when I open new openbox session in Xephyr, the screen goes blank after 10 minutes of inactivity.

How can I disable this ?

I tried this command:

xset -dpms s off

but get following error:

server does not have extension for -dpms option

1 Answer 1


It's probably something like a screen saver or locker, not dpms. Try just xset s off without any -dpms.

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