Oops. I just realised that this will be tricky, if not impossible with a black screen. Try booting with the radeonmodeset=0 parameter or booting to a text console, or booting normally then switching to a virtual console via CTRL-ALT-F1 (or F2-F6). You can switch back to the desktop with CTRL-ALT-F7.
Oops. I just realised that this will be tricky, if not impossible with a black screen. Try booting with the radeonmodeset=0 parameter or booting to a text console, or booting normally then switching to a virtual console via CTRL-ALT-F1 (or F2-F6). You can switch back to the desktop with CTRL-ALT-F7.