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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1402800

Title:
  Unity hangs once every 1-2 weeks

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Every 1-2 weeks, the gui of my machine hangs.
  I can still get into a terminal through Ctrl-Alt-F2, top shows no abnormal activity.
  Kernel trace included.

  
  Dec 15 17:20:13 behemoth kernel: [61698.273305] ------------[ cut here ]------------
  Dec 15 17:20:13 behemoth kernel: [61698.273376] WARNING: CPU: 1 PID: 1819 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]()
  Dec 15 17:20:13 behemoth kernel: [61698.273380] Modules linked in: joydev wacom bridge stp llc pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ip6table_filter ip6_tables ipt_REJECT xt_conntrack iptable_filter ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_CHECKSUM xt_tcpudp iptable_mangle ip_tables x_tables snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic wl(POE) intel_rapl x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm eeepc_wmi asus_wmi sparse_keymap crct10dif_pclmul mxm_wmi snd_soc_rt5640 snd_soc_rl6231 crc32_pclmul snd_soc_core snd_hda_intel snd_hda_controller ghash_clmulni_intel snd_hda_codec snd_compress bnep aesni_intel snd_hwdep rfcomm snd_pcm_dmaengine cfg80211 bluetooth aes_x86_64 lrw gf128mul snd_pcm glue_helper ablk_helper 6lowpan_iphc i915 cryptd snd_seq_midi snd_seq_midi_event serio_raw snd_rawmidi snd_seq drm_kms_helper snd_seq_device snd_timer dw_dmac drm dw_dmac_core mei_me snd i2c_hid spi_pxa2xx_platform mei 8250_dw i2c_algo_bit acpi_pad video snd_soc_sst_acpi soundcore i2c_designware_platform shpchp tpm_infineon mac_hid i2c_designware_core wmi parport_pc ppdev binfmt_misc coretemp lp parport hid_generic usbhid hid e1000e psmouse ahci libahci ptp pps_core sdhci_acpi sdhci
  Dec 15 17:20:13 behemoth kernel: [61698.273511] CPU: 1 PID: 1819 Comm: Xorg Tainted: P           OE 3.16.0-28-generic #37-Ubuntu
  Dec 15 17:20:13 behemoth kernel: [61698.273514] Hardware name: ASUS All Series/Z97-PRO(Wi-Fi ac), BIOS 1008 05/29/2014
  Dec 15 17:20:13 behemoth kernel: [61698.273517]  0000000000000009 ffff8800b3f73c18 ffffffff81781e6a 0000000000000000
  Dec 15 17:20:13 behemoth kernel: [61698.273524]  ffff8800b3f73c50 ffffffff8106fedd 0000000000000000 ffff8800b3e5a000
  Dec 15 17:20:13 behemoth kernel: [61698.273529]  ffff8804271c8210 ffff88042558f000 ffff88042558f000 ffff8800b3f73c60
  Dec 15 17:20:13 behemoth kernel: [61698.273535] Call Trace:
  Dec 15 17:20:13 behemoth kernel: [61698.273551]  [<ffffffff81781e6a>] dump_stack+0x45/0x56
  Dec 15 17:20:13 behemoth kernel: [61698.273561]  [<ffffffff8106fedd>] warn_slowpath_common+0x7d/0xa0
  Dec 15 17:20:13 behemoth kernel: [61698.273568]  [<ffffffff8106ffba>] warn_slowpath_null+0x1a/0x20
  Dec 15 17:20:13 behemoth kernel: [61698.273609]  [<ffffffffc036d04c>] intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]
  Dec 15 17:20:13 behemoth kernel: [61698.273620]  [<ffffffff810b9710>] ? prepare_to_wait_event+0x100/0x100
  Dec 15 17:20:13 behemoth kernel: [61698.273658]  [<ffffffffc036fb13>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
  Dec 15 17:20:13 behemoth kernel: [61698.273665]  [<ffffffff81786ffb>] ? __ww_mutex_lock+0x1b/0xb0
  Dec 15 17:20:13 behemoth kernel: [61698.273700]  [<ffffffffc0370a67>] haswell_crtc_disable+0x57/0x2e0 [i915]
  Dec 15 17:20:13 behemoth kernel: [61698.273706]  [<ffffffff81787c52>] ? mutex_lock+0x12/0x30
  Dec 15 17:20:13 behemoth kernel: [61698.273743]  [<ffffffffc03714a7>] intel_crtc_update_dpms+0x67/0xa0 [i915]
  Dec 15 17:20:13 behemoth kernel: [61698.273781]  [<ffffffffc0375b19>] intel_connector_dpms+0x59/0x70 [i915]
  Dec 15 17:20:13 behemoth kernel: [61698.273816]  [<ffffffffc02c4e19>] drm_mode_obj_set_property_ioctl+0x399/0x3a0 [drm]
  Dec 15 17:20:13 behemoth kernel: [61698.273845]  [<ffffffffc02c4e50>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
  Dec 15 17:20:13 behemoth kernel: [61698.273865]  [<ffffffffc02b3a4f>] drm_ioctl+0x1df/0x680 [drm]
  Dec 15 17:20:13 behemoth kernel: [61698.273877]  [<ffffffff8121ffac>] ? fsnotify+0x27c/0x350
  Dec 15 17:20:13 behemoth kernel: [61698.273884]  [<ffffffff8121ffac>] ? fsnotify+0x27c/0x350
  Dec 15 17:20:13 behemoth kernel: [61698.273891]  [<ffffffff811f5138>] do_vfs_ioctl+0x2c8/0x4a0
  Dec 15 17:20:13 behemoth kernel: [61698.273898]  [<ffffffff811e3641>] ? __sb_end_write+0x31/0x60
  Dec 15 17:20:13 behemoth kernel: [61698.273906]  [<ffffffff811e11b2>] ? vfs_write+0x1b2/0x1f0
  Dec 15 17:20:13 behemoth kernel: [61698.273912]  [<ffffffff811f5391>] SyS_ioctl+0x81/0xa0
  Dec 15 17:20:13 behemoth kernel: [61698.273920]  [<ffffffff81789ead>] system_call_fastpath+0x1a/0x1f
  Dec 15 17:20:13 behemoth kernel: [61698.273924] ---[ end trace 5c517f44e0bb16c1 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-28-generic 3.16.0-28.37
  ProcVersionSignature: Ubuntu 3.16.0-28.37-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  izak       2992 F.... pulseaudio
   /dev/snd/pcmC1D0c:   izak       2992 F...m pulseaudio
   /dev/snd/pcmC1D0p:   izak       2992 F...m pulseaudio
   /dev/snd/controlC1:  izak       2992 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Dec 15 20:14:09 2014
  HibernationDevice: RESUME=UUID=4226b1a5-ebed-4bf9-afa2-33431caa2763
  InstallationDate: Installed on 2014-10-24 (51 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: ASUS All Series
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-28-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-28-generic N/A
   linux-backports-modules-3.16.0-28-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-11-04 (41 days ago)
  dmi.bios.date: 05/29/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1008
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z97-PRO(Wi-Fi ac)
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1008:bd05/29/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ97-PRO(Wi-Fiac):rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: All Series
  dmi.product.version: System Version
  dmi.sys.vendor: ASUS

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