[Bug 93341] Semi-random GPU lockups on radeonsi with a RadeonHD 7770 (when playing videos, running OpenGL games, WebGL apps, or after extended periods of time)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93341

--- Comment #25 from Jean-François Fortin Tam <nekohayo at gmail.com> ---
Hi Julien, unfortunately with that benchmark I was not able to reproduce it so
far (I've had it running for about 9 hours). This might be just "luck" though,
as I've sometimes had the issue refuse to reproduce for hours and days, and
sometimes the issue would happen right away. As I'm suspecting it's a race
condition, I'm thinking it might also be sensitive to the system's software
collection at various times of the year (i.e. maybe with one kernel the problem
resurfaces more frequently, then another point kernel releases changes the a
bit the stack's timings and the race disappears, rinse & repeat?)

I might as well leave the benchmark running in the coming days, but at least
you know that it's (probably) not directly due to the system load or the GPU
load... as I mentioned in earlier comments, it seems to be quite random. For
some reason, I haven't encountered a random lockup in a month, although I've
grown to use my computer in light ways (too scared to play fullscreen videos or
use 3D, except composited window managers)

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