Update:
Shut down the computer, cold re-boot: same orange streaky lines on panels.
Turned off visual effects completely (system > preferences > appearance): no more orange streak.
So I'm somewhat happy (though I would like to (have kept) keep some visual effects... :-/ )
tp.
Update:
Shut down the computer, cold re-boot: same orange streaky lines on panels.
Turned off visual effects completely (system > preferences > appearance): no more orange streak.
So I'm somewhat happy (though I would like to (have kept) keep some visual effects... :-/ )
tp.