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

[Agustin Martin]

On Wed, Mar 05, 2008 at 09:25:17AM +0100, Bram Senders wrote:
> 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
> anymore).
> 
> So thank you Roger, for this hint!  My Mac Mini has more functionality
> now ;-)

Just adding that after setting my xorg to use framebuffer in /etc/xorg.conf
(through the debconf prompt) I can no longer reproduce the problem,

-------------------------------------------------------------------
$ diff -u xorg.conf.20080505151844 xorg.conf
--- xorg.conf.20080505151844    2008-05-05 15:18:44.000000000 +0200
+++ xorg.conf   2008-05-05 15:18:44.000000000 +0200
@@ -29,6 +29,7 @@
 
 Section "Device"
        Identifier      "Configured Video Device"
+       Option          "UseFBDev"              "true"
 EndSection
 
 Section "Monitor"
-------------------------------------------------------------------

Unfortunately, this seems to not fix

http://bugs.debian.org/472703
#472703: wdm: Sometimes I cannot login, Enter doesn't work

Although I already cc'ed the X strike force about this, I would like
to explicitly make you aware of that bug report, since the two persons
that have experienced it are using ATI radeon. I think that #472703 did
propagate to testing right after xserver-xorg-video-ati reached it.

-- 
Agustin