No problem, I'm just glad someone's trying to help :)
One little comment though: avivotool is not included in the binary radeontool package, I had to compile it from source.
Since I'm not sure which two cases you're interested in (I think the KVM switch is no longer the issue), I'm again attaching all three cases:
*_1screen: no external monitor, everything works
*_2screen: external monitor (directly connected): black screen
*_kvm: external monitor (connected via KVM switch): black screen
No problem, I'm just glad someone's trying to help :)
One little comment though: avivotool is not included in the binary radeontool package, I had to compile it from source.
Since I'm not sure which two cases you're interested in (I think the KVM switch is no longer the issue), I'm again attaching all three cases:
*_1screen: no external monitor, everything works
*_2screen: external monitor (directly connected): black screen
*_kvm: external monitor (connected via KVM switch): black screen