Created attachment 177193 [details] screen settings SUMMARY The option to enable HDR in the screen settings is missing. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch KDE Plasma Version: 6.2.5 KDE Frameworks Version: 6.9.0 Qt Version: 6.8.1 ADDITIONAL INFORMATION It was working some versions ago, but I cannot remember which version. My TV obviously supports HDR.
P.S. my GPU is an AMD RX 6800 using the RADV drivers from mesa.
What does `kscreen-doctor -o | grep HDR` say?
(In reply to Nate Graham from comment #2) > What does `kscreen-doctor -o | grep HDR` say? It says HDR: disabled Here is the full log: Output: 1 HDMI-A-1 enabled connected priority 1 HDMI Modes: 1:3840x2160@30! 2:4096x2160@60 3:4096x2160@60 4:4096x2160@50 5:4096x2160@30 6:4096x2160@30 7:4096x2160@24 8:4096x2160@24 9:3840x2160@60 10:3840x2160@60* 11:3840x2160@50 12:3840x2160@30 13:3840x2160@30 14:3840x2160@25 15:3840x2160@24 16:3840x2160@24 17:2560x1440@60 18:1920x1200@30 19:1920x1080@60 20:1920x1080@60 21:1920x1080@60 22:1920x1080@50 23:1920x1080@30 24:1920x1080@30 25:1920x1080@25 26:1920x1080@24 27:1920x1080@24 28:1600x1200@30 29:1680x1050@60 30:1600x900@60 31:1280x1024@75 32:1280x1024@60 33:1440x900@60 34:1280x800@60 35:1152x864@75 36:1280x720@60 37:1280x720@60 38:1280x720@60 39:1280x720@50 40:1024x768@75 41:1024x768@70 42:1024x768@60 43:832x624@75 44:800x600@75 45:800x600@72 46:800x600@60 47:720x576@50 48:720x480@60 49:720x480@60 50:640x480@75 51:640x480@73 52:640x480@67 53:640x480@60 54:640x480@60 55:720x400@70 56:1600x1200@60 57:1280x1024@60 58:1024x768@60 59:2560x1600@60 60:1920x1200@60 61:1280x800@60 62:3840x2160@60 63:3200x1800@60 64:2880x1620@60 65:2560x1440@60 66:1920x1080@60 67:1600x900@60 68:1368x768@60 69:1280x720@60 Geometry: 0,0 2560x1440 Scale: 1.5 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown HDR: disabled Wide Color Gamut: incapable ICC profile: none Color profile source: EDID Brightness control: supported, set to 100%
Any news about that. Is there anything else I can provide to trubleshoot the problem?
Sorry, this kind of went under in my emails. > Wide Color Gamut: incapable This is why it's not shown in the display settings. Are you using a NVidia GPU? If so, which driver version?
My GPU is an AMD RX 6800 and I am using the latest Mesa with the RADV driver on Arch. HDR was working some months ago.
Note that it does not say HDR: unsupported but disabled. However there is no checkbox I can click on the screen settings to enable it.
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(In reply to Marco from comment #6) > My GPU is an AMD RX 6800 and I am using the latest Mesa with the RADV driver > on Arch. HDR was working some months ago. Can you attach the output of drm_info? Also, the output of edid-decode /sys/class/drm/card1-HDMI-A-1/edid might be helpful too.
Dear all, sorry for making you loose time on this. It turns out my TV has an option where I can select which HDMI input is an HDMI+ source (whatever that means), and after setting the HDMI input to which my PC is connect to HDMI+ the HDR option is back again!
Ah, no worries. Not the first time that display manufacturers make things unnecessarily confusing!