我一直在使用带硬件加速的 Google Chrome，在配备 Radeon GPU 的 Xubuntu 14.04 Dell Latitude E6440 上没有任何问题，效果非常好。最近，（可能是由于我按照 Ubuntu 的建议定期进行一些“系统更新”）Google-Chrome 停止工作了。我启动了它。我打开了浏览器，5 秒钟后整个系统崩溃了 !!! 我需要重新登录。
我怎样才能让 google-chrome 再次工作？（安全模式，无 GPU？）
我怎样才能使它像以前一样使用硬件加速？
以下是我在 google-chrome stderr 上得到的信息：
xxx@dellorian:~$ cat c.log
ATTENTION: default value of option force_s3tc_enable overridden by environment.
[11245:11256:0726/214546:ERROR:gpu_watchdog_thread.cc(253)] The GPU process hung. Terminating after 10000 ms.
ATTENTION: default value of option force_s3tc_enable overridden by environment.
[9:20:0727/004546:ERROR:gpu_channel_host.cc(146)] GpuChannelHost::CreateViewCommandBuffer failed.
[9:20:0727/004546:ERROR:webgraphicscontext3d_command_buffer_impl.cc(405)] Failed to initialize command buffer.
[11317:11317:0726/214547:ERROR:x11_util.cc(81)] X IO error received (X server probably went away)
[11211:11211:0727/004547:ERROR:chrome_browser_main_extra_parts_x11.cc(56)] X IO error received (X server probably went away)
[11211:11211:0727/004547:ERROR:zygote_host_impl_linux.cc(524)] Failed to send GetTerminationStatus message to zygote
[11211:11211:0727/004547:ERROR:zygote_host_impl_linux.cc(524)] Failed to send GetTerminationStatus message to zygote
[11211:11241:0727/004547:ERROR:raw_channel_posix.cc(139)] recvmsg: Connection reset by peer
[11211:11241:0727/004547:ERROR:channel.cc(297)] RawChannel fatal error (type 1)
[11211:11241:0727/004547:ERROR:raw_channel_posix.cc(139)] recvmsg: Connection reset by peer
[11211:11241:0727/004547:ERROR:channel.cc(297)] RawChannel fatal error (type 1)
这是我的 dmesg：
[11589.851137] Watchdog[11256]: segfault at 0 ip 00007fdfe09d1dde sp 00007fdfcfdb8670 error 6 in chrome[7fdfdcaab000+51d2000]
[11591.998375] [drm] probing gen 2 caps for device 8086:c01 = 261ad03/e
[11591.998382] [drm] PCIE gen 3 link speeds already enabled
[11592.003911] [drm] PCIE GART of 1024M enabled (table at 0x0000000000242000).
[11592.004069] radeon 0000:01:00.0: WB enabled
[11592.004073] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0xffff8800367bec00
[11592.004075] radeon 0000:01:00.0: fence driver on ring 1 use gpu addr 0x0000000080000c04 and cpu addr 0xffff8800367bec04
[11592.004077] radeon 0000:01:00.0: fence driver on ring 2 use gpu addr 0x0000000080000c08 and cpu addr 0xffff8800367bec08
[11592.004078] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000080000c0c and cpu addr 0xffff8800367bec0c
[11592.004079] radeon 0000:01:00.0: fence driver on ring 4 use gpu addr 0x0000000080000c10 and cpu addr 0xffff8800367bec10
[11592.145528] [drm] ring test on 0 succeeded in 2 usecs
[11592.145532] [drm] ring test on 1 succeeded in 1 usecs
[11592.145534] [drm] ring test on 2 succeeded in 1 usecs
[11592.145593] [drm] ring test on 3 succeeded in 2 usecs
[11592.145599] [drm] ring test on 4 succeeded in 1 usecs
[11592.147085] [drm] ib test on ring 0 succeeded in 0 usecs
[11592.147129] [drm] ib test on ring 1 succeeded in 0 usecs
[11592.147172] [drm] ib test on ring 2 succeeded in 0 usecs
[11592.147199] [drm] ib test on ring 3 succeeded in 0 usecs
[11592.147235] [drm] ib test on ring 4 succeeded in 0 usecs
xxx@dellorian:~$