[Bug 24311] New: R600, KMS: KDE4 freezes after several seconds

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=24311

           Summary: R600, KMS: KDE4 freezes after several seconds
           Product: xorg
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: astronomo at op.pl
         QAContact: xorg-team at lists.x.org
                CC: astronomo at op.pl


Created an attachment (id=30052)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=30052)
Xorg.0.log

I tested KMS support for R600 for my Mobility Radeon HD 3650. I followed the
steps described in http://wiki.x.org/wiki/radeonBuildHowTo in order to install
the most recent software stack. I am using kernel version 2.6.31.1 with the
drm-next branch merged, libdrm 2.4.13 and the most recent driver GIT master of
xf86-video-ati (last commit 8404c37b2ff95aba31db97676f106ec2f30fda7f).

The system boots up, text console looks stable, and KDM login screen shows up
correctly. However, after login to KDE 4.3.1, the screen freezes shortly after
a time period of about 15-20 seconds. Sometimes the screen becomes white and
then my laptop reboots.

In the case when the screen only freezes, I can still move mouse cursor, and
shut down the machine cleanly, but I cannot move any window, and switch to the
text console.

I tried that with DRI and EXA off in the xorg.conf, but the problem does not
disappear.

My software stack is:
 xorg-server 1.6.3.901,
 libdrm 2.4.13,
 mesa 7.5.1 (but tested the master branch of git repository 7.7-devel),
 master branch of xf86-video-ati.
 dri2proto 2.1

My hardware is laptop ASUS M50SA with 4GB system memory, and graphics 1GB
Mobility Radeon HD 3650.

I'll attach Xorg.0.log, dmesg, xorg.conf, and lspci -a output.


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