I'm attempting to use this to turn on a monitor when a Passive Infrared sensor detects movement. This code works when run interactively (however the screen won't actually go to sleep on it's own, I had to test it by using xset over SSH). When I run it as a service, I get "Cannot open display".
What needs to be done to access the display as a service running as root?
2015-06-28 20:33:47,765 INFO Waking from sleep
2015-06-28 20:33:47,771 ERROR Traceback (most recent call last):
2015-06-28 20:33:47,773 ERROR File "/usr/local/bin/pir/pir.py", line 51, in MOTION
2015-06-28 20:33:47,775 ERROR d = dpms.DPMS(":0") # to use the current display, or alternatively DPMS(":1")
2015-06-28 20:33:47,777 ERROR Exception
2015-06-28 20:33:47,779 ERROR :
2015-06-28 20:33:47,781 ERROR Cannot open display
I'm attempting to use this to turn on a monitor when a Passive Infrared sensor detects movement. This code works when run interactively (however the screen won't actually go to sleep on it's own, I had to test it by using xset over SSH). When I run it as a service, I get "Cannot open display".
What needs to be done to access the display as a service running as root?
2015-06-28 20:33:47,765 INFO Waking from sleep
2015-06-28 20:33:47,771 ERROR Traceback (most recent call last):
2015-06-28 20:33:47,773 ERROR File "/usr/local/bin/pir/pir.py", line 51, in MOTION
2015-06-28 20:33:47,775 ERROR d = dpms.DPMS(":0") # to use the current display, or alternatively DPMS(":1")
2015-06-28 20:33:47,777 ERROR Exception
2015-06-28 20:33:47,779 ERROR :
2015-06-28 20:33:47,781 ERROR Cannot open display