Possible bug in amd64-agp (agpgart module)

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Hi all,

Sorry for the intrusion, but i think i've stumbled across a bug in the linux kernel. On an Asus KV8-S XE motherboard, the agpgart module is unable to properly determine the AGP aperture size, regardless of bios options (AGP 8x mode & AGP 4x mode), this *might* also be related to possible hangs in X11 when using DRI.

Bug was seen on the following config:

Asus K8V-S XE motherboard, 512MB ram with AMD Sempron 3200 (Athlon64 core)
Witnessed with an ATI Radeon 9700 Pro card and with an Asus Radeon 9200 SE.

I'll try & test this config with some more gfx cards to see if the gfx card has any influence on the detection, but i'm not sure i have any nVidia cards available.

This phenomenon has been found in atleast the following kernel versions:

linux 2.6.12-r9
linux 2.6.14-r4
linux 2.6.14-r5
linux 2.6.14-r7

The reported aperture size is always 32M, more details can be provided, just ask what you need to know.

With kind regards,
Ochal Christophe
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