HDR is not working when game mode is on. Even if VRR is turned off.
My graphic card is a Powercolor Red Devil 6900XT.
Here's the things I did:
There are 2 Threads with the same problem but the solutions that were shown there don't work for me. In 1 thread apparently HDR started working again in gaming mode in Full HD, for me it still can't be turned on even in 1080p. And in the other thread they edited the extension block in CRU and added a Freesync 48-120hz range entry, which I already have.
Strangely HDR in gaming mode works again with when I run the Samsung TV with my Denon AV Receiver but with this configuration I don't have VRR, which is why I use AV Receiver with E-Arc and my Samsung TV connected straight to the PC.
Maybe some handshake issue between AMD Card and Samsung Q90N?
Got the same problem I tried everything I can, even the only solutions found in the threads you mention but if I activate the game mode i can't have hdr, the games are beautiful if I deactivate game mode but no vrr and input lag so I would love to find something to resolve this problem...
I have a QN85A 55"
asus rx vega 64
Hm, it's the same for me, no st.2084 color space is available so it seems I was wrong. It looks close to HDR with HDR turned on in Windows for me but seems like it's no real HDR. My problem persists.
Yeah, I will solve my problems by sending back the AMD Card. With my previous Nvidia 3070 everything worked fine. Still, you run into so many issues for having the audacity to use a TV with gaming features as a display for a gaming pc, it's no fun at all.
I might have a solution for you, or anyone looking for a fix. This is what worked for me, i have a 6900xt.
First you need CRU Custom Resolution Utility
1.turn off game mode from TV settings (very important step)
2. open CRU and edit Extension Blocks
3. delete the 24hz / 30hz Tv Resolutions
4. Add Freesync Range 48 - 120
5. Export CRU settings
6. Activate game mode from TV settings, open CRU and import the settings you just exported
7. Use restart64 from cru folder and you should have HDR and Freesync with game mode on any resolution