![[How To] Set Display brightness in Ubuntu 12.04 Login Screen in Hp Laptops](https://www.howopensource.com/wp-content/uploads/2012/11/grub.png)
Updated by Prasanna | Nov 27, 2012 | Error
If you have installed and running Ubuntu 12.04 on Hewlett Packard (HP) manufactured laptop like pavilion models, you may be facing this issue. Issue : Whenever you start your laptop and before landing in the Login screen, the display brightness may go Zero (i.e you... 