Hi Nikolaus, Thanks for your report.
On Wed, 2023-07-12 at 18:38 +0100, Nikolaus Rath wrote: > It seems that running xss-lock as `xss-lock -- > session=${XDG_SESSION_ID}` works around this problem. That's correct, you either need a working logind session (which your "Error getting session" suggests you either don't or you are launching xss-lock in a way which doesn't find it properly) or you must use this option to tell xss-lock the session. I don't know enough about gnome-flashback to know if it is supposed to have a working logind or not or how one should launch xss-lock to properly use it if it does. Ian.