It occurs in approx every 2 minutes when the laptop is operating on battery. When plugged in, it happens much less frequently (3 times so far in an hour).
-- 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/1413127 Title: WARNING: CPU: 3 PID: 2121 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_uncore.c:47 assert_device_not_suspended.isra.8+0x43/0x50 [i915]() Status in linux package in Ubuntu: Incomplete Status in linux package in Fedora: Unknown Bug description: I got the following warning in the kernel log: [82452.464382] ------------[ cut here ]------------ [82452.464501] WARNING: CPU: 3 PID: 2121 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_uncore.c:47 assert_device_not_suspended.isra.8+0x43/0x50 [i915]() [82452.464505] Device suspended [82452.464508] Modules linked in: msr nls_utf8 ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c cpuid ctr ccm dm_crypt btusb dell_wmi sparse_keymap dell_laptop dcdbas arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwlmvm mac80211 joydev serio_raw rfcomm bnep bluetooth iwlwifi snd_hda_codec_hdmi snd_hda_codec_idt 6lowpan_iphc snd_hda_codec_generic cfg80211 lpc_ich snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq dell_smo8800 snd_seq_device snd_timer mei_me binfmt_misc snd mei shpchp soundcore mac_hid parport_pc ppdev tpm_rng lp parport btrfs xor raid6_pq hid_generic usbhid hid i915 [82452.464658] psmouse ahci sdhci_pci sdhci i2c_algo_bit libahci drm_kms_helper e1000e firewire_ohci drm firewire_core ptp crc_itu_t pps_core wmi video [82452.464699] CPU: 3 PID: 2121 Comm: Xorg Not tainted 3.16.0-30-generic #40-Ubuntu [82452.464703] Hardware name: Dell Inc. Latitude E6520/0NVF5K, BIOS A19 11/14/2013 [82452.464707] 0000000000000009 ffff880220323a48 ffffffff8178236b ffff880220323a90 [82452.464726] ffff880220323a80 ffffffff8106feed ffff88021dd60000 00000000000e1180 [82452.464733] ffff880221ebb000 ffff88021dd60080 0000000000000001 ffff880220323ae0 [82452.464740] Call Trace: [82452.464767] [<ffffffff8178236b>] dump_stack+0x45/0x56 [82452.464777] [<ffffffff8106feed>] warn_slowpath_common+0x7d/0xa0 [82452.464785] [<ffffffff8106ff5c>] warn_slowpath_fmt+0x4c/0x50 [82452.464809] [<ffffffff81292f6b>] ? __ext4_handle_dirty_metadata+0x8b/0x200 [82452.464862] [<ffffffffc02dac13>] assert_device_not_suspended.isra.8+0x43/0x50 [i915] [82452.464924] [<ffffffffc02dc495>] gen6_read32+0x35/0x110 [i915] [82452.464985] [<ffffffffc0319200>] intel_lvds_compute_config+0x60/0x170 [i915] [82452.465053] [<ffffffffc02f2804>] intel_modeset_pipe_config+0x2a4/0xbd0 [i915] [82452.465063] [<ffffffff812ac510>] ? jbd2_journal_stop+0x1b0/0x380 [82452.465130] [<ffffffffc02f3995>] __intel_set_mode+0x865/0xab0 [i915] [82452.465142] [<ffffffff8139cc99>] ? idr_get_empty_slot+0x1a9/0x3d0 [82452.465210] [<ffffffffc02f6b36>] intel_set_mode+0x16/0x30 [i915] [82452.465265] [<ffffffffc02f7bfa>] intel_crtc_set_config+0xa4a/0xda0 [i915] [82452.465312] [<ffffffffc01946d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [82452.465367] [<ffffffffc0198413>] drm_mode_setcrtc+0x283/0x580 [drm] [82452.465391] [<ffffffffc0188a4f>] drm_ioctl+0x1df/0x680 [drm] [82452.465417] [<ffffffff811f51f8>] do_vfs_ioctl+0x2c8/0x4a0 [82452.465424] [<ffffffff811e36f1>] ? __sb_end_write+0x31/0x60 [82452.465445] [<ffffffff811e1262>] ? vfs_write+0x1b2/0x1f0 [82452.465451] [<ffffffff811f5451>] SyS_ioctl+0x81/0xa0 [82452.465461] [<ffffffff8178a3ad>] system_call_fastpath+0x1a/0x1f [82452.465466] ---[ end trace 8bf278fa292e793e ]--- [82453.729524] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [83236.362037] ------------[ cut here ]------------ [83236.362169] WARNING: CPU: 1 PID: 2121 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_uncore.c:47 assert_device_not_suspended.isra.8+0x43/0x50 [i915]() [83236.362176] Device suspended [83236.362180] Modules linked in: msr nls_utf8 ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c cpuid ctr ccm dm_crypt btusb dell_wmi sparse_keymap dell_laptop dcdbas arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwlmvm mac80211 joydev serio_raw rfcomm bnep bluetooth iwlwifi snd_hda_codec_hdmi snd_hda_codec_idt 6lowpan_iphc snd_hda_codec_generic cfg80211 lpc_ich snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq dell_smo8800 snd_seq_device snd_timer mei_me binfmt_misc snd mei shpchp soundcore mac_hid parport_pc ppdev tpm_rng lp parport btrfs xor raid6_pq hid_generic usbhid hid i915 [83236.362396] psmouse ahci sdhci_pci sdhci i2c_algo_bit libahci drm_kms_helper e1000e firewire_ohci drm firewire_core ptp crc_itu_t pps_core wmi video [83236.362443] CPU: 1 PID: 2121 Comm: Xorg Tainted: G W 3.16.0-30-generic #40-Ubuntu [83236.362447] Hardware name: Dell Inc. Latitude E6520/0NVF5K, BIOS A19 11/14/2013 [83236.362452] 0000000000000009 ffff880220323a48 ffffffff8178236b ffff880220323a90 [83236.362459] ffff880220323a80 ffffffff8106feed ffff88021dd60000 00000000000e1180 [83236.362477] ffff880221ebb000 ffff88021dd60080 0000000000000001 ffff880220323ae0 [83236.362484] Call Trace: [83236.362500] [<ffffffff8178236b>] dump_stack+0x45/0x56 [83236.362522] [<ffffffff8106feed>] warn_slowpath_common+0x7d/0xa0 [83236.362529] [<ffffffff8106ff5c>] warn_slowpath_fmt+0x4c/0x50 [83236.362555] [<ffffffff81292f6b>] ? __ext4_handle_dirty_metadata+0x8b/0x200 [83236.362609] [<ffffffffc02dac13>] assert_device_not_suspended.isra.8+0x43/0x50 [i915] [83236.362726] [<ffffffffc02dc495>] gen6_read32+0x35/0x110 [i915] [83236.362823] [<ffffffffc0319200>] intel_lvds_compute_config+0x60/0x170 [i915] [83236.362919] [<ffffffffc02f2804>] intel_modeset_pipe_config+0x2a4/0xbd0 [i915] [83236.362929] [<ffffffff812ac510>] ? jbd2_journal_stop+0x1b0/0x380 [83236.362995] [<ffffffffc02f3995>] __intel_set_mode+0x865/0xab0 [i915] [83236.363006] [<ffffffff8139cc99>] ? idr_get_empty_slot+0x1a9/0x3d0 [83236.363062] [<ffffffffc02f6b36>] intel_set_mode+0x16/0x30 [i915] [83236.363144] [<ffffffffc02f7bfa>] intel_crtc_set_config+0xa4a/0xda0 [i915] [83236.363213] [<ffffffffc01946d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [83236.363257] [<ffffffffc0198413>] drm_mode_setcrtc+0x283/0x580 [drm] [83236.363295] [<ffffffffc0188a4f>] drm_ioctl+0x1df/0x680 [drm] [83236.363325] [<ffffffff811f51f8>] do_vfs_ioctl+0x2c8/0x4a0 [83236.363337] [<ffffffff811e36f1>] ? __sb_end_write+0x31/0x60 [83236.363361] [<ffffffff811e1262>] ? vfs_write+0x1b2/0x1f0 [83236.363371] [<ffffffff811f5451>] SyS_ioctl+0x81/0xa0 [83236.363381] [<ffffffff8178a3ad>] system_call_fastpath+0x1a/0x1f [83236.363398] ---[ end trace 8bf278fa292e793f ]--- ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-30-generic 3.16.0-30.40 ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3 Uname: Linux 3.16.0-30-generic x86_64 ApportVersion: 2.14.7-0ubuntu8.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bonnaudl 3551 F.... pulseaudio CurrentDesktop: KDE Date: Wed Jan 21 10:27:54 2015 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=cf81afe7-8427-45fa-9149-c11d060a5a26 MachineType: Dell Inc. Latitude E6520 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic root=UUID=749a9901-bdd3-4b5f-b80e-69414667e058 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-30-generic N/A linux-backports-modules-3.16.0-30-generic N/A linux-firmware 1.138.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: Jan 21 10:21:11 vougeot kernel: [138213.083690] audit: type=1400 audit(1421832071.548:47): apparmor="DENIED" operation="exec" profile="/usr/bin/evince" name="/usr/local/firefox-beta-64/firefox" pid=12914 comm="evince" requested_mask="x" denied_mask="x" fsuid=1000 ouid=1000 dmi.bios.date: 11/14/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A19 dmi.board.name: 0NVF5K dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA19:bd11/14/2013:svnDellInc.:pnLatitudeE6520:pvr01:rvnDellInc.:rn0NVF5K:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6520 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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