Re: RE: [Xen-devel] AGP problems with 2.0.5

[Kurt Garloff <kurt@xxxxxxxxxx>]

Hi Ian,

On Sun, Mar 13, 2005 at 06:15:33PM -0000, Ian Pratt wrote:
> > Hmm, my laptop (82855PM, Radeon Mobility 7500) just reboots if my
> > old X server (XF86 4.3.99) tries to use DRM (kernel module from
> > 2.6.11.x) :-(
> 
> OK, we thought this was a danger of building AGP in the default config,

Well, the fact that it's enabled in the SUSE kernel config does not
directly depend on your default config ;-)

> but it had been in 2.0-testing for some time and we hadn't had any
> reports.

I thought it worked before, but that was because intel-agp did not
crash the machine; the radeon DRM module was missing ...

> Please can you say exactly which modules are being loaded and used. 

radeonfb
intel-agp
drm
radeon

If I disable radeon, everything is fine.

> If
> you can get a serial line on the laptop to capture an oops message that
> would be really helpful.

The laptop has no serial port :-(
I don't see an oops; does xen reboot the machine if domain 0 oopses?
I could try noreboot to see whether this is the case, I guess?

> If you know how to tweak the Xconfig to avoid using AGP/DRM as a
> temporary measure that would be useful to put in the faq.

mv radeon.ko radeon.ko_
is what I used.

> If you're having success with particular AGP or DRM modules that would
> be helpful to hear about too.

I will have to test on more machines.
It seems to work on most, but I have to check whether DRM is used
there.

Regards,
-- 
Kurt Garloff                   <kurt@xxxxxxxxxx>             [Koeln, DE]
Physics:Plasma modeling <garloff@xxxxxxxxxxxxxxxxxxx> [TU Eindhoven, NL]
Linux: SUSE Labs (Director)    <garloff@xxxxxxx>            [Novell Inc]

Attachment: pgp2cDG12SF4E.pgp
Description: PGP signature