Radeon 7500 w/ DRI locking on restart of X

[Glenn Johnson]

On Tue, Aug 26, 2003 at 01:01:34PM -0500, Sean Welch wrote:

> Thanks -- I'll give it a try.  I know that in the laptop the card can
> be addressed as either a PCI or an AGP card; I don't think that will
> work in the desktop.  I'll try it anyway...

It should work for an AGP card.  Any specific AGP settings you had, such
as "AGPMode" or "AGPSize" will be deactivated though.  This is not a
solution but hopefully a way to avoid the lock ups and still have _some_
3D acceleration until the problem gets fixed properly.

Please remember to provide feedback as to whether it eliminates the lock
ups or not.

> -------Original Message-------
> From: Glenn Johnson <gjohnson at srrc.ars.usda.gov>
> Sent: 08/26/03 02:54 PM
> To: Sean_Welch at alum.wofford.org
> Subject: Re: Radeon 7500 w/ DRI locking on restart of X
>
>
> > On Tue, Aug 26, 2003 at 12:21:56PM -0500, Sean Welch wrote:
>
> > Is anyone else seeing this issue?
>
> Yes, I have a Radeon 9100 that does the same thing.  In fact, I sent a
> message to the -current mailing list just a couple of days ago.
>
> > I'm running into it on desktop boxes and a laptop running
> > 4.8-RELEASE with up to date ports collections and various versions
> > of DRI installed over a ports version of X.  I'm also seeing this
> > under 5.1-RELEASE on the laptop.
> >
> > Everything works perfectly unless/until I restart the X server.
> > This appears to be initiated automatically when running GDM -- ie,
> > GDM starts, you log in using that X session, you log out and the
> > session stops, GDM starts X again and displays the login screen.
> >
> > This seems to happen a bit more than 1/3 of the times I try it
> > (intentionally or not).  It isn't much of a problem on the laptop
> > as I'm the only user and tend to turn the machine off when I log
> > out but it is causing all sorts of issues on the desktops because
> > they are intended to be used as multi-user (serially and also
> > simultaneously) systems.
> >
> > Any ideas?  The instability goes away completely with DRI disabled,
> > but part of the use of these desktops is in the accelerated OpenGL
> > rendering...
>
> Well, I may have a work around.  Try putting the following in the
> Device section of your XF86Config file:
>
> Option "ForcePCIMode" "true"
>
> That will slow down your 3D acceleration though.  I have been running
> with this option for about 2 days and have not had a lockup with it
> yet.  I was going to run it for another day or so and contact Eric
> Anholt about it.  See if it works for your machines.  That should
> provide enough corroborating evidence.

-- 
Glenn Johnson
USDA, ARS, SRRC			 Phone: (504) 286-4252
New Orleans, LA 70124		e-mail: gjohnson at srrc.ars.usda.gov