Created attachment 736558 [details]
Screenshot dialog "unexpectedly left the panel"
When I log into X, xfce4-panel shows a pile of overlapping pop-ups saying "Plugin [..] unexpectedly left the panel" — screenshot attached — that force me to either
a) click "Execute" multiple times
b) do "pkill -9 xfce4-panel && xfce4-panel &" on a terminal
If that could be solved, that would be fantastic.
Thanks and best
Well, you could try removing your configs (~/.config/xfce4) for a start. I know that historically there were cases when some setups were broken by upgrade and required hard reset.
I renamed ~/.config/xfce4 now, remade the config using GUI tools and logged in and out multiple times. The "Plugin [..] unexpectedly left the panel" pop-ups still show, once I add items from plugins to the panel, e.g. Battery Monitor from xfce-extra/xfce4-battery-plugin.
Check your session logs (~/.xfce4-session.verbose-log) for any crashes. If you're using systemd, check coredumpctl.
Created attachment 736777 [details]
(In reply to Michał Górny from comment #3)
> Check your session logs (~/.xfce4-session.verbose-log) for any crashes. If
> you're using systemd, check coredumpctl.
No systemd, file ~/.xfce4-session.verbose-log seemed old and after deletion is not being re-created. The pre-deletion version said something about the child process restarts ("disconnected") as expected. I have attached xfce4-panel output, if that helps.
I'm afraid I have no clue what else could be wrong. Possibly look into your homedir for other session logs.