PC -> HDMI 4 (4 is the only HDMI port which accepts 8k)
Turn Input Signal Plus on TV. (Menu - Settings - General - External Device Settings - Input Signal Plus)
Nvidia settings, make sure GPU scaling is set to TV.
Set to 4k, click apply.
set to YCbCr420 in colour format, click apply.
Set Refresh Rate to 60hz. Apply.
Set Colour bit depth to 10 bit. Click apply.
8k should be in the menu. You can't change any of the above colour settings or you'll lose sync.
Right Click desktop and select Display Settings.
Click Advanced Display Settings.
Click Display adapter properties for Display 1
Click List All Modes
Select 8k. Ok it all.
If you're getting No Signal errors when trying to turn on Input Signal Plus then that's another matter, which I may be able to help with.
Hi thanks. The whole thing seems so buggy. First time in 2 days of messing i have managed to get a native 8k resolution through windows. However, the resolution in the top right of the screen still seems to be stuck at 3840 x 2160 30p Input Signal Plus.
When i try change resolution through either of the methods above it just reverts back to some blurry downscaled 8k res. So i have 8k res in windows but its barely readable. Cant change any refresh rates on monitor
There appears to be a mess up with the latest firmware with the handshake with HDMI 2.1 devices.
If you have a spare Display Port to HDMI adapter you can fix it, sort of.
You need to use the DP adapter to connect the GPU/HDMI to the TV and set the GPU up to 4k 60hz 4:2:0 colour and 10 bit with Input Signal Plus on.
Turn the TV off, then disconnect the Cable from the DP adapter and plug straight in to the GPU HDMI port. Turn the TV on and it "should" allow you to go 8k 60hz.
If you don't have a DP-HDMI adapter you could try it on a different HDMI socket on the TV , turn the TV off and reconnect to HDMI 4. Then turn the TV back on again.
If that works, set the Nvidia Scaling to GPU so you don't lose signal with other resolutions under 4k.
It should become available once you select 4k 60hz. Or try a really low resolution like 720p.
Make sure your TV sees the HDMI 4 as PC rather than unknown or whatever.