[Bug 42678] New: Dual Screen Monitor Gnome-shell 3 hard lock ups - ATI open source Radeon

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42678

             Bug #: 42678
           Summary: Dual Screen Monitor Gnome-shell 3 hard lock ups - ATI
                    open source Radeon
    Classification: Unclassified
           Product: Mesa
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: Wattos at gmail.com


Created attachment 53265
  --> https://bugs.freedesktop.org/attachment.cgi?id=53265
last 3000 lines of .xsession-errors

I am running Ubuntu 11.10 64 bit with gnome shell 3,2 on a Intel i7-940XM with
an ATI Radeon HD 5850M. The drivers which are currently being used are the open
source drivers (xf86-video-ati 6.14.99).

I am experiencing random (on save, on dialog open, on workspace switch) hard
lockups (CTRL + ALT + F1 doesnt work, nor does ALT+PrntScrn R S E I U B). This
only happens when using two screens (independent of which output (e.g.
Displayport + VGA, Displayport + Notebook LCD) are used). 

This issue is a complete show stopper since the pc requires a hard reboot and
any unsaved items are lost indefinitely (or worse, things might get corrupted). 

I am attaching the last 3000 lines of .xsession-errors. 

uname -a:

Linux filipw-M15x 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux

Please let me know if you require any more information

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