Tried with the radeon.agpmode parameter. I discovered that the default setting on my system is 4.
None of the tried settings (-1, 1, 2, 4) did anything to the but I noted that the graphics corruption was different with the -1 setting.
I noted a couple of things in my dmesg that I am not sure are important:
First, it says that it detects 64M of VRAM and later says that 32M of VRAM is actually ready.
Secondly, the aperture size stays at 128M for all agpmode settings except -1, when it changes to 512M.
Tried with the radeon.agpmode parameter. I discovered that the default setting on my system is 4.
None of the tried settings (-1, 1, 2, 4) did anything to the but I noted that the graphics corruption was different with the -1 setting.
I noted a couple of things in my dmesg that I am not sure are important:
First, it says that it detects 64M of VRAM and later says that 32M of VRAM is actually ready.
Secondly, the aperture size stays at 128M for all agpmode settings except -1, when it changes to 512M.