I would like to ask for your help regarding the following use case:
I tried to enable the Windows 10 HDR option while have connected one or more secondary non-hdr monitors connected.
In my case all my screens went off, and I have to hard remove the non-hdr monitor to retrieve a video signal on my HDR monitor.
Now and therefore I had a chat with the XFX support (I own a XFX Radeon RX 570 8GB) over the last days - the answer was "throw away your non-hdr displays, if you want to go with win10 and enabled HDR".
As Win10 offers me to enable / disable HDR per display, but the card manufacturer is saying that they only provide HDR on / off on all output channels (DP1, DP2, HDMI in my case) ..
.. Should I expect that the current radeon driver supports and respects a selective HDR signal per output channel (independent from the GPU I am using)?
.. Should I expect that the card manufacturer support that feature on the hardware level ..
How would I can figure out if any *new* GPU supports something as selective HDR output?
My current card:
RX - 570P8D
GPU - Radeon RX 570 Series - Primär/Diskret
VRAM - 8192 MB - GDDR5 1750 MHz
Graphics Card Manufacturer - Powered by AMD
Graphics Chipset - Radeon RX 570 Series
Device ID - 67DF
Vendor ID - 1002
SubSystem ID - C570
SubSystem Vendor ID - 1682
Revision ID - EF
Bus Type - PCI Express 3.0
Current Bus Settings - PCI Express 3.0 x16
BIOS Version - 015.050.002.001
BIOS Part Number - 113-57085STB1-W90
BIOS Date - 2017/11/29 00:55
Usable Memory Size - 8192 MB
AMD Ryzen 9 3900X 12-Core Processor
I have my primary monitor (Samsung C49RG9x) as DisplayPort1
I have two secondary monitors (LG 27 UD 88-W) as on DisplayPort2 und HDMI
Those two LG's not supports HDR, the Samsung supports HDR
If I turn on "Windows10 HDR Game and Apps" option all three monitors went black (no signal)
The Samsung not recovers even if I manually switch off the LGs
Only if the LGs cable were removed from the card the Samsung recovers (with HDR enabled)