Hi, > > xtrlock: "Cannot open display" when called from /lib/systemd/system-sleep
It is likely that the DISPLAY variable is being masked from the final xtrlock binary. $ DISPLAY=":0.0" su myusername -c "xtrlock" & Can you try: $ su myusername -c "env DISPLAY=:0.0 xtrlock" & … or similar? Regards, -- ,''`. : :' : Chris Lamb `. `'` la...@debian.org 🍥 chris-lamb.co.uk `-