There are e a lot of posts when I searched with similar problems for different combinations of graphic cards 60hz displays. I tinkered with the custom resolution settings but after everything started working, I deleted the customer resolution. Make sure you have turned on HDR (if that is what you want). It can work but safe to select 2.0 when trouble shooting. In your 4K TV settings make sure you have selected the correct HDMI input port and also set it to be 2.0. To be on the safer side for troubleshooting use HDMI 2.1 cable which is rated for 8K signal.Ĥ. I had a bunch of cables with various names "high speed HDMI", "High speed HDMI with Ethernet", etc and most of them didn't work. Only the premium HDMI cable from Amazon or Monoprice or cable where manufacturer specifically states HDMI 2.0b compliant will work. Most of the HDMI cables on Amazon and other places are You won't realize it until you look closely or see the pictures posted. Your cable needs to support the HDMI specifications. If any of your HDMI ports is not 2.0b and is lower, you will be either limited to 30Hz refresh rate or no HDR or no 10 bit support and no 4:4:4 chroma sampling.ģ. You need HDMI 2.0b to support 60Hz with RGB 4:4:4 or YCbCr 4:4:4 and HDR. When they don't it, the lower of the two is what you get.Ģ. Your graphic card HDMI port specifications and your monitor/4K TV HDMI port specifications match. For limited or 8 bit selectin in the graphic card option it will only show 8 bit.ġ. The Windows 10 will show 8 bit with dithering for a signal with 10 bit pixel depth. If you selected to keep the settings you will be back in the Advance Display Settings which will display Resolution, Bit Depth, and Refresh rate. Apply and after few seconds of monitor screen going blank and a bit of flickering it will give you a dialogue box asking if you want to keep this settings.Ĩ. Then you can choose your resolution and refresh rate. When new window pops up select Display Properties for Display X. X is the number assigned to your display if you are using multiple monitors. Click the Advance Display Settings just below the Multiple Displays section. Under the Windows 10 Display Settings (Right click on desktop for shortcut) make sure the Use HDR is enabled.ħ. Other than above Display settings have only GPU Scaling, HDMI Link Assurance, Customer Color, Color Temp Control enabled. All of these are optional and shouldn't have any bearing on if you receive the desire signal of + RGB4:4:4 Full + 10 bit + HDR10 at your monitor input ( GPU scaling could impact what is rendered on the screen)Ħ. The menu will also show YCbCr 4:2:2, YCbCr 4:2:0 and Limited RGB 4:4:4 options [which of these you select depends on your monitor, its resolution, and whether it is HDMI 1.4, 1.4a, 2.0, 2.0a or 2.0b and in future 2.1 (for 8K TVs)ĥ. You can also select YCbCr 4:4:4, but since you have graphic card connected to the 4K/HDTV directly, the RGB 4:4:4 is better option. Second thing is to go to the Display menu and under the drop down for Pixel Format select Full RGB 4:4:4. It also automatically caused the G.Fresh rate to change to 60hz (before that G.Fresh only showed up as 30Hz).Ĥ. Almost all TV have a menu option (usually a button on the remote) which gives you exact details of the signal your TV is receiving. I verified it both under then Display Options in Windows 10 as well as on the HiSense R6 where you can see what signal is being received. This is the key step that solved all my problems. It allowed me to get the RX 570 to send RGB 4:4:4 10bit HDR signal to the UHD TV. The third from bottom you will find 10-Bit Pixel Format option and I had to enable it. First thing is to go under the Graphics menu scroll down and select Advance option. Below that is Pixel format option and from drop down menu select RGB 4:4:4 Format PC standard (Full RGB).ģ. One to choose pixel dpc at 8 bits, 10 bits and 12bits from drop down. Usually Display menu is where we try to fiddle the options to get the things working. When you click on the gear icon, you get second top ribbon menu for System Graphics, Display, Video, Hotkeys, Accounts, Devices, General.Ģ. Here is the Solution for those that want to skip the details:ġ. I installed Adrenalin 2020 version 20.12.1, which was released in first week of Dec, 2020. The Windows 10 kept on reverting back to 30Hz refresh rate. It took me 3 days to with 10 bit color depth and HDR10 which this particular low end TV supports. UHD/4K TV as monitor is more inexpensive option than purchase 4K monitor. My primary monitor is 8 years old 30" QHD 60Hz). Last week I purchased a RX 570 (XFX RX 570 RS 8G Black edition) graphics card to drive my second monitor which is HiSense 2020 UHD LED TV model R6090G (also called R6, R6+, or R7 depending on which store you bought it from) supporting 60hz native refresh rate, 10 bit color depth and HDR10.
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