I'm using dual monitors, one of which is rotated with
xrandr --output HDMI-1 --rotate left
I get screen tearing on Google Chrome (installed from Chrome's PPAs, not Chromium) on both monitors, though it's more noticeable on the rotated one. I don't seem to get screen tearing in other programs, like gnome-terminal for example.
My GPU is
$ inxi -G Graphics: Device-1: Intel UHD Graphics 630 driver: i915 v: kernel Display: x11 server: X.Org 1.20.4 driver: i915 resolution: 1920x1080~60Hz, 1920x1080~60Hz OpenGL: renderer: Mesa DRI Intel UHD Graphics 630 (Coffeelake 3x8 GT2) v: 4.5 Mesa 19.0.8
I tried adding
Section "Device" Identifier "Intel Graphics" Driver "intel" Option "TripleBuffer" "true" Option "TearFree" "true" Option "DRI" "false" EndSection
/etc/X11/xorg.conf.d/20-intel-graphics.conf as per this question, but the problem is that command makes my dual monitors act as one monitor (the same picture shows up on both monitors). I tried removing the
DRI lines, but that changed nothing. This side effect is mentioned in this Arch Linux Forum thread with a possible solution of adding
i915.semaphores=1 to the kernel boot parameters. I don't know if that 7 year old advice is still relevant and if I was in a situation where I could fiddle with kernel boot parameters, I probably wouldn't be using Ubuntu in the first place.
I also tried setting the
chrome://flags/#ignore-gpu-blacklist Chrome flag as per this question, but nothing seems to have changed in
I'm using i3 as my window manager. I'm using X, not Wayland (i3 doesn't work with Wayland).