Comment # 18 on bug 1084767 from Max Staudt

Thanks Mircea for the extensive testing.

(I've been away for a week, thus the delay)

Since your problems happen with both the radeon driver and the amdgpu driver,
it sounds like an issue that is either common to both drivers (they're both
written by AMD), or a hardware fault. Since limiting the bandwidth between the
host and the card helps you, it's either a bug in memory management, or on the
mainboard, or on the card.

My bet is on a hardware problem. You also suspect the GPU's firmware - this may
well be a problem, too. Have you tried a different Radeon card? How about a 3rd
party graphics card (e.g. Nvidia)? How about the same card, but a different
computer?


For reference, I'll link your new upstream bug report here:

  https://bugs.freedesktop.org/show_bug.cgi?id=105425

And the old one:

  https://bugs.freedesktop.org/show_bug.cgi?id=101672

Thanks for reporting these!


Please let me also repeat what Christian K�nig said upstream in the old bug -
it is very, very unlikely that this is a symptom of malware being tested on
your system. Why would someone want to keep you from playing Xonotic by hanging
your GPU? That makes no sense to me.

And lo and behold, in the new bug, a hardware fault is suggested:

  https://bugs.freedesktop.org/show_bug.cgi?id=105425#c13

FWIW, I've had an ATI card fail me due to some video RAM pin coming loose
somewhere. It happens.


In any case, I'm afraid upstream is more knowledgeable here. I'd appreciate if
you kept us posted if there is an action to take, such as backporting a fix to
a driver, and we'll gladly do that for you!

So let's close this as RESOLVED UPSTREAM, but I'll stay in CC and leave the
Component set to Xorg, so we receive your updates.

*Please* try different hardware first, and also take the upstream commenter's
suggestion seriously to try Windows and see whether the card locks up there.
I'm really sorry that I can't be of more help :(