[SOLVED] xset dmps force off doesn't work in cron

howandsen · 08-14-2016, 04:26 AM

sleep 1
xset dpms force off

I add two lines above to the script, and manually run it, it works as I expected.
But when the script runs by cron, the "xset dpms force off" doesn't work.
anyone had an idea?

ondoho · 08-14-2016, 05:01 AM

afaik, cron does not use any environment variables.
so,
a) you need to use the full path to the executable
b) have to tell xset what $DISPLAY is set to
c) is cron running as root? might have to sudo to normal user.

edit:
in retrospect, this seems like an x-y-problem to me.
what are you really trying to accomplish here?

howandsen · 08-14-2016, 11:24 PM

Quote:

Originally Posted by ondoho

b) have to tell xset what $DISPLAY is set to

hi, ondoho,

Code:

DISPLAY=:0 xset dpms force off

works just fine. thank you so much!

ondoho · 08-15-2016, 01:07 PM

glad to be of help!