Doing the workaround worked! Here is what I did
1) ALT+F1 (to get to console) 2) stopped gdm 3) unloaded modules radeon drm 4) reloaded modules radeon drm 5) ALT+F7 to get to xwin .. logout 6) start gdm
The order is a little clumsy .. but it just worked after I did this. So the problem is how the radeon drm module is being loaded.
Doing the workaround worked! Here is what I did
1) ALT+F1 (to get to console)
2) stopped gdm
3) unloaded modules radeon drm
4) reloaded modules radeon drm
5) ALT+F7 to get to xwin .. logout
6) start gdm
The order is a little clumsy .. but it just worked after I did this. So the problem is how the radeon drm module is being loaded.