10

I was trying to edit GRUB file at /etc/default/ for fixing the brightness issue.

But I am unable to do that as there is no option to save GRUB file after edit. This may be due to some permission issue.

How should I edit this file?

And issue I am trying to fix is: "display brightness problem with ubuntu 13.04"

Anwar Shaikh
  • 203
  • 1
  • 2
  • 8

1 Answers1

10

You need to open the file as root.

gksu gedit /etc/default/grub

On 13.04 or later you might have to first install gksu:

sudo apt-get install gksudo

See also https://help.ubuntu.com/community/RootSudo

kiri
  • 28,246
  • 16
  • 81
  • 118
Panther
  • 102,067