[Bug 28338] New: Dual-head with RV620 causes system lockup after a while

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28338

           Summary: Dual-head with RV620 causes system lockup after a
                    while
           Product: xorg
           Version: 7.5
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: Erbureth at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=35976)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35976)
XServer log from the freeze

System: Debian Squeeze/Sid
Kernel: 2.6.34
xserver-xorg: 7.5
xserver-xorg-core: 1.7.7
xserver-xorg-video-ati: 6.13.0
Mesa: 7.8.1
DRM: 2.4.20
RanR: 1.3.0 (1.2.0 used)
ATi Mobility Radeon HD3430 (RV620)

After setting my laptop to use the external monitor as another head
neighbourghing the laptop screen via RandR (KRandRTray app actually), the setup
seems to work for a while and then the screens go black and the machine stops
responding to whatever input, Alt+SysRq combinations included. 

No information is written into the logs (at least not to my knowing, is there a
way to send it to the different machine?), KMS is enabled.

Whatever other info you need, I'll try my best to provide.

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