I've installed (and since deinstalled) the modified bios, but it enabled me to do some testing. The system was unstable, and would freeze hard every 3-5 minutes or so when in either sideport-only or uma-only modes. However: Graphics *seem* to work fine (either way, work much better) with things set either to Sideport only or UMA-only. Using sideport+uma caused massive corruption, as 'normal'.
Interestingly, although the BIOS states that there are 64mb of sideport ram, the system thinks I have 128mb when sideport-only is set in the bios. This seems to correlate with d4ddio's observation: > I see indications several places that theres only 64M of sideport VRAM, but > 384 == 128 + 256 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/556782 Title: [rs690m] Graphics corruption with ati x1200 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/556782/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp