[Bug 15056] New: [radeon] machine freezes when X is stopped or second X started

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=15056

           Summary: [radeon] machine freezes when X is stopped or second X
                    started
           Product: xorg
           Version: git
          Platform: Other
               URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=463076
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: brice.goglin at ens-lyon.org
         QAContact: xorg-team at lists.x.org


Bram Senders reported this bug a couple weeks ago. He has a PowerPC Mac Mini
with a Radeon 9200.

"The machine freezes when the Xserver is stopped...  Just a hard freeze when I
try to logout, or shutdown the machine, or restart gdm; anything that kills the
X server causes the entire machine to lock up."

There's a log availabel at
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=10;bug=463076

Disable DRI, switching to PCI bus type or changing AGPMode didn't help. Only
reverting from 6.8.0 to 6.6.193 helped.

Agustin Martin reported a similar problem. And Roger Leigh added:
"It works perfectly if I booted the system with
"video=radeonfb:1680x1050-32 at 60" on the command-line.  I can now switch VTs at
will, as well as start and stop X, shut down the system, etc. without problems.
However, booting with "video=ofonly" results in all the problems mentioned
above.

It might be an issue with the OF framebuffer, or the attempt to restore
the framebuffer when X terminates or VT switches.  IME, ofonly doesn't
come back when you end X, but previously you just got a black screen
rather than a lockup."


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