Mobility Radeon HD 3870 / M88 drivers... :(

[bridgman]

Just to be clear, I'm not saying "you have to run with 2GB for the rest of your life", but some BIOSes do muck up the memory mapping (MTRRs) with >=4GB. Reducing the memory to 3GB or less, either using the mem= boot parm or popping some memory, is an easy way to find if that is your problem.

[Poop Loops]

Just to be clear, I'm not saying "you have to run with 2GB for the rest of your life", but some BIOSes do muck up the memory mapping (MTRRs) with >=4GB. Reducing the memory to 3GB or less, either using the mem= boot parm or popping some memory, is an easy way to find if that is your problem.

I see. If it turns out to be the BIOS, can I just flash it with a version that isn't retarded?

[agd5f]

I see. If it turns out to be the BIOS, can I just flash it with a version that isn't retarded?

The thread I linked to describes how to have the kernel fix up the mtrrs if the bios fails to set them up properly. Whether or not a new bios will fix the issue probably depends on the vendor and how windows behaves with regard to the mtrr setup.

[Poop Loops]

Cool, I'll take a look at it. Thanks.