[Bug 90076] Random screen lockups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90076

            Bug ID: 90076
           Summary: Random screen lockups
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: nicolamori at aol.com

Created attachment 115164
  --> https://bugs.freedesktop.org/attachment.cgi?id=115164&action=edit
dmesg

I experience random lockups of the screen. The screen goes black then sometimes
the image is back but frozen, sometimes it stays black. I can't do anything but
a hard reset. It happens randomly when using KDE4 desktop and common
applications (eclipse, firefox etc.). I did not notice any correlation with any
particular usage pattern or application. I have DPM enabled.
I attach the significant part of journaclt log recovered after reboot.

Hardware: Mobility Radeon HD3470 (RV620)
System: ArchLinux x86_64
Packages: linux 3.19.4  with ck patchset, xf86-video-ati 1:7.5.0, mesa 10.5.3

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