How to Fix Black Screen Problem Before Login on HP Pavilion Laptops running Ubuntu 12.04

Hello Linux Geeksters.

This issue occurs on Ubuntu 12.04, running on Hewlett Packard (HP) Pavilion laptops.

If you get a black screen, whenever you start your laptop and before getting the Login Screen, this article may help you.

To fix the black screen problem, do this:

$ gksudo /etc/default/grub

Find the GRUB_CMDLINE_LINUX=” “ line and modify it to look like this:

GRUB_CMDLINE_LINUX=”acpi_osi=Linux acpi_backlight=vendor“

Update Grub:

$ sudo update-grub

After the reboot, your back light problem should be solved.

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6 comments on “How to Fix Black Screen Problem Before Login on HP Pavilion Laptops running Ubuntu 12.04
  1. Eric Huang says:

    I just bought a hp 2000 with intel i3, got the same issue. After tried the change in rescue mode, I can successfully launch Ubuntu. Really helped me!

    • David says:

      Hi!, a little linux noob here, I have this very same laptop model and I’m having a hard time installing ubuntu, dont know if it is getting the UEFI right (with the secure boot or legacy stuff) or the screen problem, if you could help me a little it would be great!, write me an email if you can, and also merry christmas!

  2. Tim says:

    I have a HP Pavilion m6. I tried this fix but it didnt seem to work. Im assuming the “vendor” part of the line needs to be substituted with HP or something? Thats my problem, Im not sure what to insert there. Sorry for my ignorance, Im a newbie with Linux. Any help would be appreciated. Thanks.

  3. Thanks, this worked like a charm.
    I just edited the line GRUB_CMDLINE_LINUX, updated the grub boot and rebooted my notebook (HP Pavilion). It worked!

    Ps: This is confirmed to work with Ubuntu 13.02 with kernel 3.8.0-30-generic

  4. halim says:

    Maaaaaan thank you so much !!!
    So much trouble with my HP laptop, solved in 2 minutes.
    Think this might be worth a trial for non debian /Ubuntu users with the same Problem too.
    God bless you

  5. DMC says:

    Thanks! That was driving me nuts.

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