I reboot the system and at the grub display screen I do: e to get to the edit mode. On the line to boot linux I add nomodeset 1 and then ctl-x to boot with the options. Still I get the garbled screen. I have no way to get to a shell as root to do apt-get install firmware-linux-nonfree command.... Any suggestions on the options to the boot? Is 'grub' overriding the options? thanks, chuck