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Trying to use a Live DVD to run Ubuntu 14.04.1, I get the "Monitor signal out of range" error.
I hit ctrl-alt-F1 to bring up the command line.
I do sudo nano /etc/default/grub and remove # from GRUB_GFXMODE and change it to 1280x1024 and overwrite the file.
I then sudo update-grub and get:

/usr/sbin/grub-probe: error: failed to get canonical path of /cow.  

I find that I could start in safe graphics mode, but that isn't available on Live DVD. I try to install it normally, but I can't see anything beyond the install screen when to move along the installation.

  • I didn't exactly understand how did you want to update grub on LiveDVD which is readonly medium. – Barafu Albino Aug 4 '14 at 17:22

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