After deleting this configuration (I had it for power saving) suspend / resume works, except after a login / logout I have the same screen issues as mentioned by Jan Schneider - also gdm will start with the wrong resolution.
I also noticed that the system seems to draw more power and the fan is louder after the resume. (I also had this issue before with the single core workaround)
Suspend / Resume is now working for me, too. The following xorg.conf configuration caused my system to still crash on resume:
Section "Device"
Identifier "Configured Video Device"
Option "DynamicClocks" "true"
Option "NoDri" "true"
EndSection
After deleting this configuration (I had it for power saving) suspend / resume works, except after a login / logout I have the same screen issues as mentioned by Jan Schneider - also gdm will start with the wrong resolution.
I also noticed that the system seems to draw more power and the fan is louder after the resume. (I also had this issue before with the single core workaround)