Unfortunately, the workaround mentioned above seems not actually to have helped. When I first tried it, I was able to use desktop effects for about an hour with no problems. I then rebooted, however, and X froze again within a minute of the desktop appearing. I haven't been able to reproduce the stable behavior.
I also noticed that X.org.log says "(WW) intel(0): Option "AccelMethod" is not used," so apparently this option is no longer valid, which explains why it didn't actually help as a workaround. Is there any other way to disable UXA acceleration in Karmic, or other thoughts on how we might work around this issue?
Unfortunately, the workaround mentioned above seems not actually to have helped. When I first tried it, I was able to use desktop effects for about an hour with no problems. I then rebooted, however, and X froze again within a minute of the desktop appearing. I haven't been able to reproduce the stable behavior.
I also noticed that X.org.log says "(WW) intel(0): Option "AccelMethod" is not used," so apparently this option is no longer valid, which explains why it didn't actually help as a workaround. Is there any other way to disable UXA acceleration in Karmic, or other thoughts on how we might work around this issue?