VRR with dock on an HDMI 2.1 TV?

[SorryItsPo]

Hello,

I'm trying to find an answer on this and can't find a concrete answer. I bought the Steam dock to use with my TV that supports VRR. I then found out that that Steam dock uses HDMI 2.0, and the only way to get VRR is through the Display Port connection.

My question is, if I get an adapter that supports Display Port to HDMI 2.1, will I get VRR that way? If I go from DP converted to HDMI 2.1, will that support VRR? My TV doesn't have a display port, only HDMI. It supports VRR through an HDMI 2.1 cable. Have any confirmation on this?

This is the adapter I'm considering purchasing to get VRR when docked on my HDMI 2.1 TV: https://a.co/d/1T92NRw

Thank you in advance

This message was sent to Steam Support and they were unable to answer. Told me to start a discussion here.

[Nanaki]

https://www.google.com/search?client=firefox-b-d&q=if+I+get+an+adapter+that+supports+Display+Port+to+HDMI+2.1%2C+will+I+get+VRR

https://www.reddit.com/r/playstation/comments/ujag8z/can_i_use_display_port_to_hdmi_21_adapter_to_get/?rdt=45881

This was the first two seconds of google searching :p

Don't cheap out and make sure to get a reputable brand of adaptor, that said, doesn't need to be expensive either :p

Aside from that, it will be a case of trial and error and build up experience :p

[Nanaki]

Couple of points to note with the link you provided:

No mention of VRR, I know to be variable refresh rate

Also this stood out at me:
Non-bidirectional adapter - Can only be used on a DisplayPort on a computer. Cannot be used with devices such as gaming consoles or BluRay players.

Am thinking you might have to look a little further....

Hope this helps a bit

[Nanaki]

Concerning the cable:

We wrote more about this feature in How HDMI 2.1 makes big-screen 4K PC gaming even more awesome. Game Mode VRR will also work over current cables (between two pieces of 2.1-compatible gear), though if you're trying to push greater-than-4K60 video, you'll need an Ultra High Speed HDMI cable.

Also:

VRR can work with HDMI 2.0 but only up to 60Hz.

[Nanaki]

It should be stated I can't guarantee this working, like I said it's trial and error but this one seems good :p

https://www.amazon.co.uk/Displayport-WARRKY-Gold-Plated-Connector-Compatible/dp/B081GMCNNF/ref=asc_df_B081GMCNNF/?tag=&linkCode=df0&hvadid=430752237789&hvpos=&hvnetw=g&hvrand=10623509469890023259&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1006886&hvtargid=pla-869023736616&mcid=1f6c4ad92d1a3fd28d4e92fcfc6668ef&ref=&adgrpid=108575012348&th=1

[deaddoof]

HDMI mafia will not allow AMD to implement HDMI 2.1 in open source drivers.

https://gitlab.freedesktop.org/drm/amd/-/issues/1417

You will not have HDMI 2.1 support because HDMI mafia chooses to be legal happy.

[deaddoof]

I do not believe any DP -> HDMI adapter that support VRR at the moment. Yes, the adapter have to be active because HDMI is a crappy port managed by a crappy organization who rather hire lawyers than work with the community.

https://hackaday.com/2023/07/11/displayport-a-better-video-interface/

[Nanaki]

Originally posted by deaddoof:

HDMI mafia will not allow AMD to implement HDMI 2.1 in open source drivers.

https://gitlab.freedesktop.org/drm/amd/-/issues/1417

You will not have HDMI 2.1 support because HDMI mafia chooses to be legal happy.

Originally posted by deaddoof:

I do not believe any DP -> HDMI adapter that support VRR at the moment. Yes, the adapter have to be active because HDMI is a crappy port managed by a crappy organization who rather hire lawyers than work with the community.

https://hackaday.com/2023/07/11/displayport-a-better-video-interface/

Fair enough, useful info

[deaddoof]

Originally posted by Nanaki:

Originally posted by deaddoof:

HDMI mafia will not allow AMD to implement HDMI 2.1 in open source drivers.

https://gitlab.freedesktop.org/drm/amd/-/issues/1417

Fair enough, useful info

Some people reporting displayport alt mode or coverters working ok

https://www.amazon.com/dp/B08XFSLWQF?ref_=cm_sw_r_cp_ud_dp_KE4Y4NQN7M87BHTH2AD5

I do not have these devices. You can check them with various setups.

https://www.reddit.com/r/linux_gaming/comments/1avv70h/comment/krfmrfs/

https://gitlab.freedesktop.org/drm/amd/-/issues/1417#note_2059184

[Nanaki]

Originally posted by deaddoof:

Originally posted by Nanaki:

Fair enough, useful info

Some people reporting displayport alt mode or coverters working ok

https://www.amazon.com/dp/B08XFSLWQF?ref_=cm_sw_r_cp_ud_dp_KE4Y4NQN7M87BHTH2AD5

I do not have these devices. You can check them with various setups.

https://www.reddit.com/r/linux_gaming/comments/1avv70h/comment/krfmrfs/

https://gitlab.freedesktop.org/drm/amd/-/issues/1417#note_2059184

I'm not the OP dude :)

[SorryItsPo]

UPDATE: I purchased the cable matters DP 1.4 to HDMI 2.1 adapter and VRR still doesn't work. I guess VRR with a TV through HDMI 2.1 just isn't possible.

[retro_Ed]

In my testing Steam Deck supports max 2560x1440 120hz VRR through HDMI 2.1 cable.

It is NOT smoothest, just plug & play experience but it seems to be working.
I found that VRR must be enabled from Deck BEFORE starting game from quick access menu or otherwise VRR is grayed in game.

Many displays have only 45-48 Hz starting point for VRR & Freesync.

For me locking framerate is much better option.
On 144 Hz monitor I can choose 72, 48 and 36 framerates
On 120 Hz same values are 60, 40 and 30.

Currently testing with LG C3 evo model.

Edit: All testing with official Dock !!!

[deaddoof]

HDMI forum blocked AMD petition to implement HDMI 2.1 into FOSS drivers.

https://www.phoronix.com/news/HDMI-2.1-OSS-Rejected

Whelp. I guess I have to look for displayport inputs for all of my display from now on.

[retro_Ed]

Little VRR update. (still max 2560x1440p 120hz through hdmi)

I tested 3.60 preview version and at the same time official (latest ?) dock software was downloaded and installed.
3.60 was so buggy that i rewind it back to stable.

I dont know is reason this new dock software but using VRR seems to be just one toggle and it works (LG C3 evo). Tested also on my cheap samsung monitor. Yes, toggle on, and it is working.

Dock software is: 0.13.15.124