[Bug 43835] System crashes when radeon firmware blob (R520_cp.bin) is installed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43835

--- Comment #43 from Jonathan Nieder <jrnieder at gmail.com> 2012-01-25 12:39:49 PST ---
bugzilla-daemon at freedesktop.org wrote:

> I have finally to surrender. If anyone thinks on anything we can try, you can
> contact directly to me or add the information here.

Ok, just to fill in the blanks: was this a regression?  Was there a
kernel or X or GNOME upgrade before which the system worked fine and
after which it broke?

X devs: it looks like there are two sets of symptoms here ---
sometimes there are GPU lockups, and other times (e.g., the syslog
from 2012-01-22) page table corruption with no obvious trouble before
that.  Questions:

 - is there any simple way to figure out what exactly is causing the
   regression?  E.g., after starting X without accelaration can we
   explicitly provoke whatever caused trouble?

 - is it normal that after a lockup the GPU fails to reset?  Even if
   the GPU lockup itself is not well understood, is that later failure
   fixable?

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