Comment # 20 on bug 954108 from Tony Mechelynck

(In reply to Bob Goddard from comment #19)
> This happens with NVidia driver as well and is very random.
> 
> The only iffy solution I have found is to run "unclutter -reset -root -grab
> -idle 1 -visible", wait a second or two then move the mouse pointer and see
> if it comes back. You may have to do this a few dozen times before it
> appears.
> 
> This bug has been in place since at least 13.1 and affects all distros.

So we have several solutions:
��� the above (does it have to be run from an X terminal or is it OK in a
pure-text console, e.g. when seeing the X login form but not yet replying to
it)? I haven't yet tested it, I shall at next reboot. (BTW unclutter wasn't yet
installed on my system; I just installed it.) A few dozen times? We-e-ell���
��� restarting X, e.g. "systemctl try-restart display-manager" which can be run
from /dev/tty2 while the X login form is up; see also comment #16;
��� setting fbdev as the driver instead.

On my system this appears on 42.1 but on 13.2 and before it didn't. I hope that
a solution will be found even if fbdev works for me.