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After switching to Ubuntu 13.04 64bit, AMD proprietary drivers stopped working on my laptop with AMD/Intel hybrid graphics.
I tried installing older version of Intel graphics as described in this thread How do I get AMD/Intel Hybrid Graphics drivers to work?.
This solution works great with one monitor, but when I try to connect second one while using discrete card, my screen starts flickering and glitching very hard. It's hard to explain, seems like it tries to intersect two screens.
I noticed, that command
sudo aticonfig --set-pcs-str="DDX,EnableRandR12,FALSE" failed to deactivate RandR1.2, so there's no Display Manager in amdcccle. I tried to search a solution for disabling RandR, but found none working.
I had none of these problems on Ubuntu 12.10 64bit.
Any help is appreciated. Thank you.