Hi,
Any time that the PC goes into standby the screen goes monochrome below the height of the mouse cursor, I can sometimes infer where the mouse is by the colour displayed below the line, above the screen is as before, except sometimes there is a little bit of wraparound.
I have added the fix recommended here: https://forums.opensuse.org/showthread.php/514265-Graphics-freeze-computer-unresponsive-restarts?p=2772006#post2772006
Earlier I came across some linux posts on the web that recommended removing all the extra mouse cursor themes, as one or more of them does not play well with screensaver/lock. I had tried that earlier, and it seemed a bit better than before, but cannot find the instructions to do that.
Does anyone have any ideas how that is done?