Slow desktop environment performance with multi-head configuration
Submitted by Alen Skondro
Assigned to Xorg Project Team
Description
Hello,
I already opened an issue on the arch linux forums: https://bbs.archlinux.org/viewtopic.php?id=206297
But now I know that it has something to do with my dual-head configuration.
The main issue is that almost all DEs (gnome, gnome-wayland, enlightenment, cinnamon) show noticeable visual performance decrements when dual-head is enabled. Disabling the secondary head results in normal and fluid animation, where the dual-head configuration results in degraded visual animations.
I'm using the nouveau (gtx770) driver on arch linux (4.4-rc5).
What could be the problem? How can I help to resolve this issue?