I have seen something similar. When I use Ctrl-Alt-F1 to switch to a console, the monitor goes blank. When I use Ctrl-Alt-F7 to go back to X, it remains black. I don't think the system is crashing (maybe just the card), because ctrl-alt-del will reboot the system.
When I comment out the "Load dri" line in xorg.conf, things work properly.
This only happens when I have more than 1 Radeon 7000 card in the system. When I have 1 card installed, things work, even with the 'dri' loaded.
I have seen something similar. When I use Ctrl-Alt-F1 to switch to a console, the monitor goes blank. When I use Ctrl-Alt-F7 to go back to X, it remains black. I don't think the system is crashing (maybe just the card), because ctrl-alt-del will reboot the system.
When I comment out the "Load dri" line in xorg.conf, things work properly.
This only happens when I have more than 1 Radeon 7000 card in the system. When I have 1 card installed, things work, even with the 'dri' loaded.