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Old 11-21-2010, 02:22 PM   #1
sixsmith
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Registered: Jun 2008
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Screen shuts off after 10 minutes-- NOT screensaver, not Power Options-- ubuntu 10.04


Watching a video, listening and working, every time I come back to it I see the screen has gone black, I have to jiggle the mouse. I estimate the shutoff to come after ~10 minutes. I have set the screen saver to wait 90 minutes, and the Power Options to NEVER shut off the screen. It still happens.
 
Old 11-21-2010, 03:57 PM   #2
smoker
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If you are running gnome and compiz check the screensaver settings in both. One overrides the other.
 
Old 11-21-2010, 04:09 PM   #3
stress_junkie
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Registered: Dec 2005
Location: Massachusetts, USA
Distribution: Ubuntu 10.04 and CentOS 5.5
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Sometimes the Linux kernel will shut off the screen. I used to have this problem in other distros but not in Ubuntu 10.04. Here is some information about disabling the Linux kernel power save for the screen.

http://www.cyberciti.biz/tips/linux-...ing-blank.html

Note the line to add to ./.xinitrc. Ubuntu 10.04 doesn't have this file by default so you may have to create it or use the system xinitrc or something similar. Since I don't have this problem with my current configuration so I cannot find the specific answer for Ubuntu 10.04.

Note that this setting is independent of X or Gnome. It is a Linux kernel feature.

Last edited by stress_junkie; 11-21-2010 at 04:10 PM.
 
Old 11-23-2010, 04:09 AM   #4
rylan76
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Registered: Apr 2004
Location: Potchefstroom, South Africa
Distribution: Fedora 17 - 3.3.4-5.fc17.x86_64
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Have you tried using a recent xscreensaver instance rather than the stock screensaver?

Also, try doing

Code:
ps -Af | grep screen
and seeing if anything interesting pops up. I had this on an older version (I think Fedora Core 3 or somesuch) where in KDE I explicitly turned off the screensaver, but it was STILL running - I had this same problem you describe here - suddenly finding the screen switching off when watching a video. Turned out I had to manually kill the screensaver process. But I still wanted a proper screensaver that heeded my time selections, so I got xscreensaver. I compiled and installed that and everything was fine.
 
  


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