Re: Problem with XFree86/3d acceleration

[Louis Garcia <louisg00@bellsouth.net>]

Would this fix bug 73479? You know when rawhide will start syncing
again?

--Lou


On Sat, 2002-09-14 at 22:38, Mike A. Harris wrote:
> On 10 Sep 2002, Tom Cross wrote:
> 
> >Date: 10 Sep 2002 15:18:45 -0500
> >From: Tom Cross <tomc@cloudnet.com>
> >To: limbo-list@redhat.com
> >Content-Type: text/plain
> >List-Id: Discussion of the Red Hat Linux 'Limbo' beta
> >    <limbo-list.redhat.com>
> >Subject: Re: Problem with XFree86/3d acceleration
> >
> >On Tue, 2002-09-10 at 11:29, Michael Knepher wrote:
> >> I've been running null on an Athlon XP 1800+ system with a slowly fading
> >> Voodoo3 card. Yesterday I picked up an ATI All-in-Wonder 7500 to replace
> >> the V3. Kudzu detected the card, and when the system kicked into
> >> runlevel 3, I ran redhat-config-xfree86 --reconfigure. I picked new
> >> settings, and decided to turn on 3d hardware acceleration. I started X,
> >> and decided to see how well the acceleration worked. The only things I
> >> knew of that might use 3d were some of the GL screensavers, so I opened
> >> the screensaver panel and clicked on the Atlantis module. The system
> >> locked up hard, and I had to hit the reset button. 
> >
> >We have the same problem here with RH 7.2 & RH 7.3 and some of the GL
> >screensavers.  The system locks up X.  I can telnet into people's
> >workstations to reboot them, but it's too late.  People are mad.
> >
> >Anyway, turns out some GL screensavers are fatal to X with certain video
> >cards.  I just end up disabling all GL screensavers.
> >
> >I haven't tested this with null yet to see if I still have the same
> >problem.  :-(
> 
> A long standing bug in the generic code of the DRM (kernel module 
> side of DRI) left a race condition in which a 3D client could 
> potentially lock up the X server.  Games typically did/do not 
> operate in a fashion that is likely to trigger this, however the 
> screensavers do.
> 
> The current rawhide kernel contains a DRM locking bug fix which 
> is believed to solve these types of problems on all DRI supported 
> hardware.
> 
> 
> 
> 
> -- 
> Mike A. Harris		ftp://people.redhat.com/mharris
> OS Systems Engineer
> XFree86 maintainer
> Red Hat Inc.
> 
> 
> 
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