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s4tch
Adept I

Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

Hey AMD Community, 

I read these threads:

My monitor supports 10bit but cannot be enabled in Radeon setting 

How do you get the WX 5100 to use 10-bit? 

Windows 10 RGB444 4K 60hz 10bits mode issue 

...but I still couldn't get 10-bit 4k working on my AOC U2777PQU.

I'm running the latest 20.4.1 Radeon Software, but I tried 19.12.1 and 20.2.2 with the same results. I can select 10-bit in the software, but when I activate it, it automatically reverts to 8-bit. I tried 30Hz, full and limited RGB, different YCbCr settings, same story. My operating system is Win10 Pro 1909. I have the B450 Aorus M board, it only has a single HDMI, no DP, so there's that.

I saw in the previous threads that cru data can be useful, so here it is:

Clipboard01.png

00 FF FF FF FF FF FF 00 05 E3 77 27 9D 00 00 00
32 1D 01 03 80 3C 22 78 2A 28 95 A7 55 4E A3 26
0F 50 54 2D 4B 00 D1 C0 81 80 81 40 95 0F 95 00
B3 00 81 C0 01 01 4D D0 00 A0 F0 70 3E 80 30 20
35 00 C0 1C 32 00 00 1A 00 00 00 FC 00 55 32 37
37 37 42 0A 20 20 20 20 20 20 00 00 00 10 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10
00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 B6
02 03 33 70 4C 90 04 03 1F 13 01 12 5D 5E 5F 60
61 23 09 07 07 83 01 00 00 6D 03 0C 00 10 00 38
78 20 00 60 01 02 03 67 D8 5D C4 01 78 80 03 E3
0F 00 0C 01 1D 00 72 51 D0 1E 20 6E 28 55 00 40
B4 10 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96
00 B4 78 00 00 00 18 4D 6C 80 A0 70 70 3E 80 30
20 3A 00 E0 1C 12 00 00 1A 04 74 00 30 F2 70 5A
80 B0 58 8A 00 C0 1C 32 00 00 1A 00 00 00 00 63

Clipboard02.png

The only thing I can't verify is the HDMI cable. I use the factory cable, and AOC doesn't provide any specific info about it. I have other cables, but they are older than 2013 (HDMI 2.0 dates back to that year), so I assume there's no point in trying them.

Any advice would be appreciated. Thank you.

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9 Replies
s4tch
Adept I

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

fsadough‌ any ideas?

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fsadough
Moderator
Moderator

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

Can you please elaborate on your statement "I can select 10-bit in the software, but when I activate it, it automatically reverts to 8-bit"? What Software are you referring to? There is a  difference between 10bpc and 10-bit settings.

fsadough
Moderator
Moderator

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

I emulated the EDID you sent and I can get 10bpc with no issues. Check your Radeon Pro Settings under Display and post a screenshot.

Capture_AOC.PNG

s4tch
Adept I

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

Thanks for the answers. How do I get Radeon Pro Settings working? As I wrote, I'm using the 20.4.1 Radeon Software (this one), and I posted a screenshot of it showing display specs. It looks completely different to what you've posted. I tried to install the Pro software (this + some earlier versions too), but I got an error message saying that no supported card found or similar. As indicated in the thread title, I have the Ryzen 5 3400G with no dedicated graphics card in the system at all.

As for the 10-bit vs 10bpc, honestly, I don't know the difference, so I used the wrong term. I tried to set 10bpc here:

Clipboard01.png

When I click 10bpc, the screen goes black for a second, then I can only select 8bpc. The screen is running in 8-bit mode according to the windows 10 advanced display settings. I already installed the driver AOC provided (here).

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fsadough
Moderator
Moderator

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

Regarding the difference:

10bit pixel format (bpp) has nothing to do with 10bit color/channel (bpc).

  • 10 bit per channel (bpc) is related to the number of bits per Color Channel (R=Red, G=Green, B=Blue)
  • 10 bit per pixel (bpp) Format is the number of bits in each pixel. The higher the number, the sharper is the image

My screenshot is from a Workstation Graphics card (WX7100) and the purpose was to show you that the EDID you provided can actually output 10bpc. The problem you are experiencing could be related to the cable. Make sure you have the latest system BIOS for your B450 Aorus motherboard.

fsadough
Moderator
Moderator

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

You can't. As the name says, Radeon Pro Settings is for the ProGraphics. In other words you have to have a professional Graphicsc cards like Radeon Pro WX7100 in order to get Radeon Pro Settings installed on your system.

I explained the difference between 10bpc and 10bpp. Hopefully it is clear.

Your issue must be related to the cable, try an HDMI 2.0 Cable.

s4tch
Adept I

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

Thanks for the feedback. The motherboard has the latest bios. One would assume that monitor manufacturers provide a cable that is good enough to use the monitor at its full potential, but I'll get an other cable then. This one looks okay.

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s4tch
Adept I

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

Just got the cable from amazon I linked earlier, and nothing changed:

1.png

And now I can tell it was not the particular screen's fault earlier. As the previous monitor had a strong coil whine, I asked for a replacement from AOC. The new monitor arrived yesterday, so I have two of these screens at my disposal until the old screen isn't picked up by the courier. Unfortunately both of them are running at 8-bit with both the factory and the hi-speed cable.

As far as I can see, the new screen has the same edid as the previous one:

00 FF FF FF FF FF FF 00 05 E3 77 27 9D 00 00 00
32 1D 01 03 80 3C 22 78 2A 28 95 A7 55 4E A3 26
0F 50 54 2D 4B 00 D1 C0 81 80 81 40 95 0F 95 00
B3 00 81 C0 01 01 4D D0 00 A0 F0 70 3E 80 30 20
35 00 C0 1C 32 00 00 1A 00 00 00 FC 00 55 32 37
37 37 42 0A 20 20 20 20 20 20 00 00 00 10 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10
00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 B6
02 03 33 70 4C 90 04 03 1F 13 01 12 5D 5E 5F 60
61 23 09 07 07 83 01 00 00 6D 03 0C 00 10 00 38
78 20 00 60 01 02 03 67 D8 5D C4 01 78 80 03 E3
0F 00 0C 01 1D 00 72 51 D0 1E 20 6E 28 55 00 40
B4 10 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96
00 B4 78 00 00 00 18 4D 6C 80 A0 70 70 3E 80 30
20 3A 00 E0 1C 12 00 00 1A 04 74 00 30 F2 70 5A
80 B0 58 8A 00 C0 1C 32 00 00 1A 00 00 00 00 63

Latest 20.4.2 Radeon software, win10 fully updated. I still can't select 10 bpc mode, and screen is still running in 8-bit bit depth. Should I try an other cable? Which one exactly?

¯\_(ツ)_/¯

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fsadough
Moderator
Moderator

Re: Enable 10-bit color (Ryzen 3400G, AOC U2777PQU)

I suggest you file a support ticket with AMD. 

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