Screen remain off after returning from suspend

[Mayank Suman]

This bug occured :-
When my Dell N5010 got suspended on battery. After sometime I connected AC adapter and then pressed power button to wake up my system. The screen remained black.

[Mayank Suman (mayanksuman)]

I have also installed 'laptop-mode-tools' for battery management. Is 'laptop-mode-tools' causing the problem?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[cengopon (pognonec)]

To try to fix that regresion, I tryed the proposed solution:
http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-not-working-bug
But to no avail on my Dell Inspiron N5010 Ubuntu 12.04 (while suspend worked fine on 11.10).

[Mayank Suman (mayanksuman)]

found this solution from "man pm-suspend"

On some hardware putting the video card in the suspend state and
       recovering from it needs some special quirk handling. With the
       --quirk-* options of the pm-suspend and pm-suspend-hybrid commands you
       can select which quirks should be used.

       If pm-suspend, pm-hibernate, or pm-suspend-hybrid are invoked without
       any commandline parameters, they will try to grab the correct quirks
       from the internal quirk database.

       --quirk-dpms-on
           This option forces the video hardware to turn on the screen during
           resume. Most video adapters turn on the screen themselves, but if
           you get a blank screen on resume that can be turned back on by
           moving the mouse or typing then this option may be useful.

[Mayank Suman (mayanksuman)]

My video card is of ATI Radeon 5400 series model and my laptop model is Dell Inspiron n5010.

[citosid (abraham-sustaita)]

Have anyone found any solution?

This is also affecting me. But in my case not only when I woke up from suspend, also when it goes back from the black screensaver.

[Mayank Suman (mayanksuman)]

Please give information about your system(model and ubuntu version) and graphics card.

Run uname -a & post it....

[Eric Kelly (eric-kelly85)]

I am having the same issue with a Dell N5010.

Linux noname 3.5.0-15-generic #23-Ubuntu SMP Mon Sep 24 20:37:06 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[penalvch (penalvch)]

Mayank Suman, could you please execute the following via a terminal in order for the necessary debugging information to be attached:
apport-collect 1001315

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]