Cursor is laggy on laptop display (AMD/PSR)
I experience #2086 (closed) on kernel 6.6rc2.
Hardware description:
- CPU: Ryzen 6850U
- GPU: Radeon 680M
- System Memory: 32 GB
- Display(s): Laptop's built-in monitor (PSR) and two USB-C dock connected Dell monitors (1440p)
- Type of Display Connection: eDP
- Laptop: Lenovo ThinkPad T14s Gen 3
System information:
- OS Ubuntu 23.10
- Kernel (Ubuntu mainline): 6.6.0-060600rc2-generic #202309171834
How to reproduce the issue:
Install kernel Ubuntu 23.10 and upgrade the kernel to 6.6rc2. Login into Wayland or X11 and move the mouse cursor on the laptop screen, the motion is very laggy. Moving the mouse on the other display's is smooth.
Adding kernel parameter amdgpu.dcdebugmask=0x10
works as a workaround and the cursor motion on the laptop screen is smooth again.