Screen tearing bugs in some applications
System information
Here is the output of inxi -GSC -xx
:
System: Host: mycomputer Kernel: 5.4.28-2-lts x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: i3 4.18 dm: startx Distro: Arch Linux
CPU: Topology: Quad Core model: Intel Core i7-8565U bits: 64 type: MT MCP
arch: Kaby Lake rev: C L2 cache: 8192 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 31999
Speed: 800 MHz min/max: 400/1800 MHz Core speeds (MHz): 1: 800 2: 800 3: 800
4: 800 5: 800 6: 800 7: 800 8: 798
Graphics: Device-1: Intel UHD Graphics 620 vendor: Lenovo driver: i915 v: kernel
bus ID: 00:02.0 chip ID: 8086:3ea0
Display: server: X.Org 1.20.8 driver: i915 resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (WHL GT2) v: 4.6 Mesa 20.0.2
compat-v: 3.0 direct render: Yes
Describe the issue
As discussed in https://bugs.archlinux.org/task/66029 the last upgrade seems to induce tearing bugs in some applications like firefox and KDE plasma. The bug seems to be related to the Iris driver because it used to work with the previous version which didn't use Iris as default.
Let me know if you want me to supply additional informations.