Every now and then, xscreensaver dies. When it does, my session unlocks and won't lock until I restart it. Is there a way to automatically detect that xscreensaver has died, restart it, and lock the session?


Instead of starting xscreensaver directly, use a wrapper script.



while :
   $prog &

Run this script as you would xscreensaver, i.e. in the background, launched from .xinitrc or equivalent. If xscreensaver dies, this script will notice and immediately restart it.

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  • To make this work properly, I had to add xscreensaver-command -activate after launching the program. Otherwise, if xscreensaver dies in the middle of the night, it will restart, but it won't activate. – kainaw Sep 8 '14 at 16:48

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