OMEN Transcend 32 Defaulting to 60Hz

[MayhemVC]

I recently bought an HP OMEN Transcend 32 Monitor. It is able to display 4K at up to 240Hz.

I have a Windows laptop connected via USB-C. It displays at 4K 120Hz.

I also have my gaming PC connected to the same monitor. It has a 7800XT GPU running Bazzite connected via HDMI. When I let Bazzite (Linux) choose the resolution it selects 4K @ 60Hz. This means that every game is limited to 60Hz.

If I manually select the resolution as 4K 120Hz the monitor flickers off and on (mostly off) and is completely unusable. I have had my gaming PC connected to my LG C2 OLED TV running at 4K 120 Hz with no problem.

Any suggestions on what I might be able to do to try and get the monitoring working with Bazzite at a higher refresh rate?

[banhien]

@MayhemVC 

Firstly please check HDMI version, does it support 4K @ 60Hz ?

Regards.

[MayhemVC · Accepted solution]

HDMI Version is 2.1. This is supported by both the monitor and my graphics card.

This should be able to provide 4K at 120 Hz (https://en.wikipedia.org/wiki/HDMI#Version_2.1).

I have since discovered that Linux does not support HDMI 2.1 on AMD GPUs because the drivers are not open source (https://www.howtogeek.com/hdmi-forum-open-source-drivers-hdmi-2-1/).

I have switched to Display Port (2.1), which IS supported by the monitor, my graphics card and Linux and it works great (4K @ 240 Hz).

This has now been resolved (operator error) and can be closed. Thanks!