6900XT 5120x1440 @ 240Hz not possible
Brief summary of the problem:
Setting 5120x1440 with 240Hz results in screen flickering I have tried with multiple cables that are for 8K (supplied by Samsung) End result if i manage to set it using Gnome display settings monitor flickers with odd display corruption. Lowering the resolution and upping the Hz works but not with native resolution.
Hardware description:
- CPU: 5900x
- GPU: 6900XT
- System Memory: 16GB
- Display(s): 1 Samsung G9 (5120x1440 @240Hz)
- Type of Diplay Connection: DP
System information:
- Distro name and Version: Arch
- Kernel version: 5.10.6-arch1-1
- AMD package version: (From arch mesa-git repo) https://wiki.archlinux.org/index.php/Unofficial_user_repositories#mesa-git DRM 3.40.0, 5.10.6-arch1-1, LLVM 12.0.0 Mesa 21.0.0-devel (git-d2524ed4a0)
How to reproduce the issue:
Start PC and display dmesg