Just to chip in, this doesn't appear to be confined to the 8xxx series nvidia cards. I've seen this on G96 (Quadro FX 580), GT216 (Geforce GT 220) and on GF108 (GeForce GT 430). Not high-end cards by any stretch of the imagination, but all should be more than up to the task.
I've mainly encountered this on twinview setups with a pair of 1920x1200 screens. I can't recall if I've ever seen this on a single-monitor system as we don't have too many of those here. 290.10 doesn't help in any way on the one system I've tried it on. This affects 11.04, as well as Ubuntu derivatives (Mint 11 and 12 spring to mind). I'm not sure about 10.04. It isn't related to Unity or Gnome 3. I've seen this on both 11.04 and Mint 11 with Gnome 2, and Mint 12 with MATE. This seems 100% reproducible with MATE under Mint 12. Running 'compiz --replace' causes the problem every time. While that's not Ubuntu's problem, that might be a good place to start looking for clues. For now, the workaround is definitely to avoid running compiz. This means losing a bunch of window management functionality and the general feeling of smoothness that compiz usually provides, but that's better than crippling performance. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/877438 Title: Unity/compiz has sluggish performance on dual-head with nvidia driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/877438/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
