Ubuntu
linux package

  1. Bug #1049630
  2. Comment #42

Comment 42 for bug 1049630

Revision history for this message
In , Stillcompiling (stillcompiling) wrote :

(In reply to comment #38)
> Since this bug was reported over a year ago and no real progress has been made
> in fixing it, may I ask a knowledgeable person what the last working version of
> the code was, before this bug was introduced? Is there any way to create a
> "radeon-unsupported" module for those of us who have chipsets X.org doesn't
> plan to support with their newer versions?

The simple answer is that (afaik) this particular hardware set of hardware has had trouble since kernel mode-setting was introduce. There is not going to be a git bisect-able place where the problem started happening.

...

I do have a question for devs... I have been all over the initialization code and I cannot find a place where the sideport RAM is treated as distinct from the UMA "vram". Is this stuff set up by the atombios? Is there a way to see what hardware addresses ranges are assigned? Is there a way to fix the GART (table) if the bios is setting up overlapping or otherwise broken addresses for GTT, UMA and sideport vram?