I have an Acer Aspire 5740-5780 laptop with ubuntu 11.10. I don't have the more common problem of the black screen on boot. Rather, under System Settings..., in Screen, under Brightness, with the "turn off after" set to x number of minutes, the screen will indeed turn off at the designated time, but the screen will not come back when I press a key. However, I am able to shut and re-open the lid, then the screen will recover. Any ideas on how to fix to this?

  • I have posted a similar question here askubuntu.com/questions/69984/… – sarveshlad Oct 22 '11 at 20:32
  • Thanks Sarvesh. Your situation seems to have more to do with a brightness control malfunction. With my situation, it's about the display completely turning off. It's set to do this by default and it's supposed to. It just doesn't recover from a keypress or mouse movement. – Dan Taylor Oct 23 '11 at 23:53
  • Okay, somebody filed a bug-report for this at: link. The attached patch by kamel mostafa "gnome-settings-daemon" fixes the "backlight stuck off" problem in Ubuntu 11.10: This PPA supplies an installable gnome-settings-daemon package with the patch applied: link This PPA supplies an installable gnome-settings-daemon package with the patch applied: link – Dan Taylor Oct 24 '11 at 0:22
  • I'm also facing what you have mentioned here... this wasnt an issue in 11.04 for me – sarveshlad Oct 24 '11 at 2:57

I suggest you try a screensaver that works, like xscreensver. I had that problem on a laptop, and after installing Xscreensaver and configuring a screen saver, everything went fine. You can find instruction on how to uninstall gnome screensver and install xscreensaver here

Enable Screensaver In Ubuntu 11.10

Also, don't forget what they say: Activate it in startup program. That way, you will ensure it is always on, and the screensaver is always running. Plus, a screensaver is more pretty than a black screen ^__^

I hope this will help you like it did for me


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