I was working on an aunt's 64-bit desktop which, like my 64-bit netbook,
could not upgrade smoothly to 6.0. I ended up reinstalling using a ISO CD and
keeping the /home partition unformatted. After a reboot, however, instead of
seeing the GRUB menu list (the system is a multi-boot), I just saw the
monitor display a "frequency out of range" message.
The way to make the menu visible again is to boot into Triquel (or whichever
GNU/Linux distro you have installed, you may have to press the UP/DOWN arrow
keys blindly and hit ENTER a few times) and run: gksu gedit /etc/default/grub
You then change the lines:
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
to:
GRUB_HIDDEN_TIMEOUT=10
GRUB_HIDDEN_TIMEOUT_QUIET=false
also uncomment the line:
#GRUB_GFXMODE=640x480
This saved me a lot of stress and hopefully it does for you too.By the way,
reinstalling 6.0 over 5.5 worked like a charm and none of the /home data was
lost.
