Freeze when lid is closed or when screen locks from inacivity, Catalyst 13.12, Ubuntu
Whenever I select the iGPU, then after a reboot, I get my screen freezing (moveable cursor, but nothing clickable etc).
On Ubuntu 13.10, switching to the tty and back resolves this, but on 12.04 LTS a restart is needed.
This does not happen when the dGPU is active selection.
Is this a known bug, and anyone any idea any way to fix?
I've tried a host of things, from DPMS Off in my xorg.conf, to aticonfig ---services-off.
I'm using AMD Catalyst 13.12. There don't seem to be any obvious errors about the freeze in the logs.