On Sb, 13 iul 19, 04:14:52, ho...@rumormillnews.com wrote: > > > Thanks -- the brand is AOC, connected via VGA cable
I've seen such interesting effects when a VGA cable was not connected properly. You might want to check the cable and connection at both ends. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser
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