Almost solved, just need help with a service file!

Hey all,
For some time now my systemd sleep hook has stopped working (e.g. only killing my program and not relaunching it when waking up). Only now I have time to look into it, though, so I can't really say if any update caused this.
I had a custom sleep hook in /usr/lib/systemd/system-sleep/dwmstatus.sh, which killed my dwm-status program before going to sleep/suspend and started it again when waking up. It looked like this:
#!/bin/sh
case $1 in
pre) killall dwm-status
post) dwm-status
esac
exit
I've been looking into it and noticed the example on the Wiki (my previous script above was a direct copy of the old example) got updated, so I updated mine accordingly. It now looks like this:
#!/bin/sh
case $1/$2 in
pre/*)
echo "Going to $2, killing dwm-status"
killall dwm-status
echo "dwm-status killed"
post/*)
echo "Waking up from $2, starting dwm-status"
exec /usr/bin/dwm-status &
echo "dwm-status started"
esac
But that's not working either. (The echos are just here for debugging this). I first tried using just dwm-status to start it again, but it didn't work. Then I tried the full path without result too and now with exec I still am not getting anywhere. Can someone explain to me why it's not working anymore?
Last edited by Unia (2012-12-24 13:31:46)

Now that I have solved all the outstanding issues and integrated quite a bunch of new features into dwmst (rename of dwm-status) it's only this issue that needs to be resolved. I still can't get dwmst to launch again after suspend/hibernate.
I checked journalctl but it comes up without any errors whatsoever:
┌─[jente @ lappy ~] 20:07:40
└─■ sudo journalctl -b -u systemd-suspend
-- Logs begin at wo, 2012-10-31 12:43:25 CET, end at wo, 2012-12-19 20:08:36 CET. --
dec 19 20:08:10 lappy systemd-sleep[1174]: xset: unable to open display ""
dec 19 20:08:10 lappy systemd-sleep[1174]: Suspending system...
dec 19 20:08:19 lappy systemd-sleep[1174]: System resumed.
dec 19 20:08:19 lappy systemd-sleep[1174]: ERROR: could not open display
dec 19 20:08:19 lappy systemd-sleep[1174]: xset: unable to open display ""
Or is it that xset error?
EDIT: I just removed my script from /usr/lib/systemd/system-sleep to check the output, and I still get the xset error but not the ERROR line:
dec 19 20:12:12 lappy systemd-sleep[1329]: xset: unable to open display ""
dec 19 20:12:12 lappy systemd-sleep[1329]: Suspending system...
dec 19 20:12:21 lappy systemd-sleep[1329]: System resumed.
dec 19 20:12:21 lappy systemd-sleep[1329]: xset: unable to open display ""
So I guess that ERROR: could not open display is the error dwmst generates when it tries to launch it? Further investigation will have to follow, but in the meantime I'm open for pointers!
EDIT2: The ERROR line is not related to dwmst. I put some echo lines before and after killing and launching dwmst and the ERROR line appears after the echo's:
dec 19 20:16:57 lappy systemd-sleep[1443]: System resumed.
dec 19 20:16:57 lappy systemd-sleep[1443]: starting dwmst
dec 19 20:16:57 lappy systemd-sleep[1443]: started dwmst
dec 19 20:16:57 lappy systemd-sleep[1443]: ERROR: could not open display
dec 19 20:16:57 lappy systemd-sleep[1443]: xset: unable to open display ""
Last edited by Unia (2012-12-19 19:18:34)

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