On Wed, 14 Dec 2016, m.roth at 5-cent.us wrote: > Ok, I've got a user, I just built him a C 7 machine. The new one has an > ATI card; the old had an NVidia card. I got it to use the radeon driver, > so it looks ok (he has a very wide screen). However... he has a program > that renders a molecule (which you see as many connected lines, in various > colors). However... it used to display it against a black background, and > suddenly, it's a transparent background, showing what's under that window. > > Anyone got any ideas about that? I'll gamble on: export XLIB_SKIP_ARGB_VISUALS=1 jh