https://bugs.freedesktop.org/show_bug.cgi?id=72387
--- Comment #12 from Michel Dänzer michel@daenzer.net --- (In reply to Thomas Rohloff from comment #11)
I'm now on LXQT with compton as compositor. The tearing is still there.
What command line parameters / configuration are you using for compton? Something like
compton --backend glx --glx-swap-method 2 --unredir-if-possible
works well for me.
With current xf86-video-ati Git master, you can also try Option "TearFree", which should prevent tearing even without a compositing manager. Its downside is that it disables DRI page flipping ATM.