I recently started running into the same problem. In terms of differences from what was posted before:
- I was using the FGLRX driver. I've uninstalled it -- I'll post back if that solves my problem.
- alt-tab does work
- visual effects are set to "none"
- logging in and logging out may or may not fix the problem
- Some app (I'm not sure which) gave a warning "GtkMenu failed to grab the pointer"
I recently started running into the same problem. In terms of differences from what was posted before:
- I was using the FGLRX driver. I've uninstalled it -- I'll post back if that solves my problem.
- alt-tab does work
- visual effects are set to "none"
- logging in and logging out may or may not fix the problem
- Some app (I'm not sure which) gave a warning "GtkMenu failed to grab the pointer"