Can only enable HDR when using one monitor


klikini

Active member
Local time
7:05 PM
Posts
1
OS
Windows 11 Pro
I finally bit the bullet and upgraded from Windows 10 to Windows 11 just so I could have functioning HDR on my system, but it seems like that isn't going to happen easily.

I have two identical HDR-enabled monitors (LG 27GN800-B) connected via HDMI 2.0 cables to my RX 470 (which supports HDR and has HDMI 2.0 ports). Currently I have the displays set to extend mode. Turning on HDR in this mode results in the switch immediately turning back off.

However, if I set it to only use one monitor (doesn't matter which one), I can then set that monitor to use HDR. The colors look washed out, but I feel like that's fixable via calibration if I could get it working reliably. If I switch to individual monitors and turn on HDR for both, I can no longer switch back to extend mode; it immediately reverts to single monitor mode.

After seeing this post on Microsoft Community, I tried downgrading my GPU driver from 22.5.1 to 21.8.2 as suggested. This let me turn on HDR with both monitors enabled in extend mode, but after doing that, the secondary monitor was just black (but on), and system performance/responsiveness became unusable. It was kind of like input lag, but sometimes input wouldn't register at all, and it was like everything was stuttering. Searching for this just came up with Reddit posts about HDR causing stuttering in some games, but this was the entire Windows desktop with no game open. So, I upgraded all the way to version 22.9.1 of the driver, and the result is the same as with 22.5.1.

I don't think it's a hardware or HDMI cable problem because I can enable HDR for both monitors independently, but I can't use both at the same time.

Has anyone seen anything like this before? I've spent several days trying to figure this out and I'm all out of ideas. I am happy to provide any logs or other information, just let me know what to grab. I'm completely lost here and any help would be much appreciated :)

P.S.: if the answer is "don't use an AMD GPU, their drivers suck", I will probably have a new NVIDIA GPU soon, but I have HDR photos I need to process in the mean time!
 
Windows Build/Version
Windows 11 Pro Version 21H2 (OS build 22000.1042)

My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 7 2700X
    Motherboard
    Asus ROG STRIX B450-F
    Memory
    32GB (4 x 8 GB) G.Skill Aegis DDR4-3000 CL16
    Graphics Card(s)
    Sapphire Radeon RX 470 8 GB NITRO+
    Monitor(s) Displays
    2 x LG 27GN800-B
    Screen Resolution
    2560x1440
    Hard Drives
    WD_BLACK SN750 SE 1TB M.2 SSD
    2 x Kingston A400 240 GB SSD in RAID 0
    PSU
    EVGA 500B 500W 80+ Bronze
    Case
    Cooler Master HAF XB EVO
    Keyboard
    WASD V2 88-Key ISO Custom Mechanical Keyboard
    Mouse
    Logitech MX Master 2S
    Internet Speed
    1000 Mb/s download, 15 Mb/s upload
    Browser
    Firefox 105
    Antivirus
    Microsoft Defender
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    ThinkPad T590
    CPU
    Intel i7-8565U @ 1.80 GHz
    Memory
    16GB @ 2400 MHz
    Graphics card(s)
    Intel UHD Graphics 620
    Screen Resolution
    1920x1080
    Hard Drives
    WD SN730 512GB M.2 SSD
    Internet Speed
    1000 Mb/s download, 15 Mb/s upload
    Browser
    Firefox 105
    Antivirus
    Microsoft Defender

Latest Support Threads

Top Bottom