Thanks Christopher M. Penalver. I think the bug is already fixed in the new release.
-- 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/965914 Title: WARNING: at /build/buildd/linux-3.0.0/drivers/gpu/drm/i915/i915_drv.c:365 gen6_gt_force_wake_put+0x4b/0x50 [i915]() Status in “linux” package in Ubuntu: Incomplete Bug description: Occasionally my PC get frozen. Keyboard, mouse and all other input devices lost efficiency. In such case, I have to press the power button to shutdown my notepad. And sometimes, black stripes appear on the screen. In such case, if I restart the corresponding program, the screen returns to normal. I find the following lines from syslog. Mar 26 15:58:45 starrysky kernel: [ 198.509514] userif-2: sent link up event. Mar 26 15:58:45 starrysky kernel: [19699.876042] ------------[ cut here ]------------ Mar 26 15:58:45 starrysky kernel: [19699.876065] WARNING: at /build/buildd/linux-3.0.0/drivers/gpu/drm/i915/i915_drv.c:365 gen6_gt_force_wake_put+0x4b/0x50 [i915]() Mar 26 15:58:45 starrysky kernel: [19699.876068] Hardware name: Latitude E6220 Mar 26 15:58:45 starrysky kernel: [19699.876069] Modules linked in: bnep rfcomm vmnet vsock vmci vmmon binfmt_misc snd_hda_codec_hdmi snd_hda_codec_idt joydev wl(P) lib80211 bcma arc4 ppdev dell_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_hwdep snd_pcm dell_laptop dcdbas snd_seq_midi snd_rawmidi uvcvideo videodev v4l2_compat_ioctl32 snd_seq_midi_event snd_seq parport_pc btusb snd_timer snd_seq_device bluetooth wmi snd psmouse serio_raw soundcore snd_page_alloc brcmsmac(C) brcmutil(C) mac80211 i915 drm_kms_helper cfg80211 crc_ccitt drm mei(C) i2c_algo_bit video lp parport usbhid hid e1000e ahci libahci sdhci_pci sdhci Mar 26 15:58:45 starrysky kernel: [19699.876105] Pid: 0, comm: kworker/0:0 Tainted: P C 3.0.0-16-generic #29-Ubuntu Mar 26 15:58:45 starrysky kernel: [19699.876107] Call Trace: Mar 26 15:58:45 starrysky kernel: [19699.876108] <IRQ> [<ffffffff8105e8ff>] warn_slowpath_common+0x7f/0xc0 Mar 26 15:58:45 starrysky kernel: [19699.876124] [<ffffffffa014c840>] ? i915_vblank_swap+0x10/0x10 [i915] Mar 26 15:58:45 starrysky kernel: [19699.876128] [<ffffffff8105e95a>] warn_slowpath_null+0x1a/0x20 Mar 26 15:58:45 starrysky kernel: [19699.876134] [<ffffffffa014191b>] gen6_gt_force_wake_put+0x4b/0x50 [i915] Mar 26 15:58:45 starrysky kernel: [19699.876142] [<ffffffffa014c8c4>] i915_hangcheck_elapsed+0x84/0x3f0 [i915] Mar 26 15:58:45 starrysky kernel: [19699.876146] [<ffffffff81011673>] ? native_sched_clock+0x13/0x80 Mar 26 15:58:45 starrysky kernel: [19699.876150] [<ffffffff8107a3a0>] ? __queue_work+0x320/0x320 Mar 26 15:58:45 starrysky kernel: [19699.876157] [<ffffffffa014c840>] ? i915_vblank_swap+0x10/0x10 [i915] Mar 26 15:58:45 starrysky kernel: [19699.876164] [<ffffffffa014c840>] ? i915_vblank_swap+0x10/0x10 [i915] Mar 26 15:58:45 starrysky kernel: [19699.876168] [<ffffffff8106d736>] call_timer_fn+0x46/0x160 Mar 26 15:58:45 starrysky kernel: [19699.876172] [<ffffffff812efe4d>] ? rb_insert_color+0xad/0x150 Mar 26 15:58:45 starrysky kernel: [19699.876178] [<ffffffffa014c840>] ? i915_vblank_swap+0x10/0x10 [i915] Mar 26 15:58:45 starrysky kernel: [19699.876181] [<ffffffff8106f062>] run_timer_softirq+0x132/0x2a0 Mar 26 15:58:45 starrysky kernel: [19699.876185] [<ffffffff810270cd>] ? lapic_next_event+0x1d/0x30 Mar 26 15:58:45 starrysky kernel: [19699.876187] [<ffffffff810660f8>] __do_softirq+0xa8/0x210 Mar 26 15:58:45 starrysky kernel: [19699.876191] [<ffffffff81093a2f>] ? tick_program_event+0x1f/0x30 Mar 26 15:58:45 starrysky kernel: [19699.876195] [<ffffffff815fc41c>] call_softirq+0x1c/0x30 Mar 26 15:58:45 starrysky kernel: [19699.876197] [<ffffffff8100c2d5>] do_softirq+0x65/0xa0 Mar 26 15:58:45 starrysky kernel: [19699.876200] [<ffffffff810664de>] irq_exit+0x8e/0xb0 Mar 26 15:58:45 starrysky kernel: [19699.876203] [<ffffffff815fcd5e>] smp_apic_timer_interrupt+0x6e/0x99 Mar 26 15:58:45 starrysky kernel: [19699.876206] [<ffffffff815fbbd3>] apic_timer_interrupt+0x13/0x20 Mar 26 15:58:45 starrysky kernel: [19699.876207] <EOI> [<ffffffff8134b1bb>] ? intel_idle+0xcb/0x120 Mar 26 15:58:45 starrysky kernel: [19699.876212] [<ffffffff8134b19d>] ? intel_idle+0xad/0x120 Mar 26 15:58:45 starrysky kernel: [19699.876216] [<ffffffff814b37ad>] cpuidle_idle_call+0x9d/0x280 Mar 26 15:58:45 starrysky kernel: [19699.876219] [<ffffffff8100920b>] cpu_idle+0xab/0x100 Mar 26 15:58:45 starrysky kernel: [19699.876223] [<ffffffff815d52a9>] start_secondary+0xd9/0xdb Mar 26 15:58:45 starrysky kernel: [19699.876226] ---[ end trace 4b9bd915fdd3007b ]--- ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-16-generic 3.0.0-16.29 ProcVersionSignature: Ubuntu 3.0.0-16.29-generic 3.0.20 Uname: Linux 3.0.0-16-generic x86_64 NonfreeKernelModules: wl AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: starrysky 3955 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0x7ec60000 irq 43' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:111d76e7,102804a9,00100102 HDA:80862805,80860101,00100000' Controls : 27 Simple ctrls : 13 Date: Tue Mar 27 12:40:40 2012 HibernationDevice: RESUME=UUID=03e147a2-b549-4217-a0c1-bbd356996e3c InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: Dell Inc. Latitude E6220 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-16-generic root=UUID=eb7bdc15-0fb4-45ac-ae19-d20d539e46a1 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.0.0-16-generic N/A linux-backports-modules-3.0.0-16-generic N/A linux-firmware 1.60 SourcePackage: linux StagingDrivers: brcmutil mei brcmsmac UpgradeStatus: Upgraded to oneiric on 2011-12-13 (104 days ago) WifiSyslog: dmi.bios.date: 10/18/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A04 dmi.board.name: 0JX04H dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA04:bd10/18/2011:svnDellInc.:pnLatitudeE6220:pvr01:rvnDellInc.:rn0JX04H:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6220 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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