The bug appeared after upgrade from Ubuntu 15.04 to 15.10 or possibly after some refular update after that.
I have now upgraded to the lates BIOS (A16) but the problem remains. Should I re-run something to report potentially updated files? Below are the (this time two) "cut here" sections. Kind regards, Patrik [ 3.853328] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) [ 3.853331] ------------[ cut here ]------------ [ 3.853343] WARNING: CPU: 0 PID: 343 at /build/linux-jJX2Dm/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() [ 3.853344] pipe state doesn't match! [ 3.853345] Modules linked in: bnep binfmt_misc arc4 pn544_mei mei_phy pn544 hci dell_laptop dcdbas nfc dell_smm_hwmon dell_wmi sparse_keymap intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp btusb kvm_intel btrtl btbcm btintel kvm bluetooth uvcvideo videobuf2_vmalloc crct10dif_pclmul videobuf2_memops crc32_pclmul videobuf2_core ghash_clmulni_intel v4l2_common cdc_mbim videodev cdc_wdm cdc_ncm media iwlmvm qcserial usbnet usb_wwan mii usbserial mac80211 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel input_leds serio_raw snd_hda_codec iwlwifi snd_hda_core snd_hwdep lpc_ich cfg80211 snd_soc_rt5640 snd_soc_rl6231 snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine mei_me snd_pcm shpchp [ 3.853376] mei snd_seq_midi joydev snd_seq_midi_event snd_rawmidi 8250_fintek snd_seq dell_smo8800 snd_seq_device snd_timer dw_dmac dw_dmac_core snd_soc_sst_acpi snd soundcore dell_rbtn 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform mac_hid parport_pc ppdev lp parport autofs4 uas usb_storage i915 psmouse i2c_algo_bit sdhci_pci ahci drm_kms_helper e1000e libahci drm ptp pps_core wmi sdhci_acpi sdhci video i2c_hid hid [ 3.853398] CPU: 0 PID: 343 Comm: plymouthd Not tainted 4.2.0-18-generic #22-Ubuntu [ 3.853399] Hardware name: Dell Inc. Latitude E7440/07F3F4, BIOS A16 09/01/2015 [ 3.853400] 0000000000000000 000000008b6d1e83 ffff8804096337c8 ffffffff817e8c09 [ 3.853402] 0000000000000000 ffff880409633820 ffff880409633808 ffffffff8107b3c6 [ 3.853403] ffff880409633848 ffff8804096338b0 ffff8800d9fe8000 0000000000000001 [ 3.853405] Call Trace: [ 3.853409] [<ffffffff817e8c09>] dump_stack+0x45/0x57 [ 3.853413] [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0 [ 3.853415] [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70 [ 3.853426] [<ffffffffc0225bc1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] [ 3.853435] [<ffffffffc0225fb5>] check_crtc_state+0x2c5/0x440 [i915] [ 3.853449] [<ffffffffc0239d6d>] intel_modeset_check_state+0x21d/0x6d0 [i915] [ 3.853508] [<ffffffffc023af27>] intel_crtc_set_config+0x4c7/0x580 [i915] [ 3.853519] [<ffffffffc008bee5>] ? drm_mode_create+0x25/0x60 [drm] [ 3.853526] [<ffffffffc00854c6>] drm_mode_set_config_internal+0x66/0x100 [drm] [ 3.853533] [<ffffffffc0089b29>] drm_mode_setcrtc+0x3e9/0x500 [drm] [ 3.853538] [<ffffffffc007a495>] drm_ioctl+0x125/0x610 [drm] [ 3.853545] [<ffffffffc0089740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [ 3.853548] [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480 [ 3.853550] [<ffffffff81210b09>] SyS_ioctl+0x79/0x90 [ 3.853552] [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75 [ 3.853553] ---[ end trace 95944ca887982c2f ]--- [ 3.856181] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) [ 3.856183] ------------[ cut here ]------------ [ 3.856192] WARNING: CPU: 0 PID: 343 at /build/linux-jJX2Dm/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() [ 3.856192] pipe state doesn't match! [ 3.856193] Modules linked in: bnep binfmt_misc arc4 pn544_mei mei_phy pn544 hci dell_laptop dcdbas nfc dell_smm_hwmon dell_wmi sparse_keymap intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp btusb kvm_intel btrtl btbcm btintel kvm bluetooth uvcvideo videobuf2_vmalloc crct10dif_pclmul videobuf2_memops crc32_pclmul videobuf2_core ghash_clmulni_intel v4l2_common cdc_mbim videodev cdc_wdm cdc_ncm media iwlmvm qcserial usbnet usb_wwan mii usbserial mac80211 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel input_leds serio_raw snd_hda_codec iwlwifi snd_hda_core snd_hwdep lpc_ich cfg80211 snd_soc_rt5640 snd_soc_rl6231 snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine mei_me snd_pcm shpchp [ 3.856219] mei snd_seq_midi joydev snd_seq_midi_event snd_rawmidi 8250_fintek snd_seq dell_smo8800 snd_seq_device snd_timer dw_dmac dw_dmac_core snd_soc_sst_acpi snd soundcore dell_rbtn 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform mac_hid parport_pc ppdev lp parport autofs4 uas usb_storage i915 psmouse i2c_algo_bit sdhci_pci ahci drm_kms_helper e1000e libahci drm ptp pps_core wmi sdhci_acpi sdhci video i2c_hid hid [ 3.856236] CPU: 0 PID: 343 Comm: plymouthd Tainted: G W 4.2.0-18-generic #22-Ubuntu [ 3.856237] Hardware name: Dell Inc. Latitude E7440/07F3F4, BIOS A16 09/01/2015 [ 3.856237] 0000000000000000 000000008b6d1e83 ffff8804096337c8 ffffffff817e8c09 [ 3.856239] 0000000000000000 ffff880409633820 ffff880409633808 ffffffff8107b3c6 [ 3.856240] ffff880409633848 ffff8804096338b0 ffff8800d9fe8000 0000000000000001 [ 3.856242] Call Trace: [ 3.856244] [<ffffffff817e8c09>] dump_stack+0x45/0x57 [ 3.856248] [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0 [ 3.856249] [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70 [ 3.856257] [<ffffffffc0225bc1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] [ 3.856264] [<ffffffffc0225fb5>] check_crtc_state+0x2c5/0x440 [i915] [ 3.856274] [<ffffffffc0239d6d>] intel_modeset_check_state+0x21d/0x6d0 [i915] [ 3.856282] [<ffffffffc023af27>] intel_crtc_set_config+0x4c7/0x580 [i915] [ 3.856290] [<ffffffffc008bee5>] ? drm_mode_create+0x25/0x60 [drm] [ 3.856296] [<ffffffffc00854c6>] drm_mode_set_config_internal+0x66/0x100 [drm] [ 3.856302] [<ffffffffc0089b29>] drm_mode_setcrtc+0x3e9/0x500 [drm] [ 3.856306] [<ffffffffc007a495>] drm_ioctl+0x125/0x610 [drm] [ 3.856312] [<ffffffffc0089740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [ 3.856314] [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480 [ 3.856316] [<ffffffff81210b09>] SyS_ioctl+0x79/0x90 [ 3.856318] [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75 [ 3.856319] ---[ end trace 95944ca887982c30 ]--- [ 3.860245] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 3.933412] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 4.087004] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) [ 4.087008] ------------[ cut here ]------------ [ 4.087019] WARNING: CPU: 2 PID: 934 at /build/linux-jJX2Dm/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() [ 4.087020] pipe state doesn't match! [ 4.087021] Modules linked in: bnep binfmt_misc arc4 pn544_mei mei_phy pn544 hci dell_laptop dcdbas nfc dell_smm_hwmon dell_wmi sparse_keymap intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp btusb kvm_intel btrtl btbcm btintel kvm bluetooth uvcvideo videobuf2_vmalloc crct10dif_pclmul videobuf2_memops crc32_pclmul videobuf2_core ghash_clmulni_intel v4l2_common cdc_mbim videodev cdc_wdm cdc_ncm media iwlmvm qcserial usbnet usb_wwan mii usbserial mac80211 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel input_leds serio_raw snd_hda_codec iwlwifi snd_hda_core snd_hwdep lpc_ich cfg80211 snd_soc_rt5640 snd_soc_rl6231 snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine mei_me snd_pcm shpchp [ 4.087052] mei snd_seq_midi joydev snd_seq_midi_event snd_rawmidi 8250_fintek snd_seq dell_smo8800 snd_seq_device snd_timer dw_dmac dw_dmac_core snd_soc_sst_acpi snd soundcore dell_rbtn 8250_dw i2c_designware_platform i2c_designware_core spi_pxa2xx_platform mac_hid parport_pc ppdev lp parport autofs4 uas usb_storage i915 psmouse i2c_algo_bit sdhci_pci ahci drm_kms_helper e1000e libahci drm ptp pps_core wmi sdhci_acpi sdhci video i2c_hid hid [ 4.087072] CPU: 2 PID: 934 Comm: Xorg Tainted: G W 4.2.0-18-generic #22-Ubuntu [ 4.087073] Hardware name: Dell Inc. Latitude E7440/07F3F4, BIOS A16 09/01/2015 [ 4.087075] 0000000000000000 00000000fdec4985 ffff88040963b7c8 ffffffff817e8c09 [ 4.087077] 0000000000000000 ffff88040963b820 ffff88040963b808 ffffffff8107b3c6 [ 4.087078] ffff88040963b848 ffff88040963b8b0 ffff8800d9fe8000 0000000000000001 [ 4.087080] Call Trace: [ 4.087084] [<ffffffff817e8c09>] dump_stack+0x45/0x57 [ 4.087088] [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0 [ 4.087090] [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70 [ 4.087100] [<ffffffffc0225bc1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] [ 4.087108] [<ffffffffc0225fb5>] check_crtc_state+0x2c5/0x440 [i915] [ 4.087120] [<ffffffffc0239d6d>] intel_modeset_check_state+0x21d/0x6d0 [i915] [ 4.087130] [<ffffffffc023af27>] intel_crtc_set_config+0x4c7/0x580 [i915] [ 4.087140] [<ffffffffc008bee5>] ? drm_mode_create+0x25/0x60 [drm] [ 4.087148] [<ffffffffc00854c6>] drm_mode_set_config_internal+0x66/0x100 [drm] [ 4.087155] [<ffffffffc0089b29>] drm_mode_setcrtc+0x3e9/0x500 [drm] [ 4.087160] [<ffffffffc007a495>] drm_ioctl+0x125/0x610 [drm] [ 4.087167] [<ffffffffc0089740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [ 4.087170] [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480 [ 4.087172] [<ffffffff81087f61>] ? __set_task_blocked+0x41/0xa0 [ 4.087174] [<ffffffff81210b09>] SyS_ioctl+0x79/0x90 [ 4.087176] [<ffffffff8108ab8e>] ? SyS_rt_sigprocmask+0x8e/0xc0 [ 4.087179] [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75 [ 4.087180] ---[ end trace 95944ca887982c31 ]--- [ On 6 November 2015 at 00:04, Joseph Salisbury < joseph.salisb...@canonical.com> wrote: > Did this issue start happening after an update/upgrade? Was there a > prior kernel version where you were not having this particular problem? > > Would it be possible for you to test the latest upstream kernel? Refer > to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest > v4.3 kernel[0]. > > If this bug is fixed in the mainline kernel, please add the following > tag 'kernel-fixed-upstream'. > > If the mainline kernel does not fix this bug, please add the tag: > 'kernel-bug-exists-upstream'. > > Once testing of the upstream kernel is complete, please mark this bug as > "Confirmed". > > > Thanks in advance. > > [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3-unstable/ > > ** Changed in: linux (Ubuntu) > Importance: Undecided => Medium > > ** Changed in: linux (Ubuntu) > Status: Confirmed => Incomplete > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1513648 > > Title: > [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled > (expected 1, found 0) > > Status in linux package in Ubuntu: > Incomplete > > Bug description: > A few seconds after boot I get this message in the log (and wifi does > not activate). > > Many things still work, but the system acts a bit confused. Sometimes > it gets almost unsusable until reboot (and then there are more of > those "cut here" sections in the log). > > Kind regards, > Patrik > > > [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled > (expected 1, found 0) > ------------[ cut here ]------------ > [ 6.549187] WARNING: CPU: 2 PID: 1048 at > /build/linux-AxjFAn/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 > check_crtc_state+0x2c5/0x440 [i915]() > [ 6.549188] pipe state doesn't match! > [ 6.549189] Modules linked in: iptable_filter ip_tables x_tables > pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc > bnep pn544_mei mei_phy pn544 hci nfc arc4 dell_wmi joydev btusb btrtl btbcm > sparse_keymap btintel bluetooth dell_laptop dcdbas dell_smm_hwmon uvcvideo > videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev > media intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp > kvm_intel kvm snd_soc_rt5640 iwlmvm snd_soc_rl6231 mac80211 snd_soc_core > snd_compress snd_hda_codec_hdmi crct10dif_pclmul ac97_bus crc32_pclmul > snd_pcm_dmaengine ghash_clmulni_intel snd_hda_codec_realtek > snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep > aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwlwifi > snd_pcm input_leds serio_raw > [ 6.549234] cfg80211 lpc_ich snd_seq_midi snd_seq_midi_event shpchp > mei_me mei snd_rawmidi snd_seq snd_seq_device snd_timer snd 8250_fintek > soundcore dw_dmac dw_dmac_core dell_smo8800 snd_soc_sst_acpi 8250_dw > dell_rbtn i2c_designware_platform i2c_designware_core spi_pxa2xx_platform > mac_hid cdc_mbim qcserial cdc_wdm cdc_ncm usb_wwan usbnet mii usbserial > parport_pc ppdev lp parport autofs4 uas usb_storage i915 i2c_algo_bit > psmouse drm_kms_helper e1000e drm ahci libahci ptp sdhci_pci pps_core wmi > sdhci_acpi video sdhci i2c_hid hid > [ 6.549269] CPU: 2 PID: 1048 Comm: Xorg Tainted: G W OE > 4.2.0-16-generic #19-Ubuntu > [ 6.549270] Hardware name: Dell Inc. Latitude E7440/07F3F4, BIOS A09 > 05/01/2014 > [ 6.549272] 0000000000000000 000000002ecf7f35 ffff880409e337c8 > ffffffff817e8c09 > [ 6.549275] 0000000000000000 ffff880409e33820 ffff880409e33808 > ffffffff8107b3c6 > [ 6.549278] ffff880409e33848 ffff880409e338b0 ffff8804072d6800 > 0000000000000001 > [ 6.549280] Call Trace: > [ 6.549286] [<ffffffff817e8c09>] dump_stack+0x45/0x57 > [ 6.549291] [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0 > [ 6.549293] [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70 > [ 6.549308] [<ffffffffc0225bc1>] ? > intel_pipe_config_compare+0xb31/0xc60 [i915] > [ 6.549320] [<ffffffffc0225fb5>] check_crtc_state+0x2c5/0x440 [i915] > [ 6.549336] [<ffffffffc0239d6d>] > intel_modeset_check_state+0x21d/0x6d0 [i915] > [ 6.549350] [<ffffffffc023af27>] intel_crtc_set_config+0x4c7/0x580 > [i915] > [ 6.549364] [<ffffffffc00b6ee5>] ? drm_mode_create+0x25/0x60 [drm] > [ 6.549374] [<ffffffffc00b04c6>] > drm_mode_set_config_internal+0x66/0x100 [drm] > [ 6.549384] [<ffffffffc00b4b29>] drm_mode_setcrtc+0x3e9/0x500 [drm] > [ 6.549392] [<ffffffffc00a5495>] drm_ioctl+0x125/0x610 [drm] > [ 6.549400] [<ffffffffc00b4740>] ? drm_mode_setplane+0x1b0/0x1b0 > [drm] > [ 6.549404] [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480 > [ 6.549407] [<ffffffff81087f61>] ? __set_task_blocked+0x41/0xa0 > [ 6.549410] [<ffffffff81210b09>] SyS_ioctl+0x79/0x90 > [ 6.549413] [<ffffffff8108ab8e>] ? SyS_rt_sigprocmask+0x8e/0xc0 > [ 6.549416] [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75 > [ 6.549418] ---[ end trace 5a9f3f63db8e3888 ]--- > > ProblemType: Bug > DistroRelease: Ubuntu 15.10 > Package: linux-image-4.2.0-16-generic 4.2.0-16.19 > ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 > Uname: Linux 4.2.0-16-generic x86_64 > ApportVersion: 2.19.1-0ubuntu4 > Architecture: amd64 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: patrikj 1724 F.... pulseaudio > /dev/snd/controlC1: patrikj 1724 F.... pulseaudio > CurrentDesktop: Unity > Date: Thu Nov 5 23:43:28 2015 > HibernationDevice: RESUME=UUID=2c948eae-cab3-47b5-a293-ceefec2af360 > InstallationDate: Installed on 2014-10-14 (387 days ago) > InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 > (20140722.2) > MachineType: Dell Inc. Latitude E7440 > ProcFB: 0 inteldrmfb > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic > root=UUID=a8c1bdf4-4a10-4923-be0e-03d7148a6b88 ro quiet splash vt.handoff=7 > RelatedPackageVersions: > linux-restricted-modules-4.2.0-16-generic N/A > linux-backports-modules-4.2.0-16-generic N/A > linux-firmware 1.149 > SourcePackage: linux > UpgradeStatus: No upgrade log present (probably fresh install) > dmi.bios.date: 05/01/2014 > dmi.bios.vendor: Dell Inc. > dmi.bios.version: A09 > dmi.board.name: 07F3F4 > dmi.board.vendor: Dell Inc. > dmi.board.version: A00 > dmi.chassis.type: 9 > dmi.chassis.vendor: Dell Inc. > dmi.modalias: > dmi:bvnDellInc.:bvrA09:bd05/01/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr: > dmi.product.name: Latitude E7440 > dmi.product.version: 01 > dmi.sys.vendor: Dell Inc. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1513648/+subscriptions > -- 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/1513648 Title: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Status in linux package in Ubuntu: Incomplete Bug description: A few seconds after boot I get this message in the log (and wifi does not activate). Many things still work, but the system acts a bit confused. Sometimes it gets almost unsusable until reboot (and then there are more of those "cut here" sections in the log). Kind regards, Patrik [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) ------------[ cut here ]------------ [ 6.549187] WARNING: CPU: 2 PID: 1048 at /build/linux-AxjFAn/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]() [ 6.549188] pipe state doesn't match! [ 6.549189] Modules linked in: iptable_filter ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc bnep pn544_mei mei_phy pn544 hci nfc arc4 dell_wmi joydev btusb btrtl btbcm sparse_keymap btintel bluetooth dell_laptop dcdbas dell_smm_hwmon uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_soc_rt5640 iwlmvm snd_soc_rl6231 mac80211 snd_soc_core snd_compress snd_hda_codec_hdmi crct10dif_pclmul ac97_bus crc32_pclmul snd_pcm_dmaengine ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwlwifi snd_pcm input_leds serio_raw [ 6.549234] cfg80211 lpc_ich snd_seq_midi snd_seq_midi_event shpchp mei_me mei snd_rawmidi snd_seq snd_seq_device snd_timer snd 8250_fintek soundcore dw_dmac dw_dmac_core dell_smo8800 snd_soc_sst_acpi 8250_dw dell_rbtn i2c_designware_platform i2c_designware_core spi_pxa2xx_platform mac_hid cdc_mbim qcserial cdc_wdm cdc_ncm usb_wwan usbnet mii usbserial parport_pc ppdev lp parport autofs4 uas usb_storage i915 i2c_algo_bit psmouse drm_kms_helper e1000e drm ahci libahci ptp sdhci_pci pps_core wmi sdhci_acpi video sdhci i2c_hid hid [ 6.549269] CPU: 2 PID: 1048 Comm: Xorg Tainted: G W OE 4.2.0-16-generic #19-Ubuntu [ 6.549270] Hardware name: Dell Inc. Latitude E7440/07F3F4, BIOS A09 05/01/2014 [ 6.549272] 0000000000000000 000000002ecf7f35 ffff880409e337c8 ffffffff817e8c09 [ 6.549275] 0000000000000000 ffff880409e33820 ffff880409e33808 ffffffff8107b3c6 [ 6.549278] ffff880409e33848 ffff880409e338b0 ffff8804072d6800 0000000000000001 [ 6.549280] Call Trace: [ 6.549286] [<ffffffff817e8c09>] dump_stack+0x45/0x57 [ 6.549291] [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0 [ 6.549293] [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70 [ 6.549308] [<ffffffffc0225bc1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915] [ 6.549320] [<ffffffffc0225fb5>] check_crtc_state+0x2c5/0x440 [i915] [ 6.549336] [<ffffffffc0239d6d>] intel_modeset_check_state+0x21d/0x6d0 [i915] [ 6.549350] [<ffffffffc023af27>] intel_crtc_set_config+0x4c7/0x580 [i915] [ 6.549364] [<ffffffffc00b6ee5>] ? drm_mode_create+0x25/0x60 [drm] [ 6.549374] [<ffffffffc00b04c6>] drm_mode_set_config_internal+0x66/0x100 [drm] [ 6.549384] [<ffffffffc00b4b29>] drm_mode_setcrtc+0x3e9/0x500 [drm] [ 6.549392] [<ffffffffc00a5495>] drm_ioctl+0x125/0x610 [drm] [ 6.549400] [<ffffffffc00b4740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [ 6.549404] [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480 [ 6.549407] [<ffffffff81087f61>] ? __set_task_blocked+0x41/0xa0 [ 6.549410] [<ffffffff81210b09>] SyS_ioctl+0x79/0x90 [ 6.549413] [<ffffffff8108ab8e>] ? SyS_rt_sigprocmask+0x8e/0xc0 [ 6.549416] [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75 [ 6.549418] ---[ end trace 5a9f3f63db8e3888 ]--- ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-16-generic 4.2.0-16.19 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: patrikj 1724 F.... pulseaudio /dev/snd/controlC1: patrikj 1724 F.... pulseaudio CurrentDesktop: Unity Date: Thu Nov 5 23:43:28 2015 HibernationDevice: RESUME=UUID=2c948eae-cab3-47b5-a293-ceefec2af360 InstallationDate: Installed on 2014-10-14 (387 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. Latitude E7440 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=a8c1bdf4-4a10-4923-be0e-03d7148a6b88 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-16-generic N/A linux-backports-modules-4.2.0-16-generic N/A linux-firmware 1.149 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/01/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 07F3F4 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/01/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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