VSync issues/Tearing in KWin with composite enabled


Has you know (here and here) there is tearing with Kwin, for more than year at least, if you simply enable composite. Only setting __GL_YIELD=“USLEEP” avoids this.

So it would be wonderful if this issue can be fixed and I think a lot of people will be happy if you can give us an update on the situation.

Thank you.

The proper solution is to enable triple-buffering.

Section “Device”
Identifier “Device0”
Driver “nvidia”
Option “TripleBuffer” “1”

in your /etc/X11/xorg.conf file.

Ok I tried and it works good.
Thank you very much.

So is there a bug in Nvidia driver or Kwin ?

Age old Kwin bug.

I didn’t read all the comments but the status of the bug report is UNCONFIRMED.
I speak with some people on Netrunner forum here who says that is a Nvidia bug.

So I don’t know what is true and it will be good if some Nvidia “official” can answer.

The status doesn’t mean much. Thomas Lübking who is a KDE dev is on this for a year now and merges nvidia vsync bug reports into this one.