[Dri-users] via_agp, linux 2.6, radeon woes

[Tim K. <en...@r0...>]

Hello all,

I've been messing with this for about three days, and am totally 
stumped.

To summarize: 
If I load agpgart, via_agp and radeon, then start X, my computer 
completely freezes with no way out other than a hard reset (I can't 
even ping it, and the hangcheck timer doesn't kick in either).


I grabbed all the DRI stuff for debian from the debs provided on the dri 
site.

I've got:

drm-trunk-module-2.6.0-test11                   install
drm-trunk-module-src                            install
xlibmesa-gl1-dri-trunk                          install
xserver-xfree86-dri-trunk                       install


Using debian sid, ati radeon 9000, xfree 4.3 (from dri-trunk), via kt133 
motherboard (abit kt7a), athlon 1200 cpu. Linux 2.6.0-test11.  DRI 
modules and kernel made with make-kpkg.

*If I don't load via_agp, X will start, but DRI will not load 
(naturally).

* I don't have any console frame buffer modules loaded

*Unfortunately, when I try to startx and the machine locks up, when I 
reboot, my XFree logs are empty for some reason, yet before it locks 
up, I see some pretty interesting radeon error (EE) messages, but I 
don't know how to capture them (it freezes too fast)

*setpci says my card has bus mastering enabled.

*I would think this is hardware related, but my card works fine in w2k 
with games, etc.

Here's the related kernel messages when loading the modules:

# modprobe via_agp
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected VIA Twister-K/KT133x/KM133 chipset
agpgart: Maximum main memory to use for agp memory: 439M
agpgart: AGP aperture is 128M @ 0xd0000000
# modprobe radeon
[drm] Initialized radeon 1.9.0 20020828 on minor 0

I do see some of this in my syslog:
drm:radeon_cp_init] *ERROR* radeon_cp_init called without lock held
[drm:radeon_unlock] *ERROR* Process 520 using kernel context 0


When I used 2.4, X would also freeze if the agpgart module was loaded, 
DRI or not.

Perhaps I could try some alternate bios settings?  
Module load time options?