@madmed: so this card/driver combination seems to have issues with mutter anyway, but here are a few elements that can help to investigate the problem:
1. Can you provide some glxgears performance numbers? under both fglrx and the open source radeon driver; to see if something is obviously wrong in the configuration
3. You're saying that Gnome Shell doesn't work as well: do you have a bug report for that? is it the same symptoms or is there something more specific like crashers or errors on specific circumstances?
@madmed: so this card/driver combination seems to have issues with mutter anyway, but here are a few elements that can help to investigate the problem:
1. Can you provide some glxgears performance numbers? under both fglrx and the open source radeon driver; to see if something is obviously wrong in the configuration
2. Can you post some examples of the corrupted display you're getting with the radeon driver; does it looks like what is reported on https:/ /bugs.launchpad .net/unity/ +bug/641674, or http:// imagebin. org/117525?
3. You're saying that Gnome Shell doesn't work as well: do you have a bug report for that? is it the same symptoms or is there something more specific like crashers or errors on specific circumstances?