Arch Linux

procyon01

Member

Registered: 2024-07-14

Posts: 1

external display refresh rate problem

I'm using Arch Linux with GNOME. I have a laptop screen and an external monitor. While my laptop screen operates at 144 Hz, my external monitor, which supports 144 Hz, doesn't seem to run at that refresh rate. In the Displays settings, it shows 144 Hz, but I can't actually use it at 144 Hz. I don't understand why this is happening and how to fix it.

lspci -vnn | grep -i VGA -A 12
00:02.0 VGA compatible controller [0300]: Intel Corporation CometLake-H GT2 [UHD Graphics] [8086:9bc4] (rev 05) (prog-if 00 [VGA controller])
	DeviceName: Onboard - Video
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:12ae]
	Flags: bus master, fast devsel, latency 0, IRQ 159, IOMMU group 0
	Memory at ab000000 (64-bit, non-prefetchable) [size=16M]
	Memory at 40000000 (64-bit, prefetchable) [size=256M]
	I/O ports at 4000 [size=64]
	Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: i915
	Kernel modules: i915

00:04.0 Signal processing controller [1180]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem [8086:1903] (rev 02)
--
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation TU106M [GeForce RTX 2060 Mobile] [10de:1f15] (rev a1) (prog-if 00 [VGA controller])
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:12ae]
	Flags: bus master, fast devsel, latency 0, IRQ 200, IOMMU group 2
	Memory at ac000000 (32-bit, non-prefetchable) [size=16M]
	Memory at 80000000 (64-bit, prefetchable) [size=256M]
	Memory at 90000000 (64-bit, prefetchable) [size=32M]
	I/O ports at 3000 [size=128]
	Expansion ROM at ad000000 [virtual] [disabled] [size=512K]
	Capabilities: <access denied>
	Kernel driver in use: nvidia
	Kernel modules: nouveau, nvidia_drm, nvidia

WayNKG

Member

Registered: 2024-07-23

Posts: 3

Re: external display refresh rate problem

Are you using the laptop screen and external display at the same time? Did you try using just the external display? Maybe it can't handle 2 144Hz displays at once.