Arch Linux

ozooha

Member

Registered: 2009-09-29

Posts: 174

[SOLVED] RX 550 - amdgpu provide no 60 hz option

I have installed the amdgpu driver for the RX 550 as per the arch wiki.
Upon booting up, I get, as per the xrandr -q: 3840x2160 with 30 as the default and connected option (i.e. the + and * are on 30 hz).

There is no option for 60 hz and the other options are less than 30 hz

The hdmi cable is 2.0b and it give  the required rate with nVidia shield - 3840x2160 with 59.94 fps.

The AMD site claims that it provides 60 Hz as well.

What is that I need to do or what do I need to show you to rectify this (if it can be)?

Should I be using the amdgpu-pro?

Thanks

OZooHA

Last edited by ozooha (2019-06-12 20:39:15)

WFV

Member

From: ☭USSA⛧⭒⭒⭒⭒

Registered: 2013-04-23

Posts: 288

Re: [SOLVED] RX 550 - amdgpu provide no 60 hz option

4k res is like cramming 4 monitors into one, which maybe why 30Hz max for that card. Try 1920x1080 and see if you get 60Hz?
don't know amdgpu-pro has anything to offer the RX550.

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ozooha

Member

Registered: 2009-09-29

Posts: 174

Re: [SOLVED] RX 550 - amdgpu provide no 60 hz option

The point of the question was to get it at 4K@60 Hz and not anything else.
Please refrain from commenting if you do not understand the question or cannot provide the required solution.
Appreciate the intent but no thank you.
OZooHA

seth

Member

Registered: 2012-09-03

Posts: 51,253

Re: [SOLVED] RX 550 - amdgpu provide no 60 hz option

Xorg log please.

You can try to explicitly add the modeline, if that fails, try to create a modeline w/ reduced blanking.
https://wiki.archlinux.org/index.php/Xr … esolutions

Also try swapping the ddx driver (xf86-video-amdgpu and the built in modesetting driver, this is unrelated to the kernel module)

The pro driver won't help you except there *might* be a bug in the amdgpu kernel module randomly absent in the pro version.

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ozooha

Member

Registered: 2009-09-29

Posts: 174

Re: [SOLVED] RX 550 - amdgpu provide no 60 hz option

It got solved as I had to tweak a setting on my monitor - Samsung TV.
I switched on the HDMI UHD Color mode in the Picture section which gave me the desried 60 Hz refresh rate.

Thank you Seth for you help.

OZooHA

seth

Member

Registered: 2012-09-03

Posts: 51,253

Re: [SOLVED] RX 550 - amdgpu provide no 60 hz option

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc