1) Plugging in the cable after switching to VT1: the system freezes and the screen goes black, even without switching back to X
2) Plugging in the cable, running `sleep 30; xrandr -q` and then switching to VT1: screen goes black almost immediately, before the 30 seconds are over.
I guess that's not very helpful, either. I'll try the Netconsole thing this weekend when I have access to my second machine.
I tried both suggestions:
1) Plugging in the cable after switching to VT1: the system freezes and the screen goes black, even without switching back to X
2) Plugging in the cable, running `sleep 30; xrandr -q` and then switching to VT1: screen goes black almost immediately, before the 30 seconds are over.
I guess that's not very helpful, either. I'll try the Netconsole thing this weekend when I have access to my second machine.