https://bugzilla.kernel.org/show_bug.cgi?id=208589

Bug ID: 208589 Summary: amdgpu screen corruption with DRI_PRIME on external monitor at resolution 2560x1440 and more then 60hz Product: Drivers Version: 2.5 Kernel Version: 5.8.0-rc5 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: dani@rodler-keller.de Regression: No

Created attachment 290323 --> https://bugzilla.kernel.org/attachment.cgi?id=290323&action=edit dmesg

On my Dell Inc. G5 5505 I get screen corruption if I use a resolution of 2560x1440 and more than 60HZ while using the dedicated AMD Radeon RX 5600M and an external monitor.

On the built in Laptop screen everything runs at 1920x1080 and 144 Hz without screen corruption.

Monitor: Iiyama XUB2792QSU connected with Displayport

CPU Brand: AMD Ryzen 7 4800H with Radeon Graphics

Operating System Version: "Arch Linux" (64 bit) Kernel Name: Linux Kernel Version: 5.8.0-rc5-1-mainline Window Manager: GNOME Shell (Wayland)

DRI_PRIME=1 glxinfo

Device: AMD Radeon RX 5600M (NAVI10, DRM 3.38.0, 5.8.0-rc5-1-mainline, LLVM 10.0.0) (0x731f) Version: 20.1.3

DRI_PRIME=0 glxinfo

Device: AMD RENOIR (DRM 3.38.0, 5.8.0-rc5-1-mainline, LLVM 10.0.0) (0x1636) Version: 20.1.3