agpgart Intel i865PE Chipset

[Hawg]

Kernel version 2.4.21. I'm trying to get DRI working for 3D acceleration. The card is a Radeon 9000 4x agp. dmesg out put shows

Jul 30 19:28:40 Grinch kernel: Linux agpgart interface v0.99 (c) Jeff Hartmann
Jul 30 19:28:40 Grinch kernel: agpgart: Maximum main memory to use for agp memory: 203M
Jul 30 19:28:40 Grinch kernel: agpgart: Unsupported Intel chipset (device id: 2570), you might want to try agp_try_unsupported=1.


So in my rc.local file I have

modprobe agpgart agp_try_unsupported=1

This allows me to have DRI working but I usually get lockup when I log out of X. It happens 1 out of every 5 or so times.

Question is how come the newest kernel does not support this chipset. Do I need to patch the kernel source and rebuild? Lokking over xconfig for 2.4.21 there is no mention of a intel 865 chipset.

[Alex Cavnar, aka alc6379]

I personally don't run this chipset, but have you tried a Google For Linux (http://www.google.com/linux) search for "i865PE"?

Maybe someone else had or is having issues, and you could compare notes.

[GreenBeret]

This allows me to have DRI working but I usually get lockup when I log out of X. It happens 1 out of every 5 or so times.

It's a conflict between X and the Radeon cards. There's a fix somewhere on Mandrake site, which updates the X server. Or you can check xfree site. I had this problem before, but now I have a Nvidia card so I deleted the files :/ If it weren't for that I could upload them for you.

[mdwatts]

Originally posted by Hawg

So in my rc.local file I have

modprobe agpgart agp_try_unsupported=1


Add the following to /etc/modules.conf

alias char-major-10-175 agpgart
pre-install nvidia modprobe "-k" "agpgart"
alias char-major-195 nvidia

and add

options agpgart agp_try_unsupported=1

if required.

Run

depmod -ae

as root after changing anything in /etc/modules.conf.

Check your system and X logfiles for any problems.

less /var/log/messages

grep EE /var/log/XFree86.0.log

less /home/<user>/.xsession-errors

[Hawg]

GreenBeret:

So your saying it is a known bug? Could you provide me some more details. I will check the xfree site in the meantime.


mdwatts:

I just a bit confused as to what the difference between your modules.conf and mine is? Both file use agpgart in generic mode (which may be the problem). Should I simply replace the nvidia reference to the radoen.o module?

I guess it is this line that I'm confused over
pre-install nvidia modprobe "-k" "agpgart"

Could you explain?

[mdwatts]

:)

Forgot you were using the Radeon instead of Nvidia.

Yes, try replacing nvidia with radeon and see if that works/helps.

pre-install nvidia modprobe "-k" "agpgart"

Ensures agpgart is loaded before the nvidia module.