Please note that this is largely off the top of my head and I didn't test
this thoroughly...
That said to install do the following:
1. During boot hold down the left shift key to get the GRUB boot menu to show
2. Press the 'e' key to edit the boot parameters. Using the cursor keys of
your keyboard scroll down to the line that starts with "linux" and go to the
end of that line.
3. Add the boot parameters "nomodeset xforcevesa" without the quotes. As you
type, it will wrap to the next line on the screen and show a backslash
character at the end of the previous line. That's fine. Press Ctrl+X or F10
to continue to boot.
After installing it the system won't boot, but you can use a live cd with
chroot to fix this. Use the above directions to boot from the Trisquel live
cd again.
Then from the live CD open a terminal and run:
sudo mkdir -p /mnt/chroot
Then mount the partition you installed Trisquel to:
sudo mount /dev/sda1 /mnt/chroot
Next we need to bind hardware with new chroot environment. The next commands
will make sure that connected hardware works otherwise update-grub may not
function properly.
Run:
sudo mount -o bind /proc /mnt/chroot/proc
sudo mount -o bind /proc /mnt/chroot/dev
Now enter the chroot environment:
sudo chroot /mnt/chroot
Assuming your not booting in UEFI mode you can put "nomodeset xforcevesa"
into /etc/default/grub. To open the file for editing, run:
gksudo gedit /etc/default/grub
locate the following line and put xforcevesa between the quotes:
GRUB_CMDLINE_LINUX_DEFAULT="nomodeset xforcevesa"
save and exit when done, then run the following for the change to take
effect:
sudo update-grub
If everything worked right you should be able to reboot now and the system
will boot without the 3d aceelerated graphics driver. In theory that is
probably what is causing the problem between the two releases.
If anybody else has another idea as to what might be causing the problem
speak up!
