Thanks for the information. This is what is still happening on my machine.
the icons on my primary monitor disappeared, also the task bar.
I got the task bar to come back.
I got the standard icons to re appear.
I though I lost the desktop icons on the primary display. The secondary display icons were there.
In Nemo, in "Desktop", all the files showed, but only the secondary displayed.
I moved the files and then they reappeared on the primary display.
Bottom line: try the various work arounds above to see what will work for you and your situation.
Thanks for the information. This is what is still happening on my machine.
the icons on my primary monitor disappeared, also the task bar.
I got the task bar to come back.
I got the standard icons to re appear.
I though I lost the desktop icons on the primary display. The secondary display icons were there.
In Nemo, in "Desktop", all the files showed, but only the secondary displayed.
I moved the files and then they reappeared on the primary display.
Bottom line: try the various work arounds above to see what will work for you and your situation.