@Chris: I'm not 100% sure, for my home machine it was either a Radeon HD 4850 or a Radeon R7 200 series.
I think this bug was "fixed" on both machines once I upgraded to Ubuntu 15.10. (Although on my work machine 15.10 caused a different system freeze bug starting with that release that didn't fix until I changed the graphics card again.) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1400206/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
