Hi Chris, When using Google, A14 showed up as the latest, and I had tried that before the bug report. D'oh! I've just upgraded to A15, and I'm still seeing the problem. Here's the new dmidecode output:
Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: Dell Inc. Version: A15 Release Date: 05/19/2015 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 12288 kB Characteristics: PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) ACPI is supported USB legacy is supported Smart battery is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 4.6 After the bios install, and then booting into the 4.2.0-12 kernel, here's some of the syslog entries I'm getting: Oct 3 10:07:40 mart6985-laptop kernel: [ 119.504579] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:41 mart6985-laptop kernel: [ 120.344514] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:42 mart6985-laptop kernel: [ 121.184449] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:42 mart6985-laptop kernel: [ 122.024354] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:43 mart6985-laptop kernel: [ 122.864275] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:44 mart6985-laptop kernel: [ 123.704190] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:45 mart6985-laptop kernel: [ 124.544163] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:45 mart6985-laptop kernel: [ 124.544406] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting Oct 3 10:07:46 mart6985-laptop kernel: [ 125.374730] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:47 mart6985-laptop kernel: [ 126.214647] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:47 mart6985-laptop kernel: [ 127.054563] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:48 mart6985-laptop kernel: [ 127.894488] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549465] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549467] ------------[ cut here ]------------ Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549480] WARNING: CPU: 2 PID: 1113 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_c rtc_state+0x2c5/0x440 [i915]() Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549481] pipe state doesn't match! Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549482] Modules linked in: pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn 544_mei mei_phy pn544 hci nfc dell_wmi sparse_keymap dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp uvcvideo vid eobuf2_vmalloc videobuf2_memops kvm_intel videobuf2_core v4l2_common videodev media arc4 kvm iwlmvm mac80211 snd_soc_rt5640 snd_soc_rl6231 joydev input_leds snd_hda_c odec_hdmi serio_raw snd_soc_core snd_hda_codec_realtek snd_compress ac97_bus snd_hda_codec_generic snd_pcm_dmaengine lpc_ich snd_seq_midi snd_seq_midi_event iwlwifi s nd_rawmidi snd_hda_intel snd_hda_codec snd_hda_core snd_seq snd_hwdep cfg80211 snd_pcm mei_me mei shpchp snd_seq_device snd_timer snd 8250_fintek soundcore dw_dmac dw _dmac_core snd_soc_sst_acpi dell_smo8800 i2c_designware_platform 8250_dw i2c_designware_core dell_rbtn spi_pxa2xx_platform mac_hid nfsd auth_rpcgss nfs_acl lockd grac e parport_pc ppdev sunrpc lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni _intel i915 aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse i2c_algo_bit drm_kms_helper ahci e1000e libahci sdhci_pci drm ptp pps_core wmi sdhci_acpi v ideo sdhci i2c_hid hid Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549541] CPU: 2 PID: 1113 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549542] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A15 05/19/2015 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549543] ffffffffc02ddab0 ffff8804070bb7e8 ffffffff817b0cd5 0000000000000000 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549545] ffff8804070bb838 ffff8804070bb828 ffffffff81076536 ffff8804070bb858 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549547] ffff8804070bb8c0 ffff880406753800 0000000000000001 ffff880406753b50 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549550] Call Trace: Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549554] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549558] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549560] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549571] [<ffffffffc02704d1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549580] [<ffffffffc02708c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549594] [<ffffffffc02843de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549604] [<ffffffffc0285587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549616] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549624] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549632] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549638] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549645] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549648] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549651] [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549653] [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549655] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549657] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 3 10:07:49 mart6985-laptop kernel: [ 128.549659] ---[ end trace d065d7e48b352d23 ]--- Oct 3 10:07:49 mart6985-laptop kernel: [ 128.563376] [drm:intel_mst_enable_dp [i915]] *ERROR* Timed out waiting for ACT sent Oct 3 10:07:49 mart6985-laptop kernel: [ 128.734598] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:50 mart6985-laptop kernel: [ 129.574514] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:51 mart6985-laptop kernel: [ 130.414417] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:51 mart6985-laptop kernel: [ 130.414651] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting Oct 3 10:07:52 mart6985-laptop kernel: [ 131.241265] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:52 mart6985-laptop kernel: [ 132.081252] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:53 mart6985-laptop kernel: [ 132.921184] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:53 mart6985-laptop systemd[1]: Stopping User Manager for UID 112... Oct 3 10:07:53 mart6985-laptop systemd[1133]: Reached target Shutdown. Oct 3 10:07:53 mart6985-laptop systemd[1133]: Stopped target Default. Oct 3 10:07:53 mart6985-laptop systemd[1133]: Stopped target Basic System. Oct 3 10:07:53 mart6985-laptop systemd[1133]: Stopped target Timers. Oct 3 10:07:53 mart6985-laptop systemd[1133]: Starting Exit the Session... Oct 3 10:07:53 mart6985-laptop systemd[1133]: Stopped target Sockets. Oct 3 10:07:53 mart6985-laptop systemd[1133]: Stopped target Paths. Oct 3 10:07:53 mart6985-laptop systemd[1133]: Received SIGRTMIN+24 from PID 2564 (kill). Oct 3 10:07:53 mart6985-laptop systemd[1]: Stopped User Manager for UID 112. Oct 3 10:07:53 mart6985-laptop systemd[1]: Removed slice user-112.slice. Oct 3 10:07:54 mart6985-laptop kernel: [ 133.761191] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451851] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451853] ------------[ cut here ]------------ Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451865] WARNING: CPU: 2 PID: 1113 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451867] pipe state doesn't match! Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451868] Modules linked in: pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn544_mei mei_phy pn544 hci nfc dell_wmi sparse_keymap dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp uvcvideo videobuf2_vmalloc videobuf2_memops kvm_intel videobuf2_core v4l2_common videodev media arc4 kvm iwlmvm mac80211 snd_soc_rt5640 snd_soc_rl6231 joydev input_leds snd_hda_codec_hdmi serio_raw snd_soc_core snd_hda_codec_realtek snd_compress ac97_bus snd_hda_codec_generic snd_pcm_dmaengine lpc_ich snd_seq_midi snd_seq_midi_event iwlwifi snd_rawmidi snd_hda_intel snd_hda_codec snd_hda_core snd_seq snd_hwdep cfg80211 snd_pcm mei_me mei shpchp snd_seq_device snd_timer snd 8250_fintek soundcore dw_dmac dw_dmac_core snd_soc_sst_acpi dell_smo8800 i2c_designware_platform 8250_dw i2c_designware_core dell_rbtn spi_pxa2xx_platform mac_hid nfsd auth_rpcgss nfs_acl lockd grace parport_pc ppdev sunrpc lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel i915 aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse i2c_algo_bit drm_kms_helper ahci e1000e libahci sdhci_pci drm ptp pps_core wmi sdhci_acpi video sdhci i2c_hid hid Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451928] CPU: 2 PID: 1113 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451929] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A15 05/19/2015 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451931] ffffffffc02ddab0 ffff8804070bb7e8 ffffffff817b0cd5 0000000000000000 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451933] ffff8804070bb838 ffff8804070bb828 ffffffff81076536 ffff8804070bb858 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451935] ffff8804070bb8c0 ffff880406753800 0000000000000001 ffff880406753b50 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451937] Call Trace: Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451942] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451945] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451947] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451959] [<ffffffffc02704d1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451969] [<ffffffffc02708c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451982] [<ffffffffc02843de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.451993] [<ffffffffc0285587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452004] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452013] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452021] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452027] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452034] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452037] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452039] [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452041] [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452043] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452046] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452047] ---[ end trace d065d7e48b352d24 ]--- Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452063] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ddi_pll_sel (expected 0x00000000, found 0x20000000) Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452064] ------------[ cut here ]------------ Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452075] WARNING: CPU: 2 PID: 1113 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452075] pipe state doesn't match! Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452076] Modules linked in: pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn544_mei mei_phy pn544 hci nfc dell_wmi sparse_keymap dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp uvcvideo videobuf2_vmalloc videobuf2_memops kvm_intel videobuf2_core v4l2_common videodev media arc4 kvm iwlmvm mac80211 snd_soc_rt5640 snd_soc_rl6231 joydev input_leds snd_hda_codec_hdmi serio_raw snd_soc_core snd_hda_codec_realtek snd_compress ac97_bus snd_hda_codec_generic snd_pcm_dmaengine lpc_ich snd_seq_midi snd_seq_midi_event iwlwifi snd_rawmidi snd_hda_intel snd_hda_codec snd_hda_core snd_seq snd_hwdep cfg80211 snd_pcm mei_me mei shpchp snd_seq_device snd_timer snd 8250_fintek soundcore dw_dmac dw_dmac_core snd_soc_sst_acpi dell_smo8800 i2c_designware_platform 8250_dw i2c_designware_core dell_rbtn spi_pxa2xx_platform mac_hid nfsd auth_rpcgss nfs_acl lockd grace parport_pc ppdev sunrpc lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel i915 aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse i2c_algo_bit drm_kms_helper ahci e1000e libahci sdhci_pci drm ptp pps_core wmi sdhci_acpi video sdhci i2c_hid hid Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452120] CPU: 2 PID: 1113 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452121] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A15 05/19/2015 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452122] ffffffffc02ddab0 ffff8804070bb7e8 ffffffff817b0cd5 0000000000000000 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452124] ffff8804070bb838 ffff8804070bb828 ffffffff81076536 ffff8804070bb858 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452126] ffff8804070bb8c0 ffff880406753800 0000000000000001 ffff880406753b50 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452128] Call Trace: Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452130] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452132] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452134] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452144] [<ffffffffc0270479>] ? intel_pipe_config_compare+0xad9/0xc60 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452153] [<ffffffffc02708c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452165] [<ffffffffc02843de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452176] [<ffffffffc0285587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452184] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452192] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452200] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452206] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452213] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452216] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452218] [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452220] [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452222] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452224] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 3 10:07:55 mart6985-laptop kernel: [ 134.452226] ---[ end trace d065d7e48b352d25 ]--- Oct 3 10:08:12 mart6985-laptop kernel: [ 152.053888] pci_bus 0000:01: Allocating resources Oct 3 10:08:12 mart6985-laptop kernel: [ 152.053920] pcieport 0000:00:1c.0: bridge window [io 0x1000-0x0fff] to [bus 01] add_size 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.053928] pcieport 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 01] add_size 200000 add_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.053934] pcieport 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff] to [bus 01] add_size 200000 add_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.053953] pci_bus 0000:02: Allocating resources Oct 3 10:08:12 mart6985-laptop kernel: [ 152.054025] pcieport 0000:00:1c.3: bridge window [io 0x1000-0x0fff] to [bus 02] add_size 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.054031] pcieport 0000:00:1c.3: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 02] add_size 200000 add_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.054050] pci_bus 0000:03: Allocating resources Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055868] pcieport 0000:00:1c.4: bridge window [io 0x1000-0x0fff] to [bus 03] add_size 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055873] pcieport 0000:00:1c.4: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 03] add_size 200000 add_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055882] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055895] pcieport 0000:00:1c.0: res[14]=[mem 0x00100000-0x000fffff] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055900] pcieport 0000:00:1c.0: res[14]=[mem 0x00100000-0x002fffff] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055904] pcieport 0000:00:1c.0: res[15]=[mem 0x00100000-0x000fffff 64bit pref] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055909] pcieport 0000:00:1c.0: res[15]=[mem 0x00100000-0x002fffff 64bit pref] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055914] pcieport 0000:00:1c.3: res[15]=[mem 0x00100000-0x000fffff 64bit pref] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055919] pcieport 0000:00:1c.3: res[15]=[mem 0x00100000-0x002fffff 64bit pref] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055923] pcieport 0000:00:1c.4: res[15]=[mem 0x00100000-0x000fffff 64bit pref] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055928] pcieport 0000:00:1c.4: res[15]=[mem 0x00100000-0x002fffff 64bit pref] res_to_dev_res add_size 200000 min_align 100000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055932] pcieport 0000:00:1c.0: res[13]=[io 0x1000-0x0fff] res_to_dev_res add_size 1000 min_align 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055937] pcieport 0000:00:1c.0: res[13]=[io 0x1000-0x1fff] res_to_dev_res add_size 1000 min_align 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055941] pcieport 0000:00:1c.3: res[13]=[io 0x1000-0x0fff] res_to_dev_res add_size 1000 min_align 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055945] pcieport 0000:00:1c.3: res[13]=[io 0x1000-0x1fff] res_to_dev_res add_size 1000 min_align 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055949] pcieport 0000:00:1c.4: res[13]=[io 0x1000-0x0fff] res_to_dev_res add_size 1000 min_align 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055953] pcieport 0000:00:1c.4: res[13]=[io 0x1000-0x1fff] res_to_dev_res add_size 1000 min_align 1000 Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055966] pcieport 0000:00:1c.0: BAR 14: assigned [mem 0xdf200000-0xdf3fffff] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055981] pcieport 0000:00:1c.0: BAR 15: assigned [mem 0xdf400000-0xdf5fffff 64bit pref] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.055994] pcieport 0000:00:1c.3: BAR 15: assigned [mem 0xdf600000-0xdf7fffff 64bit pref] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.056005] pcieport 0000:00:1c.4: BAR 15: assigned [mem 0xdf800000-0xdf9fffff 64bit pref] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.056014] pcieport 0000:00:1c.0: BAR 13: assigned [io 0x2000-0x2fff] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.056020] pcieport 0000:00:1c.3: BAR 13: assigned [io 0x3000-0x3fff] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.056025] pcieport 0000:00:1c.4: BAR 13: assigned [io 0x4000-0x4fff] Oct 3 10:08:12 mart6985-laptop kernel: [ 152.058954] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.059022] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.059144] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.059713] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.059745] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.059891] acpi device:40: Cannot transition to power state D3hot for parent in (unknown) Oct 3 10:08:12 mart6985-laptop kernel: [ 152.080595] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.080849] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:12 mart6985-laptop kernel: [ 152.081732] acpi PNP0401:00: Already enumerated Oct 3 10:08:12 mart6985-laptop kernel: [ 152.082507] acpi PNP0501:00: Still not present Oct 3 10:08:16 mart6985-laptop colord-sane: io/hpmud/pp.c 627: unable to read device-id ret=-1 Oct 3 10:08:16 mart6985-laptop kernel: [ 155.877322] pci_bus 0000:01: Allocating resources Oct 3 10:08:16 mart6985-laptop kernel: [ 155.877336] pci_bus 0000:02: Allocating resources Oct 3 10:08:16 mart6985-laptop kernel: [ 155.877403] pci_bus 0000:03: Allocating resources Oct 3 10:08:16 mart6985-laptop kernel: [ 155.879239] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880598] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880634] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880690] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880879] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880891] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880938] acpi device:40: Cannot transition to power state D3hot for parent in (unknown) Oct 3 10:08:16 mart6985-laptop kernel: [ 155.880983] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop kernel: [ 155.881057] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> (eth0): link disconnected (calling deferred action) Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> (eth0): device state change: activated -> unavailable (reason 'carrier-changed') [100 20 40] Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> (eth0): canceled DHCP transaction, DHCP client pid 1328 Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> (eth0): DHCPv4 state changed bound -> done Oct 3 10:08:16 mart6985-laptop avahi-daemon[896]: Withdrawing address record for 192.168.1.14 on eth0. Oct 3 10:08:16 mart6985-laptop avahi-daemon[896]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.1.14. Oct 3 10:08:16 mart6985-laptop avahi-daemon[896]: Interface eth0.IPv4 no longer relevant for mDNS. Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> Removing DNS information from /sbin/resolvconf Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> NetworkManager state is now CONNECTED_LOCAL Oct 3 10:08:16 mart6985-laptop NetworkManager[914]: <info> NetworkManager state is now DISCONNECTED Oct 3 10:08:16 mart6985-laptop dbus[924]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' Oct 3 10:08:16 mart6985-laptop systemd[1]: Starting Network Manager Script Dispatcher Service... Oct 3 10:08:16 mart6985-laptop dbus[924]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Oct 3 10:08:16 mart6985-laptop systemd[1]: Started Network Manager Script Dispatcher Service. Oct 3 10:08:16 mart6985-laptop nm-dispatcher: Dispatching action 'down' for eth0 Oct 3 10:08:17 mart6985-laptop kernel: [ 156.896142] pci_bus 0000:01: Allocating resources Oct 3 10:08:17 mart6985-laptop kernel: [ 156.896173] pci_bus 0000:02: Allocating resources Oct 3 10:08:17 mart6985-laptop kernel: [ 156.896301] pci_bus 0000:03: Allocating resources Oct 3 10:08:17 mart6985-laptop kernel: [ 156.898155] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.905626] ACPI Error: Index value 0x0000000000000083 overflows field width 0x7 (20150619/exfldio-341) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.905640] ACPI Error: Method parse/execution failed [\NEVT] (Node ffff88040e0c7258), AE_AML_REGISTER_LIMIT (20150619/psparse-536) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.905654] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV._Q66] (Node ffff88040e0c4b90), AE_AML_REGISTER_LIMIT (20150619/psparse-536) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.907507] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.907577] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.907700] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.908224] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.908254] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.908400] acpi device:40: Cannot transition to power state D3hot for parent in (unknown) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.908542] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Oct 3 10:08:17 mart6985-laptop kernel: [ 156.908820] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment And then I have to hard reboot. These lines were especially interesting to me: Oct 3 10:08:17 mart6985-laptop kernel: [ 156.905626] ACPI Error: Index value 0x0000000000000083 overflows field width 0x7 (20150619/exfldio-341) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.905640] ACPI Error: Method parse/execution failed [\NEVT] (Node ffff88040e0c7258), AE_AML_REGISTER_LIMIT (20150619/psparse-536) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.905654] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV._Q66] (Node ffff88040e0c4b90), AE_AML_REGISTER_LIMIT (20150619/psparse-536) Oct 3 10:08:17 mart6985-laptop kernel: [ 156.908400] acpi device:40: Cannot transition to power state D3hot for parent in (unknown) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1501993 Title: drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() Status in linux package in Ubuntu: Incomplete Bug description: Hi there -- I'm seeing a kernel hang when I 'dock' my laptop into my docking station; this happens with 4.2, specifically with: linux-image-extra-4.2.0-11-generic linux-image-extra-4.2.0-12-generic Oct 1 21:38:33 mart6985-laptop kernel: [ 876.317186] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:34 mart6985-laptop kernel: [ 877.156378] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:35 mart6985-laptop kernel: [ 877.995466] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:35 mart6985-laptop kernel: [ 877.995698] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting Oct 1 21:38:36 mart6985-laptop kernel: [ 878.825806] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:37 mart6985-laptop kernel: [ 879.664854] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:38 mart6985-laptop kernel: [ 880.503908] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:38 mart6985-laptop kernel: [ 880.821042] ACPI Error: Index value 0x0000000000000083 overflows field width 0x7 (20150619/exfldio-341) Oct 1 21:38:38 mart6985-laptop kernel: [ 880.821046] ACPI Error: Method parse/execution failed [\NEVT] (Node ffff88040e0c7258), AE_AML_REGISTER_LIMIT (20150619/pspa rse-536) Oct 1 21:38:38 mart6985-laptop kernel: [ 880.821050] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV._Q66] (Node ffff88040e0c4b90), AE_AML_REGISTER_ LIMIT (20150619/psparse-536) Oct 1 21:38:38 mart6985-laptop kernel: [ 881.343010] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998373] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998374] ------------[ cut here ]------------ Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998386] WARNING: CPU: 1 PID: 1038 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_c rtc_state+0x2c5/0x440 [i915]() Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998387] pipe state doesn't match! Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998387] Modules linked in: hid_generic usbhid iptable_filter ip_tables x_tables ctr ccm rfcomm btusb btrtl btbcm btinte l pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn544_mei mei_phy pn544 arc4 hci nfc dell_wmi iwlmvm sparse_keymap mac8021 1 dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp iwlwifi uvcvideo input_leds videobuf2_vmalloc kvm_intel videobu f2_memops kvm cfg80211 joydev serio_raw videobuf2_core v4l2_common snd_hda_codec_hdmi videodev media lpc_ich snd_hda_codec_realtek snd_soc_rt5640 snd_soc_rl6231 snd_h da_codec_generic snd_soc_core shpchp snd_compress ac97_bus snd_hda_intel snd_pcm_dmaengine snd_hda_codec snd_seq_midi snd_seq_midi_event snd_hda_core snd_hwdep snd_ra wmidi mei_me snd_pcm mei snd_seq snd_seq_device snd_timer 8250_fintek snd dell_smo8800 soundcore dw_dmac snd_soc_sst_acpi dw_dmac_core 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform dell_rbtn mac_hid nfsd auth_rpcgss nfs_acl lockd parport_pc grace sunrpc ppdev lp parport autofs4 drbg ansi_cprng algif_skcip her af_alg dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper i915 ablk_helper cryptd psmouse ahci libahci i2c _algo_bit sdhci_pci drm_kms_helper e1000e drm ptp pps_core wmi sdhci_acpi video sdhci i2c_hid hid Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998438] CPU: 1 PID: 1038 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998439] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A14 02/02/2015 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998440] ffffffffc02b2ab0 ffff8800da29f7e8 ffffffff817b0cd5 0000000000000000 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998442] ffff8800da29f838 ffff8800da29f828 ffffffff81076536 ffff8800da29f858 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998443] ffff8800da29f8c0 ffff8800d9e08800 0000000000000001 ffff8800d9e08b50 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998445] Call Trace: Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998450] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998454] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998455] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998465] [<ffffffffc02454d1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998474] [<ffffffffc02458c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998485] [<ffffffffc02593de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998495] [<ffffffffc025a587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998505] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998512] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998520] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998525] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998527] [<ffffffff81265a0d>] ? sysfs_notify+0x5d/0x90 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998533] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998535] [<ffffffff810a78f9>] ? update_curr+0x119/0x150 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998539] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998541] [<ffffffff811ef785>] ? __sb_end_write+0x35/0x70 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998542] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998545] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 1 21:38:39 mart6985-laptop kernel: [ 881.998546] ---[ end trace b2fe7c20758e2f50 ]--- Oct 1 21:38:39 mart6985-laptop kernel: [ 882.067292] [drm:intel_mst_enable_dp [i915]] *ERROR* Timed out waiting for ACT sent Oct 1 21:38:39 mart6985-laptop kernel: [ 882.182123] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:40 mart6985-laptop kernel: [ 883.021220] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:41 mart6985-laptop kernel: [ 883.860292] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:41 mart6985-laptop kernel: [ 883.860524] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting Oct 1 21:38:42 mart6985-laptop kernel: [ 884.685456] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:43 mart6985-laptop kernel: [ 885.524501] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:43 mart6985-laptop kernel: [ 886.363581] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up Oct 1 21:38:44 mart6985-laptop kernel: [ 887.202640] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full retries, give up And then almost immediately after: Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903150] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903153] ------------[ cut here ]------------ Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903166] WARNING: CPU: 2 PID: 1038 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903167] pipe state doesn't match! Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903168] Modules linked in: hid_generic usbhid iptable_filter ip_tables x_tables ctr ccm rfcomm btusb btrtl btbcm btintel pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn544_mei mei_phy pn544 arc4 hci nfc dell_wmi iwlmvm sparse_keymap mac80211 dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp iwlwifi uvcvideo input_leds videobuf2_vmalloc kvm_intel videobuf2_memops kvm cfg80211 joydev serio_raw videobuf2_core v4l2_common snd_hda_codec_hdmi videodev media lpc_ich snd_hda_codec_realtek snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_generic snd_soc_core shpchp snd_compress ac97_bus snd_hda_intel snd_pcm_dmaengine snd_hda_codec snd_seq_midi snd_seq_midi_event snd_hda_core snd_hwdep snd_rawmidi mei_me snd_pcm mei snd_seq snd_seq_device snd_timer 8250_fintek snd dell_smo8800 soundcore dw_dmac snd_soc_sst_acpi dw_dmac_core 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform dell_rbtn mac_hid nfsd auth_rpcgss nfs_acl lockd parport_pc grace sunrpc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper i915 ablk_helper cryptd psmouse ahci libahci i2c_algo_bit sdhci_pci drm_kms_helper e1000e drm ptp pps_core wmi sdhci_acpi video sdhci i2c_hid hid Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903232] CPU: 2 PID: 1038 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903233] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A14 02/02/2015 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903234] ffffffffc02b2ab0 ffff8800da29f7e8 ffffffff817b0cd5 0000000000000000 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903237] ffff8800da29f838 ffff8800da29f828 ffffffff81076536 ffff8800da29f858 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903239] ffff8800da29f8c0 ffff8800d9e08800 0000000000000001 ffff8800d9e08b50 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903241] Call Trace: Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903246] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903249] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903251] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903265] [<ffffffffc02454d1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903275] [<ffffffffc02458c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903288] [<ffffffffc02593de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903299] [<ffffffffc025a587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903311] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903319] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903327] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903333] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903341] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903344] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903346] [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903348] [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903350] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903353] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903354] ---[ end trace b2fe7c20758e2f51 ]--- Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903372] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ddi_pll_sel (expected 0x00000000, found 0x20000000) Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903373] ------------[ cut here ]------------ Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903383] WARNING: CPU: 2 PID: 1038 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_c rtc_state+0x2c5/0x440 [i915]() Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903384] pipe state doesn't match! Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903385] Modules linked in: hid_generic usbhid iptable_filter ip_tables x_tables ctr ccm rfcomm btusb btrtl btbcm btintel pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn544_mei mei_phy pn544 arc4 hci nfc dell_wmi iwlmvm sparse_keymap mac80211 dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp iwlwifi uvcvideo input_leds videobuf2_vmalloc kvm_intel videobuf2_memops kvm cfg80211 joydev serio_raw videobuf2_core v4l2_common snd_hda_codec_hdmi videodev media lpc_ich snd_hda_codec_realtek snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_generic snd_soc_core shpchp snd_compress ac97_bus snd_hda_intel snd_pcm_dmaengine snd_hda_codec snd_seq_midi snd_seq_midi_event snd_hda_core snd_hwdep snd_rawmidi mei_me snd_pcm mei snd_seq snd_seq_device snd_timer 8250_fintek snd dell_smo8800 soundcore dw_dmac snd_soc_sst_acpi dw_dmac_core 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform dell_rbtn mac_hid nfsd auth_rpcgss nfs_acl lockd parport_pc grace sunrpc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper i915 ablk_helper cryptd psmouse ahci libahci i2c_algo_bit sdhci_pci drm_kms_helper e1000e drm ptp pps_core wmi sdhci_acpi video sdhci i2c_hid hid Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903438] CPU: 2 PID: 1038 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903439] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A14 02/02/2015 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903440] ffffffffc02b2ab0 ffff8800da29f7e8 ffffffff817b0cd5 0000000000000000 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903442] ffff8800da29f838 ffff8800da29f828 ffffffff81076536 ffff8800da29f858 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903444] ffff8800da29f8c0 ffff8800d9e08800 0000000000000001 ffff8800d9e08b50 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903446] Call Trace: Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903448] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903450] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903452] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903462] [<ffffffffc0245479>] ? intel_pipe_config_compare+0xad9/0xc60 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903472] [<ffffffffc02458c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903484] [<ffffffffc02593de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903494] [<ffffffffc025a587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903503] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903511] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903519] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903525] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903533] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903535] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903537] [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903539] [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903541] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903544] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903545] ---[ end trace b2fe7c20758e2f52 ]--- Oct 1 21:38:45 mart6985-laptop kernel: [ 888.180361] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Oct 1 21:38:45 mart6985-laptop kernel: [ 888.180364] ------------[ cut here ]------------ Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903373] ------------[ cut here ]------------ Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903383] WARNING: CPU: 2 PID: 1038 at /build/linux-X28llO/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_c rtc_state+0x2c5/0x440 [i915]() Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903384] pipe state doesn't match! Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903385] Modules linked in: hid_generic usbhid iptable_filter ip_tables x_tables ctr ccm rfcomm btusb btrtl btbcm btintel pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep bluetooth binfmt_misc pn544_mei mei_phy pn544 arc4 hci nfc dell_wmi iwlmvm sparse_keymap mac80211 dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp iwlwifi uvcvideo input_leds videobuf2_vmalloc kvm_intel videobuf2_memops kvm cfg80211 joydev serio_raw videobuf2_core v4l2_common snd_hda_codec_hdmi videodev media lpc_ich snd_hda_codec_realtek snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_generic snd_soc_core shpchp snd_compress ac97_bus snd_hda_intel snd_pcm_dmaengine snd_hda_codec snd_seq_midi snd_seq_midi_event snd_hda_core snd_hwdep snd_rawmidi mei_me snd_pcm mei snd_seq snd_seq_device snd_timer 8250_fintek snd dell_smo8800 soundcore dw_dmac snd_soc_sst_acpi dw_dmac_core 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform dell_rbtn mac_hid nfsd auth_rpcgss nfs_acl lockd parport_pc grace sunrpc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper i915 ablk_helper cryptd psmouse ahci libahci i2c_algo_bit sdhci_pci drm_kms_helper e1000e drm ptp pps_core wmi sdhci_acpi video sdhci i2c_hid hid Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903438] CPU: 2 PID: 1038 Comm: Xorg Tainted: G W OE 4.2.0-12-generic #14-Ubuntu Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903439] Hardware name: Dell Inc. Latitude E7440/03HFCG, BIOS A14 02/02/2015 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903440] ffffffffc02b2ab0 ffff8800da29f7e8 ffffffff817b0cd5 0000000000000000 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903442] ffff8800da29f838 ffff8800da29f828 ffffffff81076536 ffff8800da29f858 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903444] ffff8800da29f8c0 ffff8800d9e08800 0000000000000001 ffff8800d9e08b50 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903446] Call Trace: Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903448] [<ffffffff817b0cd5>] dump_stack+0x45/0x57 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903450] [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903452] [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903462] [<ffffffffc0245479>] ? intel_pipe_config_compare+0xad9/0xc60 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903472] [<ffffffffc02458c5>] check_crtc_state+0x2c5/0x440 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903484] [<ffffffffc02593de>] intel_modeset_check_state+0x20e/0x6b0 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903494] [<ffffffffc025a587>] intel_crtc_set_config+0x4c7/0x580 [i915] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903503] [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903511] [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903519] [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903525] [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903533] [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903535] [<ffffffff81200075>] do_vfs_ioctl+0x285/0x470 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903537] [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903539] [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903541] [<ffffffff812002d9>] SyS_ioctl+0x79/0x90 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903544] [<ffffffff817b7572>] entry_SYSCALL_64_fastpath+0x16/0x75 Oct 1 21:38:45 mart6985-laptop kernel: [ 887.903545] ---[ end trace b2fe7c20758e2f52 ]--- Oct 1 21:38:45 mart6985-laptop kernel: [ 888.180361] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Oct 1 21:38:45 mart6985-laptop kernel: [ 888.180364] ------------[ cut here ]------------ At this point I lose video, and can't do much else without a hard reboot back to linux-image-extra-3.19.0-30-generic. --- ApportVersion: 2.19-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: mart6985 1824 F.... pulseaudio /dev/snd/controlC0: mart6985 1824 F.... pulseaudio DistroRelease: Ubuntu 15.10 HibernationDevice: RESUME=UUID=ef25a70d-08ea-4cfb-a7a0-ab30671365cc InstallationDate: Installed on 2014-07-02 (456 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Latitude E7440 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-30-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-30-generic N/A linux-backports-modules-3.19.0-30-generic N/A linux-firmware 1.148 Tags: wily Uname: Linux 3.19.0-30-generic x86_64 UpgradeStatus: Upgraded to wily on 2015-09-29 (3 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 02/02/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A14 dmi.board.name: 03HFCG dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA14:bd02/02/2015:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn03HFCG:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. --- ApportVersion: 2.19-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: mart6985 1824 F.... pulseaudio /dev/snd/controlC0: mart6985 1824 F.... pulseaudio DistroRelease: Ubuntu 15.10 HibernationDevice: RESUME=UUID=ef25a70d-08ea-4cfb-a7a0-ab30671365cc InstallationDate: Installed on 2014-07-02 (456 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Latitude E7440 Package: linux-image-4.2.0-12-generic 4.2.0-12.14 PackageArchitecture: amd64 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-30-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-30-generic N/A linux-backports-modules-3.19.0-30-generic N/A linux-firmware 1.148 Tags: wily Uname: Linux 3.19.0-30-generic x86_64 UpgradeStatus: Upgraded to wily on 2015-09-29 (3 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 02/02/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A14 dmi.board.name: 03HFCG dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA14:bd02/02/2015:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn03HFCG:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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