[Bug 11247] New: RV280 PCI hangs at start-up (high Xorg CPU usage) with DRI

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=11247

           Summary: RV280 PCI hangs at start-up (high Xorg CPU usage) with
                    DRI
           Product: xorg
           Version: git
          Platform: Other
               URL: https://bugs.launchpad.net/bugs/114520
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bugzi06.fdo.tormod at xoxy.net
         QAContact: xorg-team at lists.x.org


This was reported in Ubuntu by Mike Agnew. He has done lots of debugging,
including gdb which doesn't seem to bite on Xorg. He has now updated to
xorg-server 1.3 and ati driver 6.6.192 on top of Ubuntu Feisty.

When the server starts, the screen goes black and the keyboard is locked up.
This only happens when DRI is enabled. He can ssh from another machine and sees
that Xorg is eating CPU time. He has tried sysrq-trigger, but we can not see
Xorg in the trace.

If attaching with gdb, it's not possible to stop it with ctrl-C and gdb turns
bad. He also set the debug option on the drm module and logged from /proc/kmsg.


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