[Bug 43267] [SNB rc6] GPU hangs with i915_enable_rc6=1

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https://bugzilla.kernel.org/show_bug.cgi?id=43267





--- Comment #48 from jrierab <jrierab at gmail.com>  2013-01-26 19:30:37 ---
Created an attachment (id=91851)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=91851)
Full report (dmesg, cpuinfo, version, /proc/dri/0/* etc...) mainline kernel
3.8.rc4

I've testing kernel 3.8 rc4
(http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc4-raring/) for nearly a
week now. It is very stable. The bug appeared only two times, and I am not sure
of the first one (could not get the report about it).

The second time, the desktop cease to respond (but mouse was moving) without
previous warnings. I was able to switch to console and get the report attached.
Then, went to desktop again and all window's decorations were missing, and all
the windows were in the same desktop space.

So, this bug seems to be still present, but it appears now very rarely.

BTW the dmesg output is about 250K and it appears truncated. Do you know Why it
is so? I run the kernel with the log_buf_size=4M parameter, so it should be
complete. Anyway, I attached a initial dmesg, created just after rebooting from
the crash, in case you would like to see the exact system configuration.

Also, I noticed a new 2.8rc5 kernel, so I will test it ASAP.

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