You need to run "sudo update-grub" after editing the /etc/default/grub for your changes to take effect.
Please see the following AskUbuntu question for detailed instuctions using the grub file or an app called Grub Customizer. http://askubuntu.com/questions/54067/how-do-i-safely-change-grub2 -screen-resolution -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1093171 Title: /etc/default/grub references vbeinfo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1093171/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs