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[Richard Eames <1400206@xxxxxxxxxxxxxxxxxx>]

The apport window that pops up after crashes lists this bug as a
duplicate of https://bugs.launchpad.net/bugs/1402523 which does not
exist.

One thing I do notice that crashes it: if I hover over the tab name, the
tooltip will sometimes stay and become a white rectangle, if I then try
to show another tooltip on the tab name, the browser locks up.

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https://bugs.launchpad.net/bugs/1400206

Title:
  Chromium hangs: GPU process hung

Status in chromium-browser package in Ubuntu:
  Confirmed

Bug description:
  Starting with a recent update to either my graphics card, or to
  chromium, it (chromium) will seem to hang after resuming from a lock
  screen. By hang, I mean it seems to refuse to redraw since it still
  responds to mouse clicks on the close button. Here's the stderr output
  on console:

  ATTENTION: default value of option force_s3tc_enable overridden by environment.
  [11795:11795:1207/210031:ERROR:sandbox_linux.cc(305)] InitializeSandbox() called with multiple threads in process gpu-process
  [11759:11806:1207/210033:ERROR:get_updates_processor.cc(240)] PostClientToServerMessage() failed during GetUpdates
  [11795:11828:1207/211957:ERROR:gpu_watchdog_thread.cc(253)] The GPU process hung. Terminating after 10000 ms.
  [12793:12794:1207/212007:ERROR:gpu_watchdog_thread.cc(253)] The GPU process hung. Terminating after 10000 ms.
  [11759:11759:1207/212008:ERROR:gpu_process_transport_factory.cc(437)] Failed to establish GPU channel.
  [11759:11759:1207/212008:ERROR:gpu_process_transport_factory.cc(461)] Lost UI shared context.
  [11759:11806:1207/220155:ERROR:get_updates_processor.cc(240)] PostClientToServerMessage() failed during GetUpdates

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: chromium-browser 39.0.2171.65-0ubuntu0.14.10.1.1106
  ProcVersionSignature: Ubuntu 3.16.0-26.35-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-26-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sun Dec  7 22:21:35 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-08-21 (109 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  SourcePackage: chromium-browser
  UpgradeStatus: Upgraded to utopic on 2014-11-05 (32 days ago)
  modified.conffile..etc.default.chromium.browser: [deleted]
  --- 
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 14.10
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-02-16 (1083 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  Package: chromium-browser 39.0.2171.65-0ubuntu0.14.10.1.1106
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
  Tags:  utopic
  Uname: Linux 3.11.0-14-generic x86_64
  UpgradeStatus: Upgraded to utopic on 2014-11-04 (91 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  _MarkForUpload: True
  modified.conffile..etc.chromium.browser.default:
   # Default settings for chromium-browser. This file is sourced by /bin/sh from
   # /usr/bin/chromium-browser
   . /usr/lib/pepflashplugin-installer/pepflashplayer.sh
   # Options to pass to chromium-browser
   CHROMIUM_FLAGS=""
  modified.conffile..etc.default.chromium.browser: [deleted]
  mtime.conffile..etc.chromium.browser.default: 2014-07-14T09:22:20.527190

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