Pop!_OS 180hz external monitor issue

Linux Distributions Pop!_OS
1

Problem

I tried to set my display refresh rate to 180hz on Pop!_OS, but after a few seconds of black screen with the message “Out of range”, the refresh rate go back to 120hz.

Hardware

Notebook: Dell G15 5530, Nvidia RTX 3050 (nvidia optimus disabled via BIOS)

Monitor: LG 24GS60F

Cable: Ugreen 70319 (certified HDMI 2.1)

ISO: pop-os_22.04_amd64_nvidia_57 (running on live usb)

What I already tried:

1. First I tried to set 180hz via the display settings. The result: black screen, and after a few seconds the screen turned on with 120hz instead of 180hz.

2. I tried xrandr --output HDMI-0 --mode 1920x1080 --rate 180. The result: black screen, then I manually reboot after like one minute.

3. I tried changing the refresh rate to 180hz via Nvidia X Server Settings. The result: same as the first attempt via display settings.

If anyone knows how I can fix this, please help me.

1 Like
2

Hi Hicarnus, that seems like a tough problem to fix!

The problem: your second monitor connected to your laptop isn’t displaying at full 180hz refresh rate, and when you set it to 180hz it goes to black screen.

Question 1: Have you tried not doing it on a live USB? (Live USB isn’t always stable)

Question 2: Does your second monitor behave the same on “good” ol Windows? If it works normally on Windows, consider question 1 or consider using a different distro. (Because not all distros are built the same)

Hope you can fix the issue!