328781 2013-12-14 02:25:26 +0000 Tearing Prevention (VSync) "Automatic" setting does not work with NVIDIA driver 2013-12-17 23:57:59 +0000 1 1 4 Plasma kwin general 4.11.4 Arch Linux Linux RESOLVED DUPLICATE 322060 NOR minor --- 0 luke kwin-bugs-null 0 oldest_to_newest 1418378 0 luke 2013-12-14 02:25:26 +0000 When the "Tearing Prevention (VSync)" setting is set to "Automatic" when using the nvidia binary driver, I get screen tearing (on a GTX 760). If I set it to "Full scene repaints" or "Re-use screen contents" the tearing goes away. I would expect the "Automatic" setting to do the right thing, but in this case it does not. This seems to be a common source of frustration for many users who haven't figured out the correct setting. Reproducible: Always 1418392 1 thomas.luebking 2013-12-14 05:52:44 +0000 ensure you're not running into bug #322060 the auto-selection on the nvidia blob is "re-use screen content" 1419144 2 luke 2013-12-17 23:43:29 +0000 Ah sorry, I didn't see that bug report because I didn't notice any CPU load issues but setting KWIN_TRIPLE_BUFFER=1 does fix the tearing issue with the Automatic setting. *** This bug has been marked as a duplicate of bug 322060 *** 1419148 3 thomas.luebking 2013-12-17 23:57:59 +0000 If you've triple buffering enabled in the driver there'll be no additional CPU load. See the last dupe comments and if you can provide the measured time on failure (notice that you've to unset KWIN_TRIPLE_BUFFER or the measure won't take place)