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[chris pollock <1402331@xxxxxxxxxxxxxxxxxx>]

On 18 Feb, 2015 I installed kernel 3.19.0-031900-generic #201502091451
SMP Mon Feb 9 14:52:52 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux to see if
the above bug had been fixed. This morning at 07:18:55, 19 Feb 2015 the
system froze while clicking on a link to open in Firefox. The above
'Hangcheck' error did not appear in my syslog, below is what I see
during that time period. Note: I was able to CTRL>ALT>F1 into a terminal
and logged in. Attempted to run 'startx' however it did not run
(possibly I did it wrong) but I will attach the Xorg.1.log from this as
well as dmesg from the boot. The below are the lines from my syslog when
this lockup happened:

Feb 19 07:18:54 localhost kernel: [49604.616334] [drm:i915_gem_open] 
Feb 19 07:19:59 localhost kernel: [49669.989779] [drm:intel_crtc_cursor_set_obj] cursor off
Feb 19 07:19:59 localhost kernel: [49669.989786] [drm:g4x_check_srwm] SR watermark: display plane 92, cursor 2
Feb 19 07:19:59 localhost kernel: [49669.989789] [drm:g4x_check_srwm] display watermark is too large(92/63), disabling
Feb 19 07:19:59 localhost kernel: [49669.989791] [drm:intel_set_memory_cxsr] memory self-refresh is disabled
Feb 19 07:19:59 localhost kernel: [49669.989794] [drm:g4x_update_wm] Setting FIFO watermarks - A: plane=40, cursor=2, B: plane=2, cursor=2, SR: plane=0, cursor=0
Feb 19 07:20:00 localhost kernel: [49670.747858] [drm:intel_crtc_set_config] [CRTC:9] [FB:47] #connectors=1 (x y) (0 0)
Feb 19 07:20:00 localhost kernel: [49670.747862] [drm:intel_set_config_compute_mode_changes] computed changes for [CRTC:9], mode_changed=0, fb_changed=1
Feb 19 07:20:00 localhost kernel: [49670.747865] [drm:intel_modeset_stage_output_state] [CONNECTOR:13:VGA-1] to [CRTC:9]
Feb 19 07:20:00 localhost kernel: [49670.747867] [drm:intel_modeset_affected_pipes] set mode pipe masks: modeset: 1, prepare: 1, disable: 0
Feb 19 07:20:00 localhost kernel: [49670.747870] [drm:connected_sink_compute_bpp] [CONNECTOR:13:VGA-1] checking for sink bpp constrains
Feb 19 07:20:00 localhost kernel: [49670.747872] [drm:intel_modeset_pipe_config] plane bpp: 24, pipe bpp: 24, dithering: 0
Feb 19 07:20:00 localhost kernel: [49670.747874] [drm:intel_dump_pipe_config] [CRTC:9][modeset] config for pipe A
Feb 19 07:20:00 localhost kernel: [49670.747875] [drm:intel_dump_pipe_config] cpu_transcoder: A
Feb 19 07:20:00 localhost kernel: [49670.747876] [drm:intel_dump_pipe_config] pipe bpp: 24, dithering: 0
Feb 19 07:20:00 localhost kernel: [49670.747878] [drm:intel_dump_pipe_config] fdi/pch: 0, lanes: 0, gmch_m: 0, gmch_n: 0, link_m: 0, link_n: 0, tu: 0
Feb 19 07:20:00 localhost kernel: [49670.747879] [drm:intel_dump_pipe_config] dp: 0, gmch_m: 0, gmch_n: 0, link_m: 0, link_n: 0, tu: 0
Feb 19 07:20:00 localhost kernel: [49670.747881] [drm:intel_dump_pipe_config] dp: 0, gmch_m2: 0, gmch_n2: 0, link_m2: 0, link_n2: 0, tu2: 0
Feb 19 07:20:00 localhost kernel: [49670.747882] [drm:intel_dump_pipe_config] audio: 0, infoframes: 0
Feb 19 07:20:00 localhost kernel: [49670.747882] [drm:intel_dump_pipe_config] requested mode:
Feb 19 07:20:00 localhost kernel: [49670.747885] [drm:drm_mode_debug_printmodeline] Modeline 0:"1680x1050" 60 119000 1680 1728 1760 1840 1050 1053 1059 1080 0x48 0xa
Feb 19 07:20:00 localhost kernel: [49670.747886] [drm:intel_dump_pipe_config] adjusted mode:
Feb 19 07:20:00 localhost kernel: [49670.747889] [drm:drm_mode_debug_printmodeline] Modeline 0:"1680x1050" 60 119000 1680 1728 1760 1840 1050 1053 1059 1080 0x48 0xa
Feb 19 07:20:00 localhost kernel: [49670.747891] [drm:intel_dump_crtc_timings] crtc timings: 119000 1680 1728 1760 1840 1050 1053 1059 1080, type: 0x48 flags: 0xa
Feb 19 07:20:00 localhost kernel: [49670.747892] [drm:intel_dump_pipe_config] port clock: 119000
Feb 19 07:20:00 localhost kernel: [49670.747893] [drm:intel_dump_pipe_config] pipe src size: 1680x1050
Feb 19 07:20:00 localhost kernel: [49670.747894] [drm:intel_dump_pipe_config] gmch pfit: control: 0x00000000, ratios: 0x00000000, lvds border: 0x00000000
Feb 19 07:20:00 localhost kernel: [49670.747896] [drm:intel_dump_pipe_config] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
Feb 19 07:20:00 localhost kernel: [49670.747897] [drm:intel_dump_pipe_config] ips: 0
Feb 19 07:20:00 localhost kernel: [49670.747897] [drm:intel_dump_pipe_config] double wide: 0
Feb 19 07:20:00 localhost kernel: [49670.747912] [drm:i9xx_update_primary_plane] Writing base 00546000 00000000 0 0 6720
Feb 19 07:20:00 localhost kernel: [49670.844013] ------------[ cut here ]------------
Feb 19 07:20:00 localhost kernel: [49670.844035] WARNING: CPU: 0 PID: 1035 at /home/kernel/COD/linux/drivers/gpu/drm/drm_irq.c:1130 drm_wait_one_vblank+0x12f/0x180 [drm]()
Feb 19 07:20:00 localhost kernel: [49670.844035] vblank wait timed out on crtc 0
Feb 19 07:20:00 localhost kernel: [49670.844064] Modules linked in: usblp(E) ses(E) snd_hda_codec_analog(E) enclosure(E) snd_hda_codec_generic(E) i915(E) snd_hda_intel(E) snd_hda_controller(E) snd_hda_codec(E) coretemp(E) snd_hwdep(E) snd_pcm(E) uas(E) gpio_ich(E) dell_wmi(E) usb_storage(E) dcdbas(E) sparse_keymap(E) kvm(E) snd_seq_midi(E) video(E) joydev(E) snd_seq_midi_event(E) snd_rawmidi(E) drm_kms_helper(E) drm(E) snd_seq(E) snd_seq_device(E) serio_raw(E) snd_timer(E) bnep(E) rfcomm(E) lpc_ich(E) snd(E) i2c_algo_bit(E) bluetooth(E) soundcore(E) 8250_fintek(E) ppdev(E) wmi(E) shpchp(E) lp(E) mac_hid(E) parport_pc(E) parport(E) binfmt_misc(E) hid_generic(E) usbhid(E) psmouse(E) pata_acpi(E) hid(E) e1000e(E) ptp(E) pps_core(E)

I'm not sure now how to proceed however I will continue to run the
3.19.0 kernel.

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https://bugs.launchpad.net/bugs/1402331

Title:
  System will periodically lockup with [drm:i915_hangcheck_elapsed]
  *ERROR* Hangcheck timer elapsed... render ring idle

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have noticed the lockups periodically since 09/13/2014. I can't
  remember what kernel version was in use then possibly kernel
  3.13.0-35-generic or -36. It has continued periodically through
  versions -39; -40 and now to -43.  The last time this has happened was
  today Dec 13 14:40:57 localhost kernel: [154858.820009]
  [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render
  ring idle. At times when it locks up I will have a cursor on a black
  screen and will have to press the power button to restart other times
  it will lockup whenever I'm in an application such as Firefox or
  Evolution. At that time I can usually CTRL>ALT-F1 log in and run 'sudo
  reboot' to restart the system.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-43-generic 3.13.0-43.72
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
  Uname: Linux 3.13.0-43-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  chris      2445 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Sat Dec 13 20:22:51 2014
  HibernationDevice: RESUME=UUID=bb329dc0-0642-4b6a-876a-12c2f02fb7f6
  InstallationDate: Installed on 2014-10-24 (50 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  MachineType: Dell Inc. OptiPlex 780
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic root=UUID=4254a7e9-429b-4f53-a08c-ae7ff839b98f ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-43-generic N/A
   linux-backports-modules-3.13.0-43-generic  N/A
   linux-firmware                             1.127.10
  RfKill:

  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/13/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0C27VV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.asset.tag: LE0006476
  dmi.chassis.type: 6
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/13/2010:svnDellInc.:pnOptiPlex780:pvr:rvnDellInc.:rn0C27VV:rvrA01:cvnDellInc.:ct6:cvr:
  dmi.product.name: OptiPlex 780
  dmi.sys.vendor: Dell Inc.

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