Resume Error

[Sukhdeep Singh]

Using Ubuntu13.04 on my Dell laptop and screen brightness controls not working.
Tried the solution by following below steps :

1. Open a terminal (Program - Accessories - Terminal)
2. Type in "sudo gedit /etc/default/grub" (without the "")
3. Find the line that says: GRUB_CMDLINE_LINUX="quiet splash"
4. Edit it so it says: GRUB_CMDLINE_LINUX="quiet splash acpi_backlight=vendor"
5. Save and exit
6. Run the command "sudo update-grub" (again without quotes of course)

Brightness controls worked  But the system started hanging.
So i reverted back to the previous settings and hanging problem solved
but brightness control problem still exists.
Any other Solution?

Also
Ubuntu 13.04 gives a warning on waking up suspending
saying "Resume error - 19"
No relevant solutions found on internet.
Please do post solutions for this also




--
Sukhdeep Singh
[DD]-  http://sukhtaaj.wordpress.com