[Bug 17996] EXA accelmethod crashes Xorg when viewing pictures.

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Oct 9 23:37:05 PDT 2008


--- Comment #2 from Gian Paolo Mureddu <gmureddu at prodigy.net.mx>  2008-10-09 23:37:05 PST ---
(In reply to comment #1)
> Sounds like a GPU lockup.
> > This only happens when Option "AccelMethod" "EXA" is enabled in xorg.conf, when
> > using XAA performance is noticeably slower in 2D in general, but X doesn't
> > crash. I'm using Xorg-video-ati 6.9.0 release built from source against Xorg
> > 1.5.0 on Fedora 9, the same happens with the driver built from GIT.
> Does:
> Option "renderaccel" "false"
> help?
> > 
> > It may be worth noting that with XServer 1.4.99 EXA worked just fine, but with
> > release 1.5 it does not.
> when you say "just fine" do you mean "didn't used to hang" or something else? 
> Any chance you could use git bisect on the xserver to track down what commit
> between 1.4.99 and 1.5 broke things?

First of all, thanks for replying, Alex.

By "working just fine" with 1.4.99 I mean that X doesn't crash under pretty
much any circumstances or at least not any of the ones which consistently crash
with EXA on 1.5.0... Just tried with the RadeonHD driver from GIT (the one with
pretty much the same degree of support than the Radeon driver) and this problem
also happens. It takes a bit more (more panning "passes"), but still happens.
So I do believe that this might have more to do with the XServer than the
drivers themselves. How would I use that "git bisect"? Maybe it could be worth
to bring this to the attention of the XServer maintainers of Fedora? 

I will try your suggestions for redneraccel, see what happens and report back.

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