Monitor switching refresh rate issue (SOLVED)

[twin spear]

When I try to switch the monitor's refresh rate to a higher refresh rate (from 60Hz to 100Hz) through the Display applet, my monitor ends up in a black screen and turns itself off. When I try turn it back on again.
It ends up in a cycle of turning itself off, and the only way for my screen to go back to normal is when I restart my PC.
Below I have provided information from 'xrandr' and 'inxi -Fxxxzr'

[full delta]

First things first the monitor supports 100hz at that resolution both according to X and the specs no reason whatsoever it ought not wprk

You have appropriate video drivers and kernel

By display applet I'm assuming that you mean the display settings app that comes with cinnamon?

Also is there anything between the computer and monitor like a KVM, adapter, switch etc?

If not have you tried a different cable?

[twin spear]

Yes, thats right
Theres nothing in between my hdmi cable, its directly connected straight into my GPU
Currently I dont have access to another cable

The cable did work fine before i transferred to mint

[full delta]

To switch to the higher refresh rate you can run xrandr --output HDMI-A-1 --mode 1920x1080 --rate 100

if the behavior is the same you can get more info by running

sudo get-edid | parse-edid

You may need to install one or both of those

To eliminate a software issue it might be useful to boot from a live environment like the installer and see if it displays the same issue

[indigo dock]

This can still be a cable issue, with the cable not quite making the higher rate required for 100Hz. If you can, try with DisplayPort, which is the vastly superior standard anyway. Otherwise try with a different HDMI cable that is proven to work at 1080@100Hz.

[twin spear]

For the CLI command, the same problem occured, tho this time I didnt need to restart my pc, I got my screen back from a mouse click. I checked my refresh rate and it was still 60Hz. I tried swapping the HDMI port to my HDMI-0, same problem. Same problem when in live environment. This is what my edid says, I dont really understand since I'm new

[twin spear]

I don't have another spare cable to test right now, should I go and order a display port cable rn?

Should I just get one from some random amazon link or do I need to be careful

[indigo dock]

I do not want to make guarantees that it will work with the DP cable, but since having a DP cable is universally a good investment, it cannot hurt.

[indigo dock]

Let me answer that with a video: https://www.youtube.com/watch?v=Vn2vdQZhs0w

[twin spear]

This will restrict what kind of cable I can get, right?

[indigo dock]

No, they are backwards compatible. You want a 2.0 cable, so the next monitor after this one will not be limited by it.

Or at least 1.4 if the 2.0 ones are too expensive for your liking.

[twin spear]

I dont plan on upgrading my system since I'll be moving out in a year anyway but thank you very much for the info

[indigo dock]

Cables live long lives if they keep working.

[twin spear]

Alright I'll return to this when I receive my cable and try it

[lament musk]

also perhaps try cinnamon wayland session? im not sure it can fix it though

[twin spear]

sadly no luck on wayland either

[twin spear]

So my display port came and I immediately swapped out the HDMI cable and it's worked, I was able to increase the refresh rate

Thank you all so much for your help

However I found a new issue that's unrelated and my "Suspend" does not function properly

When I suspend, my PC lights flicker off and back on without me moving any of my peripherals

And my system doesn't wake back up when I click or press a button on my keyboard

My monitor also says that there is no signal

[indigo dock]

That might be an issue of the B550 chipset. I hear they are wonky about USB. A UEFI update might help.

[twin spear]

Alright thanks

[full delta]

Good call on the cable