Comment 0 for bug 1400206

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]