*** This bug is a duplicate of bug 1766137 ***
https://bugs.launchpad.net/bugs/1766137
On several occasions, when I click on "Switch User" I would be directed
to a black screen with a mouse cursor where the mouse cursor may work in
a very lagging manner and nothing else seems to work(no keyboard
response). To get out of this situation, I needed to manually power off
my system and power it up again to boot the system up again. This
recovery procedure is bad for my system.
Sometimes this bad situation happens and sometimes I would successfully
be directed to the login screen to switch users successfully.
Any idea what is causing this issue or how I can fix this issue?
[Update:] On my next bootup, I re-tried using the "Switch User" button.
I got the same black screen and mouse cursor. But this time around, the
default Ubuntu screensaver or screen shield appeared ( after several
seconds of delay) instead of the background that I had set previously.
After pressing any keyboard key, the screen shield goes away and the
Login screen appears. I am able to login as myself or as another user.
It was mentioned here that this situation is a duplicate of bug #1766137
and in that report a fixed had already been issued. But I still
encounter this issue. There I like to reopen this issue.
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https://bugs.launchpad.net/bugs/1769221
Title:
"Switch User" fails, gives a blank screen with a mouse cursor.
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