Radeon 7500 w/ DRI locking on restart of X

[Sean Welch]

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...

                                                   Sean

-------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
>