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

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17996

           Summary: EXA accelmethod crashes Xorg when viewing pictures.
           Product: xorg
           Version: 7.4
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: gmureddu at prodigy.net.mx
         QAContact: xorg-team at lists.x.org


Created an attachment (id=19545)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=19545)
Xorg log from a crash

I have been experiencing several bugs with the Xorg-video-ati driver 6.9.0 and
GIT on my RS690 based X1200 card in my laptop.

This particular bug pertains EXA crashing the Xserver when "viewing pictures".
The best way to describe it is that the system becomes unresponsive as soon as
panning of a picture (despite the program being used) starts. I have been able
to SSH into the machine and see what processes are active. Xorg eats anywhere
between 99-150% CPU (the laptop CPU is dual core). There is nothing out of the
ordinary in system-log, dmesg and only one time I've been able to get something
in Xorg.0.log about the Xserver entering an infinite loop, never too reliably,
though. The "crash" always happens with any image file if zoomed in or at
normal size when viewed on any program as soon as I start panning, the system
becomes unresponsive, mouse jerky, I don't seem able to snap out of X
[ctrl+alt+Fx].

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.

It may be worth noting that with XServer 1.4.99 EXA worked just fine, but with
release 1.5 it does not.


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