Hello everyone,
I have a machine running Ubuntu 17.04 (desktop version) on a Dell Optiplex 5050 which needs to run a long shell script (doing some machine learning runs) overnight. I've turned off suspend via Unity's "power management" control panel but it looks as though the machine still goes to sleep after being left alone for an hour. I wonder if anyone has any suggestions as to what's going on?
..Adrian -- Dr Adrian F Clark WEB: http://privatewww.essex.ac.uk/~alien/ EMAIL: alien/at/essex.ac.uk TEL: +44 1206 872432 RADIO: M0PDF PAPER: Comp Sci & Elec Eng, University of Essex, Colchester, CO4 3SQ, UK "The great tragedy of science: the slaying of a beautiful hypothesis by an ugly fact" -- Huxley
On 12/10/17 10:28, Clark, Adrian F wrote:
Hello everyone,
I have a machine running Ubuntu 17.04 (desktop version) on a Dell Optiplex 5050 which needs to run a long shell script (doing some machine learning runs) overnight. I've turned off suspend via Unity's "power management" control panel but it looks as though the machine still goes to sleep after being left alone for an hour. I wonder if anyone has any suggestions as to what's going on?
Sometimes there are different programs that can trigger sleep or shutdown. Have a look at any power programs and any screensavers - sometimes screensaver can trigger a shutdown or sleep. It might be worth looking at any tasks that are running and look for any power managers or screensavers.
If you can't find anything else to tweak/turn off, there is a program I think called Caffeine which is designed to disable a screensaver/sleep for a while. There may be other similar programs that do the same job.
I would say, are you sure it's going to sleep? Sometimes screensavers turn off the screen hardware but the processor remains running. Could that be what's happening? If that is happening, moving the mouse should make it wake up, whereas waking from sleep would usually require pressing the power button to wake-up.
Good luck. Steve
On 12/10/17 15:31, steve-ALUG@hst.me.uk wrote:
On 12/10/17 10:28, Clark, Adrian F wrote:
Hello everyone,
I have a machine running Ubuntu 17.04 (desktop version) on a Dell Optiplex 5050 which needs to run a long shell script (doing some machine learning runs) overnight. I've turned off suspend via Unity's "power management" control panel but it looks as though the machine still goes to sleep after being left alone for an hour. I wonder if anyone has any suggestions as to what's going on?
Sometimes there are different programs that can trigger sleep or shutdown. Have a look at any power programs and any screensavers - sometimes screensaver can trigger a shutdown or sleep. It might be worth looking at any tasks that are running and look for any power managers or screensavers.
If you can't find anything else to tweak/turn off, there is a program I think called Caffeine which is designed to disable a screensaver/sleep for a while. There may be other similar programs that do the same job.
I would say, are you sure it's going to sleep? Sometimes screensavers turn off the screen hardware but the processor remains running. Could that be what's happening? If that is happening, moving the mouse should make it wake up, whereas waking from sleep would usually require pressing the power button to wake-up.
Follow up.
I don't have Unity on my version of *buntu, but from what I recall this looks like how to access the power settings. http://mygeekopinions.blogspot.co.uk/2011/08/how-to-access-power-management-...
I think the default screensaver is called Light-locker and that it can trigger shutdown and/or sleep too. An alternative screensaver is XScreensaver. Have a look if either of these is installed and then hunt for their settings. If you have xscreensaver installed, you can get to the settings via
xscreensaver-command -prefs
I believe you can get to light-locker's settings via command
light-locker-settings.
Good luck
Steve
-
Clark, Adrian F -
steve-ALUG＠hst.me.uk