gnome-session-xmonad
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gnome-panel doesn't show up on Ubuntu 20.04
Just upgraded to Ubuntu 20.04. After logging in, xmonad functions as expected, but gnome components are not visible. gnome-panel appears to be launched and in the process list, but not visible. It can be seen if it is killed and reloaded though.
Further detail... I think the desktop may be occluding the panel. If I reload it, and load other apps, then lock the screen and come back, everything is still running but not visible. Furthermore the lockscreen background is still visible on the main screen (I have a two screen setup), and it disappears (underneath?) the lockscreen background when I move the mouse to that screen. I can open new windows and they are visible, but have to kill the old ones and relaunch to see them again.
This does seem to be an issue with the desktop drawing over things like panels.
xkill
ing the desktop temporarily makes those things visible, but then gnome-flashback
restarts and draws over everything
Update: the fix, per https://github.com/regolith-linux/regolith-desktop/issues/276#issuecomment-625851388 is
gsettings set org.gnome.gnome-flashback root-background true
gsettings set org.gnome.gnome-flashback desktop false
```