Comment # 30
on bug 111122
from William Bonnaventure
Fixed issue with a BIOS update on Lenovo E485 (v1.54 with AMD 2500U) with Fedora 30 KDE. I had an issue on previous BIOS that requires a kernel option to boot on all kernels (ivrs_ioapic[32]=00:14.0). After BIOS update, this option is not needed and there is no longer graphic corruption on Kernel 5.2+. This corruption was impacting at least Firefox, dolphin and the Plasma Desktop. KDE plasma 5.15.5 mesa 19.1.6 xorg-x11-drv-amdgpu 19.0.1 libdrm 2.4.99 As of my observation, the graphic corruption was introduced in the amdgpu driver inside Kernel 5.2 and occurs only when forcing boot with the ivrs_ioapic override.
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