[Bug 63599] New: [r600][r600] GPU lockup CP stall (kernel 3.8, 3.9)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63599

          Priority: medium
            Bug ID: 63599
          Assignee: dri-devel at lists.freedesktop.org
           Summary: [r600][r600] GPU lockup CP stall (kernel 3.8, 3.9)
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: wojtask9 at wp.pl
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 78069
  --> https://bugs.freedesktop.org/attachment.cgi?id=78069&action=edit
lspci

This happens always with KDM, LightDM/XDM (xdm-archlinux package). Login screen
freezes (but I can move mouse pointer).

First I thought that was my configuration error but the same issue with knoppix
livecd (7.0.5, kernel 3.6.10, mesa-9.0.1)

Without Display Manager (startx from console) result is the same. Screen
appears but is frozen (test using xfce4 and kde). Without DM I don't see any
GPU lockup but Xorg.0.log shows errors.

Setting R600_HYPERZ=0 or R600_DEBUG=nohyperz doesn't help

system
kernel 3.8.5 or 3.9.0-rc7
mesa 9.1.1 
other packages are up to date form arch repository

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