Some additional comments. I never saw noisy widgets again since I use 0x77553311. But all the other glitches remain.
Then, I see random misbehavior of the whole system if I'm logged into X. For example, if I start an update (the Gentoo way, lots of compiling, lots of IO, lots of output), after some minutes the update process breaks with awkward errors such as segfaults. Then, in the syslog I see other non-related processes crashed as well. Looks like a thermal problem or bad RAM, but this only happens if X is started AND if I do all the update stuff using X (lots of scrolling involved, perhaps this causes a bug?). Memtest86+ didn't show any errors as well, and last night I rebuilt the hole system in a tty, without any of these issues. For me, these misbehaves / system crashes seem to be related to X! In the meantime, I downgraded to kernel 3.1.4, with the same patch applied (0x77553311). But the issues remain: Glitches and system misbehavior if X is used. Florian -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/840140 Title: Graphical corruption then black screen using an ATI Radeon 6790 card on boot To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/840140/+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