subprocess.CalledProcessError: Command '['xprintidle']' returned non-zero exit status 1

[Braveatom]

Hi there, I'm trying to get your app to run on a relatively fresh install of 15.04. I've added the dependences, but get the error below after running 'python3 sleep_inhibit'. Any ideas what I'm doing wrong?

Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
couldn't open display
Traceback (most recent call last):
  File "sleep_inhibit", line 39, in <module>
    exit(main())
  File "/home/home/sleep-inhibit-1.0.0-beta/sleepinhibit/startup.py", line 76, in main
    if not dependencies_are_satisfied():
  File "/home/home/sleep-inhibit-1.0.0-beta/sleepinhibit/startup.py", line 31, in dependencies_are_satisfiedyapayne/Web2Executable/issues
    util.cmd_output(['xprintidle'])
  File "/home/home/sleep-inhibit-1.0.0-beta/sleepinhibit/util.py", line 26, in cmd_output
    return subprocess.check_output(*args, **kwargs).decode('utf-8').strip()
  File "/usr/lib/python3.4/subprocess.py", line 620, in check_output
    raise CalledProcessError(retcode, process.args, output=output)
subprocess.CalledProcessError: Command '['xprintidle']' returned non-zero exit status 1

Edit from dev

The ultimate solution here is to have a way to inhibit sleep which doesn't depend on having an X session. Any contributions along that front would be welcomed.

[mssever]

Hi, could you tell me what you get when you type xprintidle into the command line? Also, it appears that you're using Mir instead of X windows. If so, I don't know whether X utilities will work with Mir.

[Braveatom]

Sure, will do - I wont be at the machine for a couple of hours. I have realised that I said it was Ubuntu 15.04 - its not, its 15.10, sorry.

[Braveatom]

Heres the output from that - "couldn't open display"

Its odd, I haven't knowingly installed anything out of the ordinary - fresh install, Netatalk, Avahi, Plex - pretty much it - its a back up machine and file server.

[mssever]

If this is a server, and you can't open the display, are you logged in to a graphical session, or to a CLI-only session? Sleep Inhibitor depends on having a graphical interface available; many parts of the program will fail absent that.

I may look into how to make Sleep Inhibitor work without a GUI, but that would be a non-trivial amount of work and could take a while.

[mssever]

I've got a partial fix for this issue. Would you mind testing it? Go to this branch and click the green button labeled Clone or download.

If I've understood your situation correctly, you should receive an error message which diagnoses the problem, and you should be able to know what to do about it.