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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1384342 ***
    https://bugs.launchpad.net/bugs/1384342

** This bug has been marked a duplicate of bug 1384342
   kernel messages intel_crtc_wait_for_pending_flips correlate to compiz hang

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https://bugs.launchpad.net/bugs/1441326

Title:
  Graphics freeze

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  My graphics/desktop froze randomly. Below is a kernel trace at the
  time of the hang:

  pr  7 15:35:13 timesysab kernel: [360123.223545] ------------[ cut here ]------------
  Apr  7 15:35:13 timesysab kernel: [360123.223604] WARNING: CPU: 2 PID: 1552 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]()
  Apr  7 15:35:13 timesysab kernel: [360123.223607] Modules linked in: pl2303 hid_generic hid_logitech_dj usbhid ftdi_sio hid usbserial snd_seq_dummy binfmt_misc mmc_block ses enclosure uas usb_storage ppp_mppe ppp_async crc_ccitt ctr ccm ec_sys snd_hda_codec_hdmi rfcomm bnep arc4 uvcvideo videobuf2_vmalloc videobuf2_memops snd_seq_midi snd_seq_midi_event snd_rawmidi videobuf2_core v4l2_common intel_rapl videodev x86_pkg_temp_thermal iwlmvm dm_multipath snd_hda_codec_via intel_powerclamp snd_hda_codec_generic scsi_dh coretemp mac80211 kvm_intel media kvm crct10dif_pclmul i915 crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_intel snd_hda_controller snd_hda_codec joydev serio_raw snd_hwdep snd_seq iwlwifi snd_pcm rtsx_pci_ms snd_seq_device drm_kms_helper btusb cfg80211 bluetooth drm memstick 6lowpan_iphc snd_timer lpc_ich i2c_algo_bit mei_me snd mei soundcore tpm_infineon wmi video mac_hid shpchp parport_pc ppdev lp parport btrfs xor raid6_pq rtsx_pci_sdmmc ahci psmouse r8169 libahci rtsx_pci mii dm_mirror dm_region_hash dm_log
  Apr  7 15:35:13 timesysab kernel: [360123.223709] CPU: 2 PID: 1552 Comm: Xorg Tainted: G        W I   3.16.0-33-generic #44-Ubuntu
  Apr  7 15:35:13 timesysab kernel: [360123.223712] Hardware name: System76, Inc.                   Gazelle Professional            /Gazelle Professional           , BIOS 1.03.06RS761 07/28/2014
  Apr  7 15:35:13 timesysab kernel: [360123.223715]  0000000000000009 ffff880213b57c18 ffffffff8178345b 0000000000000000
  Apr  7 15:35:13 timesysab kernel: [360123.223720]  ffff880213b57c50 ffffffff8106fedd 0000000000000000 ffff880213c50000
  Apr  7 15:35:13 timesysab kernel: [360123.223725]  ffff8800d6f68210 ffff8800d6f50000 ffff8800d6f50000 ffff880213b57c60
  Apr  7 15:35:13 timesysab kernel: [360123.223730] Call Trace:
  Apr  7 15:35:13 timesysab kernel: [360123.223741]  [<ffffffff8178345b>] dump_stack+0x45/0x56
  Apr  7 15:35:13 timesysab kernel: [360123.223750]  [<ffffffff8106fedd>] warn_slowpath_common+0x7d/0xa0
  Apr  7 15:35:13 timesysab kernel: [360123.223756]  [<ffffffff8106ffba>] warn_slowpath_null+0x1a/0x20
  Apr  7 15:35:13 timesysab kernel: [360123.223789]  [<ffffffffc08440fc>] intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]
  Apr  7 15:35:13 timesysab kernel: [360123.223798]  [<ffffffff810b9730>] ? prepare_to_wait_event+0x100/0x100
  Apr  7 15:35:13 timesysab kernel: [360123.223829]  [<ffffffffc0846bc3>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
  Apr  7 15:35:13 timesysab kernel: [360123.223836]  [<ffffffff817885db>] ? __ww_mutex_lock+0x1b/0xb0
  Apr  7 15:35:13 timesysab kernel: [360123.223865]  [<ffffffffc0847b07>] haswell_crtc_disable+0x57/0x2d0 [i915]
  Apr  7 15:35:13 timesysab kernel: [360123.223870]  [<ffffffff81789232>] ? mutex_lock+0x12/0x30
  Apr  7 15:35:13 timesysab kernel: [360123.223900]  [<ffffffffc0848537>] intel_crtc_update_dpms+0x67/0xa0 [i915]
  Apr  7 15:35:13 timesysab kernel: [360123.223931]  [<ffffffffc084cbc9>] intel_connector_dpms+0x59/0x70 [i915]
  Apr  7 15:35:13 timesysab kernel: [360123.223960]  [<ffffffffc052fe19>] drm_mode_obj_set_property_ioctl+0x399/0x3a0 [drm]
  Apr  7 15:35:13 timesysab kernel: [360123.223982]  [<ffffffffc052fe50>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
  Apr  7 15:35:13 timesysab kernel: [360123.223998]  [<ffffffffc051ea4f>] drm_ioctl+0x1df/0x680 [drm]
  Apr  7 15:35:13 timesysab kernel: [360123.224008]  [<ffffffff810a9fb8>] ? __enqueue_entity+0x78/0x80
  Apr  7 15:35:13 timesysab kernel: [360123.224016]  [<ffffffff8101e16f>] ? __switch_to_xtra+0x13f/0x170
  Apr  7 15:35:13 timesysab kernel: [360123.224024]  [<ffffffff811f5568>] do_vfs_ioctl+0x2c8/0x4a0
  Apr  7 15:35:13 timesysab kernel: [360123.224029]  [<ffffffff817860cd>] ? __schedule+0x39d/0x890
  Apr  7 15:35:13 timesysab kernel: [360123.224034]  [<ffffffff811f57c1>] SyS_ioctl+0x81/0xa0
  Apr  7 15:35:13 timesysab kernel: [360123.224040]  [<ffffffff8178b46d>] system_call_fastpath+0x1a/0x1f
  Apr  7 15:35:13 timesysab kernel: [360123.224043] ---[ end trace 17b39abdfbe62888 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-generic 3.16.0.33.34
  ProcVersionSignature: Ubuntu 3.16.0-33.44-generic 3.16.7-ckt7
  Uname: Linux 3.16.0-33-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  nodeax     2645 F.... pulseaudio
   /dev/snd/controlC0:  nodeax     2645 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr  7 15:56:45 2015
  HibernationDevice: RESUME=UUID=dfedd1c5-c595-4165-aa06-003b20f8cf19
  MachineType: System76, Inc. Gazelle Professional
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic root=UUID=fd2a1529-14bd-4e1d-bb45-13cd9cbe5651 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-33-generic N/A
   linux-backports-modules-3.16.0-33-generic  N/A
   linux-firmware                             1.138.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/28/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.03.06RS761
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Gazelle Professional
  dmi.board.vendor: System76, Inc.
  dmi.board.version: gazp9b
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: System76, Inc.
  dmi.chassis.version: gazp9b
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03.06RS761:bd07/28/2014:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp9b:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp9b:cvnSystem76,Inc.:ct9:cvrgazp9b:
  dmi.product.name: Gazelle Professional
  dmi.product.version: gazp9b
  dmi.sys.vendor: System76, Inc.

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