Comment 22 for bug 869196

Ah, that damned bug (#860707). I'm waiting for it to be resolved too so I can try xorg-edgers again. I guess you could use ppa-purge to get rid of xord-edgers if you want to use unity-3d again.

The status for unity-2d above is "Fix Committed" which means they have committed the patch but not yet released it into the repositories (I've no idea why it would take this long; maybe someone has forgotten about it).