I have an: 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) in a Fedora 21 machine running Linux 4.0.4. While this is all generally working, the display has pauses where there should be fluid motion. Watching a video with mplayer for example, plays about a second or so, then pauses for .25 to .5 (just a guess) of a second and then continues playing. glxgears does the same thing. While it's reporting ~60fps the gears turn then stop then turn then stop. I see the same thing dragging windows across the screen or even just scrolling (GTK3) application windows. I'm using both the DVI and the VGA output of this card, FWIW. What additional information can I provide to help diagnose this problem? Cheers, b.
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