Re: [Dri-users] DRI not working due to problem with AGP

[Roland S. <rsc...@hi...>]

BorgCube wrote:
> I had it up and running (with direct rendering) a few days ago, after
> tampering with ati-drivers unsuccessfully for months I gave DRI a shot
> and it worked immediately after I rewrote my xorg.conf. Yet yesterday I
> noticed that direct rendering was off again.
> rohanda tomboy # dmesg | grep agp
> agpgart: Detected AGP bridge 0
> agpgart: Aperture conflicts with PCI mapping.
> agpgart: Aperture from AGP @ fc000000 size 4096 MB
> agpgart: Aperture too small (0 MB)
> agpgart: No usable aperture found.
> agpgart: Consider rebooting with iommu=memaper=2 to get a good aperture.
> Linux agpgart interface v0.101 (c) Dave Jones
> 
> ===
> iommu=memaper=2 I added in my grub.conf and reinstalled - doesn't change
> anything.
> additionally i have the possibility of altering the agp-aperture-size in
> my bios between 32MB and 512 - none of these values changes anything.
Hmm, this looks bad. Did you upgrade your bios or something? I've seen 
certain bios revisions where agp is just broken...
You _could_ use Option Bustype pci in your xorg.conf, but a better idea 
would be to fix that mapping conflict. This is an agpgart problem 
however, maybe the kernel guys would know more about the problem.

Roland