My Thinkpad T60 with an ATI Radeon Mobility X1400 running Ubuntu 10.04 had the same problem: The screen was stuck with vertical lines, and a double VT switch (Ctrl-Alt-F1, Ctrl-Alt-F7) was needed to get the screen back.
The fix in #7 helped for me. Thank you!
My Thinkpad T60 with an ATI Radeon Mobility X1400 running Ubuntu 10.04 had the same problem: The screen was stuck with vertical lines, and a double VT switch (Ctrl-Alt-F1, Ctrl-Alt-F7) was needed to get the screen back.
The fix in #7 helped for me. Thank you!