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lmancino
Adept III

RADEON PRO WX 7100 at 10bpc & BENQ SW271

I am not able to connect a BENQ SW271 (UHD 3840x2160) keeping 10bpc of Color Depth at 60hz and RGB 4:4:4 Full. In the Screen Control Panel of the Driver the resolution is forced at 8bpc. I can obtain 10bpc only at 30hz (not 50, or 59).

I verified the number of colors managed with the usual ramp.psd file, open in Photoshop, obtaining the confirmation of the resolutions showed in the driver panel.

The display is connected with a DP 1.4 cable (Purelink PI5010-020 certified for 8K at 60hz or 4K at 120hz with a maximum band of 32.4 Gbps).

In the Advanced Panel of Driver the 10 bit check box is flagged

The previous monitor was an ASUS PA249Q (FHD 1920x1200) working at 10bpc/60hz and full RGB 4:4:4.

I opened a ticket with BENQ Support (CETS#2019030131000962).

EDID Obtained with Monitor Info View

00000000  00 FF FF FF FF FF FF 00 09 D1 5F 7F 45 54 00 00    .........._ET..
00000010  1D 1C 01 04 B5 3C 22 78 3E 22 15 AC 51 35 B6 26    .....<"x>"..Q5.&
00000020  0E 50 54 A5 6B 80 D1 C0 81 C0 81 00 81 80 A9 C0    .PT.k...........
00000030  B3 00 01 01 01 01 4D D0 00 A0 F0 70 3E 80 30 20    ......M....p>.0
00000040  35 00 55 50 21 00 00 1A 00 00 00 FF 00 4D 37 4A    5.UP!........M7J
00000050  30 31 36 37 38 53 4C 30 0A 20 00 00 00 FD 00 18    01678SL0. ......
00000060  4B 1B 8C 3C 00 0A 20 20 20 20 20 20 00 00 00 FC    K..<..      ....
00000070  00 42 65 6E 51 20 53 57 32 37 31 0A 20 20 01 89    .BenQ SW271.  ..

Other component of setup

  • Motherboard ASUS Prime X370-PRO
  • Bios 4207
  • CPU Ryzen 1700
  • Power Supply Enermax Platimax 750 Watt
  • RAM 32 GB (2x16)
  • Windows 10 pro 64 bit 1809
55 Replies
elstaci
MVP

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

This thread doesn't concern Professional GPU Cards but it is similar as far as 10 bit not being enabled at 60 hz: https://community.amd.com/thread/236306 

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lmancino
Adept III

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

I opened this thread according to the indication of fsadough ( Re: amd wx 7100 10 bit dpc &amp; premiere pro cc 2018)

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elstaci
MVP

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

I know,  I was reading that thread. Just mentioned it because it is a bug for both Professional and Consumer GPU cards. Plus the OP also has BenQ Monitors that are 10 bit capable but the Driver only allow 8 bit at 60 hz.

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fsadough
Moderator
Moderator

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

Do you know how to emulate an EDID in Advanced Radeon Pro settings?

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lmancino
Adept III

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

No, I never did. Of course I am available to learn.

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fsadough
Moderator
Moderator

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

The EDID you provided shows your SW271 set to HD and not 4K and in that setting you should see 10bpc/HD/RGB 4:4:4. You can install Anydesk and provide me the number. I can log in to your system and take a look.SW271_RGB444_Full_10bpc.PNG

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lmancino
Adept III

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

This evening i will install Anydesk, providing you the access key with a PM, so tomorrow you will acces my system. I will disable the automatic suspend state (I think that it isn't necessary to disable the monitor suspend). I'am pretty sure that Advanced System settings of Windows returned  me correct information regarding resolution, refresh rate and Bit depth, anyway i will verify.

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lmancino
Adept III

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

These are the informations showed

pastedImage_1.png

and this is EDID provided by driver and not by Info Monitor View as in the first post

00 FF FF FF FF FF FF 00 09 D1 5F 7F 45 54 00 00
1D 1C 01 04 B5 3C 22 78 3E 22 15 AC 51 35 B6 26
0E 50 54 A5 6B 80 D1 C0 81 C0 81 00 81 80 A9 C0
B3 00 01 01 01 01 4D D0 00 A0 F0 70 3E 80 30 20
35 00 55 50 21 00 00 1A 00 00 00 FF 00 4D 37 4A
30 31 36 37 38 53 4C 30 0A 20 00 00 00 FD 00 18
4B 1B 8C 3C 00 0A 20 20 20 20 20 20 00 00 00 FC
00 42 65 6E 51 20 53 57 32 37 31 0A 20 20 01 89
02 03 2E F1 56 61 60 5D 5E 5F 10 05 04 03 02 07
06 0F 1F 20 21 22 14 13 12 16 01 23 09 07 07 83
01 00 00 E6 06 05 01 60 5A 44 E3 05 C0 00 02 3A
80 18 71 38 2D 40 58 2C 45 00 55 50 21 00 00 1E
56 5E 00 A0 A0 A0 29 50 30 20 35 00 55 50 21 00
00 1A 8C 64 00 50 F0 70 1F 80 08 20 18 04 55 50
21 00 00 1A 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DD

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lmancino
Adept III

Re: RADEON PRO WX 7100 at 10bpc & BENQ SW271

Sent PM with access data for Anydesk

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