AMD 7840HS has some problems for refresh rate

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1

My new laptop installed fedora 39 workstation with gnome DE:

System Details Report

Report details

  • Date generated: 2024-01-21 09:19:52

Hardware Information:

  • Hardware Model: Lenovo XiaoXinPro 14 APH8
  • Memory: 32.0 GiB
  • Processor: AMD Ryzen™ 7 7840HS with Radeon™ 780M Graphics × 16
  • Graphics: AMD Radeon™ Graphics
  • Disk Capacity: 1.0 TB

Software Information:

  • Firmware Version: MKCN25WW
  • OS Name: Fedora Linux 39 (Workstation Edition)
  • OS Build: (null)
  • OS Type: 64-bit
  • GNOME Version: 45.3
  • Windowing System: Wayland
  • Kernel Version: Linux 6.6.11-200.fc39.x86_64

The laptop in-build screen only can set refresh rate to 60Hz ( It can set to 120Hz on windows ),
and my extern monitor AOC 27ink 4K screen with type-c connection only can set refresh rate to 30Hz.

Are there some patches can fix it? Thanks a lot!

2

It seems to be a Gnome issue. Switching to KDE will fix the problem until Gnome fixes it. GNOME’s Variable Refresh Rate “VRR” Support Continues Coming Together

3

I changed the typec line to a DP-Typec line , refresh rate is 60Hz now.