Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have an Acer laptop with a Intel GMA4500MHD graphic card, after the installation of Ubuntu from an alternate install cd I get only a black screen after the grub selection pages.

I tried something in this page and I still have the problem. I have tried with Debian testing and I have the same problem, it was alright on older Ubuntu and with debian Squeeze. I think that the kernel update includes some new drivers incompatibles with my graphic card.

Any suggestion?

Thank you very much-

share|improve this question

closed as too localized by Thomas Ward, Takkat, James Jul 10 '12 at 17:22

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

up vote 0 down vote accepted

Two suggestions. You may need to boot a live CD and mount your ubuntu install to make the edits. Assuming your install is on /dev/sda1

sudo mount /dev/sda1 /mnt

Now edit /mnt/etc/rc.local

gksu gedit /mnt/etc/rc.local

Add this line (avobe exit 0)

setpci -s 00:02.0 F4.B-0


If that fails, try appending your grub kernel (linux) line when you boot

Boot , when you see the grub menu, hit e to edit


If that works, add it to /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Then update grub

sudo update-grub
share|improve this answer
Thank you for the answer, If I start a liveCD I have the same problem, black screen, I try to install from alternate CD just for this issue so no solution on this way. I tried to make it with grub modification with no result, the problem persists, it is not the backlight, i think that it is a resolution problem. – Vaul Dec 9 '11 at 0:59
OK, you will have to try an older live CD so you can edit /etc/rc.local – bodhi.zazen Dec 9 '11 at 1:05
If I connect a screen with VGA connector I see the beautiful login screen, so I'm going to modify it just now. Thank you :D – Vaul Dec 9 '11 at 1:08
Great, once you find it, please post the solution for the benefit of others. – bodhi.zazen Dec 9 '11 at 1:11

(converted OP comment to answer)

I connected a screen with a VGA connector and now I see the beautiful login screen.

My solution indicates a hardware issue not a software problem.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.