I'm not sure what's changed, if this is an X, DDX or Kernel issue but the number of modes has decreased on my 2400G and 60Hz is no longer available xrandr Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384 HDMI-A-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm 4096x2160 30.00 25.00 24.00 29.97 23.98 3840x2160 30.00* 25.00 24.00 29.97 23.98 1920x1080 60.00 50.00 59.94 30.00 25.00 24.00 29.97 23.98 1680x1050 59.88 1600x900 60.00 1280x1024 75.02 60.02 1440x900 59.90 1366x768 59.79 1280x800 59.91 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.03 70.07 60.00 832x624 74.55 800x600 72.19 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 72.81 66.67 60.00 59.94 720x400 70.08 HDMI-A-1 disconnected (normal left inverted right x axis y axis) HDMI-A-2 disconnected (normal left inverted right x axis y axis) HDMI-A-3 disconnected (normal left inverted right x axis y axis)
Created attachment 140274 [details] Xorg.0.log
Created attachment 140275 [details] Dmesg no 60Hz
Created attachment 140276 [details] EDID
If I use the modesetting DDX (with Xorg from git - to include the PCIIDs for Raven) X no longer starts and I get an error in the dmesg
Created attachment 140277 [details] Dmesg with error
Strange I've just tried to do this again with modesetting and X starts but the higher than 30Hz options aren't selectable, and 60Hz exactly is still missing
Xrandr now with modesetting xrandr Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384 HDMI-1 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm 4096x2160 30.00 25.00 24.00 24.00 29.97 23.98 3840x2160 59.97 30.00* 30.00 25.00 25.00 24.00 24.00 29.97 23.98 3200x1800 59.96 59.94 2880x1620 59.96 59.97 2560x1600 59.99 59.97 2560x1440 59.99 59.96 59.95 2048x1536 75.00 60.00 1920x1440 75.00 60.00 1856x1392 75.00 60.01 1792x1344 75.00 60.01 2048x1152 59.99 59.98 59.90 59.91 1920x1200 59.88 59.95 1920x1080 60.01 59.97 59.96 60.00 60.00 50.00 59.94 59.93 30.00 25.00 24.00 29.97 23.98 1600x1200 75.00 70.00 65.00 60.00 1680x1050 59.95 59.88 1400x1050 74.76 59.98 1600x900 59.99 59.94 59.95 60.00 59.82 1280x1024 75.02 60.02 1440x900 59.90 1400x900 59.96 59.88 1280x960 60.00 1440x810 60.00 59.97 1368x768 59.88 59.85 1366x768 59.79 1280x800 59.99 59.97 59.81 59.91 1152x864 75.00 1280x720 60.00 59.99 59.86 60.00 60.00 50.00 59.94 59.74 1024x768 75.05 60.04 75.03 70.07 60.00 960x720 75.00 60.00 928x696 75.00 60.05 896x672 75.05 60.01 1024x576 59.95 59.96 59.90 59.82 960x600 59.93 60.00 832x624 74.55 960x540 59.96 59.99 59.63 59.82 800x600 75.00 70.00 65.00 60.00 72.19 75.00 60.32 56.25 840x525 60.01 59.88 864x486 59.92 59.57 720x576 50.00 700x525 74.76 59.98 800x450 59.95 59.82 720x480 60.00 59.94 640x512 75.02 60.02 700x450 59.96 59.88 640x480 60.00 75.00 72.81 75.00 66.67 60.00 59.94 720x405 59.51 58.99 720x400 70.08 684x384 59.88 59.85 640x400 59.88 59.98 576x432 75.00 640x360 59.86 59.83 59.84 59.32 512x384 75.03 70.07 60.00 512x288 60.00 59.92 416x312 74.66 480x270 59.63 59.82 400x300 72.19 75.12 60.32 56.34 432x243 59.92 59.57 320x240 72.81 75.00 60.05 360x202 59.51 59.13 320x180 59.84 59.32 HDMI-2 disconnected (normal left inverted right x axis y axis) HDMI-3 disconnected (normal left inverted right x axis y axis) HDMI-4 disconnected (normal left inverted right x axis y axis)
Created attachment 140278 [details] Xorg.0.log with modesetting
I have a feeling that Kwin was trying to modeset back to 60Hz which was causing Xorg to crash and the error to appear in the dmesg I'll post the Xorg.0.logs if I manage to reproduce the issue
Is this different from bug 106959?
It might be the same, the EDID says the TV is capable of both 10bit and 12bit colour, I was under the impression that HDMI 2 was able to do 2160p@60Hz at those colour depths
From what I can see the HDMI 2.0 spec only supports 4k@60 at 8 bpc. I think you need HDMI 2.1 for 4k@60 with 10 bpc or greater.
What is Raven capable of? I know my SkyQ box outputs at 2160@60Hz in 10bit colour
(In reply to Mike Lothian from comment #13) > I know my SkyQ box outputs at 2160@60Hz in 10bit colour https://en.wikipedia.org/wiki/HDMI#Refresh_frequency_limits_for_HDR10_video 4k@60@10bpc needs YUV 4:2:2 for HDMI 2.0, so it can't handle RGB (or YUV 4:4:4). That's probably the discrepancy - there's currently no great way for userspace to select which encoding variant is to be used (or what bpc to send it at).
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