When I switch from X to VT 1-6 all characters display as blocks and the keyboard goes into raw mode. After using C-M-SysRq to reset the keyboard I can log in and type commands blindly. Switching back to VT 7 shows only block characters, even though X is still running. I have tried running mode3 to reset the display to no avail. I end up having to restart X just to get a usable shell. Geordie.