This is a duplicate of this bug report filed at launchpad:
When the computer is idle, the screen blanks automatically after ten minutes. It seems to be a screensaver because it returns to the normal state when I move the mouse or press a key.
As suggested on launchpad, the following command temporarily fixes the problem until the next reboot:
xset s 0 0
Please refer to the launchpad link above for more details.
Sorry, this is my first bug report. Please feel free to change the component and other details. I wasn't sure what I should enter because I don't understand the options offered.
If you are a developer, please fix this bug! No one on Launchpad wants to fix it.
I am also available by email if you need more information. I'll be happy to provide any log/ config file/ other info you need. I will try to make the fixing process as easy as possible for you. Please help!
(In reply to comment #1)
> If you are a developer, please fix this bug! No one on Launchpad wants to
> fix it.
> I am also available by email if you need more information. I'll be happy to
> provide any log/ config file/ other info you need. I will try to make the
> fixing process as easy as possible for you. Please help!
Here is my email address:
marion (döt) zepf (ät) gmail (döt) com
I'm not sure whether it is publicly visible next to my post, so I though I'd give it explicitly.
I don't see any X bug described here or in the Ubuntu report - the X server
has always defaulted to screen blanking after a timeout.
If you previously had UI to control it, and that's not working after an
upgrade, then that's a bug in GNOME, KDE, or whatever provides that UI.
Thanks Alan. To my knowledge, Ubuntu actually has _never_ had a UI to control this--screen blanking has always been disabled before. The UI only allows the user to configure the time period for powering off the display. Now it seems that screen blanking is mysteriously enabled on some machines in 12.10.
Other than with xorg.conf or xset, how might the distro be disabling this? I wasn't able to find any override anywhere. I am guessing that the override is not working in some corner case.