[Bug 38382] New: radeon: wait for empty RBBM fifo failed

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=38382

           Summary: radeon: wait for empty RBBM fifo failed
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.0.0-rc4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri at kernel-bugs.osdl.org
        ReportedBy: stavallo at unina.it
        Regression: No


Created an attachment (id=63662)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=63662)
dmesg with pageflipping disabled

My system is affected by frequent oopses that makes it unusable. There are no
problems when the X server is not launched, but when it starts (with KDM)
something bad soon happens. If I don't login into KDM, it may freeze after few
minutes. If I login, an oops happen after few minutes. Unfortunately I can't
tell exactly when this behavior started to happen, but somewhere between 2.6.39
and 2.6.39.1. Yesterday I compiled the kernel from git but no luck. I tried to
disable pageflipping (as suggested in bug #32402) but the oops happened again.
WIth pageflipping disabled, I managed to ssh into the machine and get dmesg and
Xorg.log (attached). Unfortunately, I didn't manage to ssh into the machine
with pageflipping enabled.

I have a Radeon X300 card and I am using mesa git from 20110616, libdrm 2.4.25
and Xorg 1.10.2.

If I need to test anything, please let me know, thanks.

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