[Openchrome-users] freezes on ubuntu edgy

[Benno Schulenberg]

alparras wrote:
> freezes on ubuntu edgy
> each time i try to use a 3D aplication it freezes and i need
> reboot. (supertuxkart, armagetron, glxgears at full screen).

See at the bottom.

> i read what via freezes on agp fast writes.

Possibly.  "Fast writes" don't add any notable speed, though, so 
it's better to have it off.

> how disable?

In your BIOS.  At bootup press DEL (Delete) or whatever the boot 
screen says, and find among the many options the AGP ones.

> (quote)
> Also make sure that the AGP driver is loaded before the drm
> driver. The agp driver is called via_agp.ko
> unless you're on a K8M/N800 system, where it is called
> amd64_agp.ko
> (/quote)
>
> how get that?

It should work automatically.  Check with 'lsmod | grep agp'.  If 
amd64_agp is not loaded, add am64-agp and drm to your /etc/modules 
file.  (Watch the difference between hyphen and underscore.)

> i have a Unichrome Pro IGP (K8M800)

You are experiencing this bug:
https://bugs.freedesktop.org/show_bug.cgi?id=5092
Comment #7 points to the related Ubuntu bugs.

Benno