> I've mounted this monitor sideways in an arcade cabinet, and I've set the Ubuntu
> displays control panel to rotate counterclockwise, so the Ubuntu desktop shows up
> properly - tall and narrow. But when I start a game in Mame with GLSL turned on, it's
> choppy. If I go into the Ubuntu displays control panel and set the rotation back to
> normal, then Mame runs nice and smoothly (though sideways).
Ahhh. Yeah, Ubuntu's desktop tends to draw itself with the video card even when games are running, which tends to decrease the performance of the games. I'm not clear why rotating the desktop makes any difference though, that's kind of strange 
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Re: GLSL is choppy on Skylake PC running Linux
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