Hi! I have just done a fresh install of Fedora 31 KDE Plasma as I just moved from Windows and am a complete linux noob. I noticed that on my widescreen monitor there is an abundant amount of screen tearing if I set the resolution to 2560x1080. It flickers through a bunch of different colours and gets intense if I move the mouse. When i set the resolution to 1920x1080 the flicker goes down a lot but is still there.
I have tried changing the compositor to Full screen repaints but that doesn’t fix the issue. On researching I found it could be my graphics driver. I have no clue how to swap to the amdgpu module to test.
lspci -k | grep -EA3 'VGA|3D|Display'
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
Subsystem: Gigabyte Technology Co., Ltd Device d000
Kernel driver in use: i915
Kernel modules: i915
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii PRO [Radeon R9 290/390] (rev 80)
Subsystem: ASUSTeK Computer Inc. STRIX R9 390
Kernel driver in use: radeon
Kernel modules: radeon, amdgpu