Where is the best place to put in a bug report?
Here's what happens:
Install new driver; reboot. System comes up with both monitors mirrored and at same resolution (this is normal);
Log in and run Catalyst Control Center. Set to multiple monitor desktop, set order, set each monitor to proper resolution (they are different sizes) rotate leftmost monitor 90 degrees (it is portrait). OK.
Both displays go black, then come up corrupted - large black areas, flickering, etc (this is new) Can see enough to click "OK" on the "Accept new settings" countdown window. Reboot.
Displays come up in proper order, orientation, and resolution. (normal); Log in.
Displays go black. Rightmost display shows corruption (little blocks of pixels scattered across black screen) then both displays come up as expected. Everything is normal less the background image scaling (which I think is a GNOME thing anyway - and has been that way for a couple of months)
Run any program that is OpenGL (tried glxgears and Steam) Display instantly locks. Mouse freezes, no program updates (e.g. clock doesn't advance, etc) Machine can be accessed vi ssh and rebooted.
Reverting to the previous beta of May 2013 restores functionality.
This is Ubuntu 12.04 LTS, Radeon HD 7870. Other specs (and attempts at troubleshooting) avail on request.
Is this the best place to report bugs like this?