Bug#463076: xserver-xorg-video-ati: machine freezes when X is stopped or second X started

Bram Senders bram at luon.net
Wed Mar 5 00:25:17 PST 2008

On Tue, 2008-02-26 at 23:49 +0000, Roger Leigh wrote: 
> Hi folks,
> Just another datapoint for this bug.  My Mac Mini has a
> 0000:00:10.0 VGA compatible controller: ATI Technologies Inc RV280
> [Radeon 9200] (rev 01) (prog-if 00 [VGA controller])
> and I was also bitten by this bug.  My system locked hard if I tried to
> kill X or shutdown the system (which causes kdm to stop X).  It also
> locked if I tried to switch to a VT with C-A-Fn.
> Further investigation showed that this worked 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.
> Is this the same for the other people suffering from this bug?

Yes, I can confirm this.  The only difference is that I have to boot
with a lower resolution (1024x768), otherwise my monitor stays blank
(even though it is capable of displaying higher resolutions).  I can now
switch VTs as well... this has never been possible for me before (after
X had started, all VTs always weren't capable of being displayed

So thank you Roger, for this hint!  My Mac Mini has more functionality
now ;-)


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