topic Random black screen @4k120 Intel Iris Xe in Graphics

Random black screen @4k120 Intel Iris Xe

Seech_Ipp — Mon, 17 Jan 2022 20:59:08 GMT

Hi,

I have a 17" LG Gram with an i7-1165G7 and Iris Xe graphics which I bought pre-loaded with Windows 10 and upgraded to Windows 11. I am having an issue when I attempt to run my high refresh rate 4K monitor at 120hz. I get random black screens, where my monitor will blink to black for a second or two then come back as if nothing happened.

Here are a few things I've tried without any success.

1. Re-installed graphics driver

2. Updated to the latest graphics driver

3. Turned off graphics acceleration in my browser. The black screen happened on both Chrome and Firefox and once I tested it a bit more thoroughly, I realized it happens when I'm using other apps as well.

4. Did a clean install of Windows 11.

The only thing which has worked is turning down the refresh rate to 60hz, which solves the problem. However, since I bought a high refresh rate monitor, I'd like to run it at 4k120 to reduce eyestrain, etc.

It's also worth noting that Windows 10 did exhibit some of this behavior but if I recall correctly only when using a browser so disabling hardware acceleration in the browser was the solution in that instance. It seems the problem has gotten worse with Windows 11.

One last note: I have a second monitor hooked up, 1080p + high refresh which has been rock solid all along. I do not keep the laptop screen on when I am using these two monitors.

If you have any ideas, it would be much appreciated!

Re:Random black screen @4k120 Intel Iris Xe

JosueO_Intel — Tue, 18 Jan 2022 18:47:31 GMT

Hello Seech_Ipp,

Thank you for posting on the Intel®️ communities. In order to have a better understanding of the issue, please share with us the following information:

Model of the display.
Port used to connect the display.
Graphics report, open the Intel® Graphics Command Center (IGCC), in order to get please open IGCC, go to the support tab, select system diagnostic, click "generate report", save the file and attach it to your response.

Also, please download and install the Intel®️ System Support Utility (Intel®️ SSU):

https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows-

Open the application and select "Everything" click on "Scan" to see the system and device information. By default, Intel®️ SSU will take you to the "Summary View". Click on the menu where it says "Summary" to change to "Detailed View".

Click on "Next", save the report and attach it to your response.

It is worth mentioning that the processor's maximum resolution and refresh rate via HDMI is 4096x2304@60Hz and via Display Port 7680x4320@60Hz. You can check this information on the following link:

https://ark.intel.com/content/www/us/en/ark/products/208662/intel-core-i71165g7-processor-12m-cache-up-to-4-70-ghz.html

Regards,

Josue O.

Intel Customer Support Technician

Re:Random black screen @4k120 Intel Iris Xe

JosueO_Intel — Fri, 21 Jan 2022 13:47:56 GMT

Hello Seech_Ipp,

Were you able to check the previous post?

Let us know if you still need assistance

Regards,

Josue O.

Intel Customer Support Technician

Re: Random black screen @4k120 Intel Iris Xe

Seech_Ipp — Fri, 21 Jan 2022 14:16:49 GMT

Apologies for the delay. Here are the answers to your questions:

Model of the display

27" Acer Predator XB273K Gpbmiipprzx

Here is the link from the manufacturer's site:

https://www.acer.com/ac/en/CA/content/predator-model/UM.HX3AA.P03

Port

I am using an 8K capable USB-C to DisplayPort cable so from that perspective bandwidth should not be an issue since it tops out at 48gbps. I have tried cables from two separate manufacturers, but the result is the same. I have used a similar cable to successfully run 4k120 on my TV from my desktop computer.

In terms of the capability of the Iris XE graphics on my LG laptop I did see the specifications listed above. My thought is that if it can handle 8K@60hz then 4K120 should not be an issue since the bandwidth requirements for both are probably around 40gbps. The Intel Graphics Command center offers 120hz as a setting in display properties at 4K resolution.

The two requested files are attached.

Re:Random black screen @4k120 Intel Iris Xe

JosueO_Intel — Fri, 21 Jan 2022 16:40:23 GMT

Hello Seech_Ipp,

Thank you for the information provided, based on the graphics report provided, you can see that the maximum support mode for your display is 3840 x 2160@60Hz. We understand the IGCC lets you select a higher refresh rate, however, it seems is not supported.

We would like to perform a test, we noticed that you have 3 displays connected at the same time which translates into more bandwidth consumption, please try disconnecting the 1080p display and test if you can maintain the 4K@120HZ without issues. Also, while the 1080p display is disconnected, please generate another graphics report and share it with us. this will allow us to look for alternatives and recommendations for the issue.

You can also try lowering the refresh rate of the 1080p display and check if you are able to maintain the high refresh rate on the 4K monitor.

We understand you are not using the embedded display, however, we would like to know if you disable it or if you just turn it off.

Also, do you know which is the Display Port version of your monitor?

Regards,

Josue O.

Intel Customer Support Technician

Re: Re:Random black screen @4k120 Intel Iris Xe

Seech_Ipp — Fri, 21 Jan 2022 23:50:47 GMT

I am not sure why IGCC reports the max refresh rate for 3840 x 2160 is 60hz because as you can see from the attached screen shots, Windows lists it 3840 x 2160 @ 119hz as a valid mode.

I am also not sure what you mean by turning off vs. disabling but I go into the graphics settings and set the laptop panel to "Disconnected" when I am connected to my external monitors. If you mean disabling it via Device Manager, I don't do that because I still want to be able to use my laptop as a laptop on occasion when I am away from my desk.

IGCC is also not reporting the number of connected monitors correctly. I am attaching the IGCC report with the secondary 1080p monitor set to disconnected and turned off, yet IGCC still reports both it and the laptop panel as active. My main monitor is set to 119hz. For the previous report I sent, it was only running at 60hz.

I will do some further testing using only my main monitor set to 119hz and the other two screens set to disconnected. Given all these inconsistencies between what IGCC is reporting and what Windows is showing, is it possible that this is a driver issue with multiple monitors?

Re: Random black screen @4k120 Intel Iris Xe

Alx24 — Sun, 23 Jan 2022 06:02:50 GMT

File: "Intel® Iris® Xᵉ Graphics - Friday, 21 January 2022.txt"

...

* Digital Display 3 *

Display Name: XB273K GP
Display Type: Digital
Serial Number: -
DDC2 Protocol: Supported
Gamma: 2.2
Connector Type: DisplayPort

Maximum Image Size
Horizontal - 23.62 inches
Vertical - 13.39 inches

Supported Modes
640 x 480 (60p Hz)
640 x 480 (75p Hz)
720 x 480 (60p Hz)
720 x 480 (60i Hz)
720 x 576 (50p Hz)
800 x 600 (56p Hz)
800 x 600 (60p Hz)
800 x 600 (75p Hz)
1024 x 768 (60p Hz)
1280 x 720 (50p Hz)
1280 x 720 (60p Hz)
1280 x 800 (60p Hz)
1280 x 960 (60p Hz)
1280 x 1024 (60p Hz)
1440 x 900 (60p Hz)
1680 x 1050 (60p Hz)
1920 x 1080 (50i Hz)
1920 x 1080 (50p Hz)
1920 x 1080 (60p Hz)
1920 x 1080 (60i Hz)
1920 x 1080 (120p Hz)
1920 x 1080 (144p Hz)
2560 x 1440 (120p Hz)
2560 x 1440 (144p Hz)
3840 x 2160 (24p Hz, 4K)
3840 x 2160 (25p Hz, 4K)
3840 x 2160 (30p Hz, 4K)
3840 x 2160 (50p Hz, 4K)
3840 x 2160 (60p Hz, 4K)

Power Management Support
Active Off Mode Supported

Raw EDID:
00 FF FF FF FF FF FF 00 04 72 1C 07 36 D6 90 04
31 1E 01 04 B5 3C 22 78 3B 3A D5 AE 4E 43 AA 26
0B 50 54 23 48 00 81 40 81 80 81 C0 81 00 95 00
B3 00 D1 C0 01 01 4D D0 00 A0 F0 70 3E 80 30 20
35 00 55 50 21 00 00 1A B4 66 00 A0 F0 70 1F 80
08 20 18 04 55 50 21 00 00 1A 00 00 00 FD 0C 30
90 FF FF 6B 01 0A 20 20 20 20 20 20 00 00 00 FC
00 58 42 32 37 33 4B 20 47 50 0A 20 20 20 02 62

02 03 43 F1 51 01 03 04 12 13 05 14 1F 90 07 02
5D 5E 5F 60 61 3F 23 09 07 07 83 01 00 00 E2 00
C0 6D 03 0C 00 20 00 38 78 20 00 60 01 02 03 68
1A 00 00 01 01 30 90 00 E3 05 E3 01 E6 06 07 01
61 56 1C 07 82 80 54 70 38 4D 40 08 20 F8 0C 56
50 21 00 00 1A 40 E7 00 6A A0 A0 6A 50 08 20 98
04 55 50 21 00 00 1A 6F C2 00 A0 A0 A0 55 50 30
20 35 00 55 50 21 00 00 1E 00 00 00 00 00 00 68

...

The "Raw EDID" of the display contains here a very complex design of completely identical blocks 1 and 2 (countdown from 0) and
this Intel Corp. software does not process, but performs simple straight-line processing. Therefore, such a strange not
true mode information directly as a result of the EDID processing of the display.

Supported Modes
...
1920 x 1080 (50i Hz)
1920 x 1080 (50p Hz)
1920 x 1080 (60p Hz)
1920 x 1080 (60i Hz)
1920 x 1080 (120p Hz)
1920 x 1080 (144p Hz)
2560 x 1440 (120p Hz)
2560 x 1440 (144p Hz)
3840 x 2160 (24p Hz, 4K)
3840 x 2160 (25p Hz, 4K)
3840 x 2160 (30p Hz, 4K)
3840 x 2160 (50p Hz, 4K)
3840 x 2160 (60p Hz, 4K)
...

Repository of EDIDs

https://github.com/linuxhw/EDID

shows that the EDIDs presented in it for Acer high-frequency displays "XB273K", "XB273K GP"
and all other high frequency of Acers there use "DisplayID" extension to describe the high-frequency 4K mode timings and this gives correct parsing result .

Also

https://www.acer.com/ac/en/CA/content/predator-model/UM.HX3AA.P03

Predator XB3

Model Name: XB273K GPBMIIPPRZX

Part Number: UM.HX3AA.P03

...

https://www.acer.com/ac/en/GB/content/predator-model/UM.HX3EE.P13

Predator XB3

Model Name: Predator XB273K GP

Part Number: UM.HX3EE.P13

...

The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.

1 Actual refresh rates may vary depending on model and/or region, computer specifications/hardware and/or set up.
////////////////////////////////////////////////////////////////////////////////
2 All models must be connected through DisplayPort 1.4.
////////////////////////////////////////////////////////////////////////////////
3 This device is designed to support refresh rate overclocking. However, overclocking may result in system instability. If you experience instability, try reducing the overclock to a lower refresh rate through the on-screen display settings.
4 Specifications may vary depending on model and/or region and are subject to availability and change without notice
5 Not native response time. Achieved via LCD overdrive.

File: "DigitalDisplay.md" in https://github.com/linuxhw/EDID

--------------------------------------------------------------------------------
| Acer | ACR06B0 | | 3840x2160 | 600x340mm | 27.2 | | E528DA6253DF |

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR06B0

...

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR06B0/E528DA6253DF

...

----------------

Block 2, DisplayID Extension Block:
Version: 1.3
Extension Count: 0
Display Product Type: Standalone display device
Display Interface Data Block:
Interface Type: DisplayPort
Number of Links: 4
Interface Standard Version: 1.4
Supported bpc for RGB encoding: 8, 10, 12
Supported bpc for YCbCr 4:4:4 encoding: 8, 10, 12
Supported bpc for YCbCr 4:2:2 encoding: 8, 10, 12
Supported Content Protection: HDCP 2.0
Spread Spectrum: Down Spread 0.5%
Color Characteristics Data Block:
Uses spatial color
Uses 1931 CIE (x, y) coordinates
Primary #0: (0.6790, 0.3098)
Primary #1: (0.2634, 0.6643)
Primary #2: (0.1504, 0.0417)
White point #0: (0.3127, 0.3291)
Video Timing Modes Type 1 - Detailed Timings Data Block:
DTD: 3840x2160 119.999407 Hz 16:9 268.559 kHz 1052.750000 MHz (aspect 16:9, no 3D stereo)
Hfront 8 Hsync 32 Hback 40 Hpol P
Vfront 3 Vsync 5 Vback 70 Vpol N
DTD: 3840x2160 97.970614 Hz 16:9 217.985 kHz 850.140000 MHz (aspect 16:9, no 3D stereo)
Hfront 8 Hsync 32 Hback 20 Hpol P
Vfront 3 Vsync 5 Vback 57 Vpol N
DTD: 3840x2160 81.936782 Hz 16:9 181.654 kHz 708.450000 MHz (aspect 16:9, no 3D stereo)
Hfront 8 Hsync 32 Hback 20 Hpol P
Vfront 3 Vsync 5 Vback 49 Vpol N
...

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR06B0/F0AAF23D777E

...

----------------

Block 2, DisplayID Extension Block:
Version: 1.3
Extension Count: 0
Display Product Type: Standalone display device
Display Interface Data Block:
Interface Type: DisplayPort
Number of Links: 4
Interface Standard Version: 1.4
Supported bpc for RGB encoding: 8, 10, 12
Supported bpc for YCbCr 4:4:4 encoding: 8, 10, 12
Supported bpc for YCbCr 4:2:2 encoding: 8, 10, 12
Supported Content Protection: HDCP 2.0
Spread Spectrum: Down Spread 0.5%
Color Characteristics Data Block:
Uses spatial color
Uses 1931 CIE (x, y) coordinates
Primary #0: (0.6819, 0.3091)
Primary #1: (0.2646, 0.6665)
Primary #2: (0.1509, 0.0422)
White point #0: (0.3127, 0.3291)
Video Timing Modes Type 1 - Detailed Timings Data Block:
DTD: 3840x2160 119.999407 Hz 16:9 268.559 kHz 1052.750000 MHz (aspect 16:9, no 3D stereo)
Hfront 8 Hsync 32 Hback 40 Hpol P
Vfront 3 Vsync 5 Vback 70 Vpol N
DTD: 3840x2160 97.970614 Hz 16:9 217.985 kHz 850.140000 MHz (aspect 16:9, no 3D stereo)
Hfront 8 Hsync 32 Hback 20 Hpol P
Vfront 3 Vsync 5 Vback 57 Vpol N
DTD: 3840x2160 81.936782 Hz 16:9 181.654 kHz 708.450000 MHz (aspect 16:9, no 3D stereo)
Hfront 8 Hsync 32 Hback 20 Hpol P
Vfront 3 Vsync 5 Vback 49 Vpol N

...

| Acer | ACR06B0 | XB273K | 3840x2160 | 600x340mm | 27.2 | | F0AAF23D777E |
--------------------------------------------------------------------------------

"Product Code: 71C" Seech_Ipp display

71Ch,d 1820

"Model: 1820" here

--------------------------------------------------------------------------------
| Acer | ACR071C | XB273K GP | 3840x2160 | 600x340mm | 27.2 | 2020 | 099773E7CA44 |

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR071C

...

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR071C/099773E7CA44

edid-decode (hex):

00 ff ff ff ff ff ff 00 04 72 1c 07 73 8f 51 01
0f 1e 01 04 b5 3c 22 78 3b 3a d5 ae 4e 43 aa 26
0b 50 54 23 48 00 81 40 81 80 81 c0 81 00 95 00
b3 00 d1 c0 01 01 4d d0 00 a0 f0 70 3e 80 30 20
35 00 55 50 21 00 00 1a b4 66 00 a0 f0 70 1f 80
08 20 18 04 55 50 21 00 00 1a 00 00 00 fd 0c 30
90 ff ff 6b 01 0a 20 20 20 20 20 20 00 00 00 fc
00 58 42 32 37 33 4b 20 47 50 0a 20 20 20 02 d0

02 03 43 f1 51 01 03 04 12 13 05 14 1f 90 07 02
5d 5e 5f 60 61 3f 23 09 07 07 83 01 00 00 e2 00
c0 6d 03 0c 00 10 00 38 78 20 00 60 01 02 03 68
1a 00 00 01 01 30 90 00 e3 05 e3 01 e6 06 07 01
61 56 1c 07 82 80 54 70 38 4d 40 08 20 f8 0c 56
50 21 00 00 1a 40 e7 00 6a a0 a0 6a 50 08 20 98
04 55 50 21 00 00 1a 6f c2 00 a0 a0 a0 55 50 30
20 35 00 55 50 21 00 00 1e 00 00 00 00 00 00 78

70 12 79 00 00 03 01 28 9a a0 01 84 ff 0e a0 00
2f 80 21 00 6f 08 3e 00 03 00 05 00 e0 f6 00 04
7f 07 59 00 2f 80 1f 00 6f 08 19 00 01 00 03 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 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 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 35 90

----------------

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.4
  Vendor & Product Identification:
    Manufacturer: ACR
    Model: 1820
    Serial Number: ...
    Made in: week 15 of 2020
  Basic Display Parameters & Features:
    Digital display
    Bits per primary color channel: 10
    DisplayPort interface
    Maximum image size: 60 cm x 34 cm
    Gamma: 2.20
    DPMS levels: Off
    Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2
    First detailed timing includes the native pixel format and preferred refresh rate
    Display is continuous frequency

...

Detailed Timing Descriptors:
DTD 3: 1920x1080 143.563349 Hz 16:9 166.103 kHz 332.870000 MHz (598 mm x 336 mm)
Hfront 8 Hsync 32 Hback 44 Hpol P
Vfront 63 Vsync 8 Vback 6 Vpol N
DTD 4: 2560x1440 143.632286 Hz 16:9 222.056 kHz 592.000000 MHz (597 mm x 336 mm)
Hfront 8 Hsync 32 Hback 66 Hpol P
Vfront 25 Vsync 8 Vback 73 Vpol N
DTD 5: 2560x1440 119.997589 Hz 16:9 182.996 kHz 497.750000 MHz (597 mm x 336 mm)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 5 Vback 77 Vpol P
Checksum: 0x78

----------------

Block 2, DisplayID Extension Block:
Version: 1.2
Extension Count: 0
Display Product Type: Extension Section
Video Timing Modes Type 1 - Detailed Timings Data Block:
DTD: 3840x2160 119.910418 Hz 16:9 266.561 kHz 1066.510000 MHz (aspect 16:9, no 3D stereo, preferred)
Hfront 48 Hsync 34 Hback 79 Hpol P
Vfront 4 Vsync 6 Vback 53 Vpol N
DTD: 1920x2160 143.839358 Hz 16:9 314.433 kHz 632.010000 MHz (aspect 16:9, no 3D stereo)
Hfront 48 Hsync 32 Hback 10 Hpol P
Vfront 2 Vsync 4 Vback 20 Vpol N
Checksum: 0x35

...

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR071C/CFB36E707B9B

edid-decode (hex):

00 ff ff ff ff ff ff 00 04 72 1c 07 92 25 01 01
0a 1e 01 04 b5 3c 22 78 3b 3a d5 ae 4e 43 aa 26
0b 50 54 23 48 00 81 40 81 80 81 c0 81 00 95 00
b3 00 d1 c0 01 01 4d d0 00 a0 f0 70 3e 80 30 20
35 00 55 50 21 00 00 1a b4 66 00 a0 f0 70 1f 80
08 20 18 04 55 50 21 00 00 1a 00 00 00 fd 0c 30
90 ff ff 6b 01 0a 20 20 20 20 20 20 00 00 00 fc
00 58 42 32 37 33 4b 20 47 50 0a 20 20 20 02 70

02 03 43 f1 51 01 03 04 12 13 05 14 1f 90 07 02
5d 5e 5f 60 61 3f 23 09 07 07 83 01 00 00 e2 00
c0 6d 03 0c 00 20 00 38 78 20 00 60 01 02 03 68
1a 00 00 01 01 30 90 00 e3 05 e3 01 e6 06 07 01
61 56 1c 07 82 80 54 70 38 4d 40 08 20 f8 0c 56
50 21 00 00 1a 40 e7 00 6a a0 a0 6a 50 08 20 98
04 55 50 21 00 00 1a 6f c2 00 a0 a0 a0 55 50 30
20 35 00 55 50 21 00 00 1e 00 00 00 00 00 00 68

70 12 79 00 00 03 01 28 9a a0 01 84 ff 0e a0 00
2f 80 21 00 6f 08 3e 00 03 00 05 00 e0 f6 00 04
7f 07 59 00 2f 80 1f 00 6f 08 19 00 01 00 03 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 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 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 35 90

----------------

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.4
  Vendor & Product Identification:
    Manufacturer: ACR
    Model: 1820
    Serial Number: ...
    Made in: week 10 of 2020
  Basic Display Parameters & Features:
    Digital display
    Bits per primary color channel: 10
    DisplayPort interface
    Maximum image size: 60 cm x 34 cm
    Gamma: 2.20
    DPMS levels: Off
    Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2
    First detailed timing includes the native pixel format and preferred refresh rate
    Display is continuous frequency

...

----------------

...

--------------------------------------------------------------------------------

Also, the frequencies of "1066.510000 MHz" exceed 600 MHz for HDMI.

You may be able to select a different display identification option from the display menu (some displays may provide different EDIDs depending on the settings) or contact Acer.

There is

https://docs.microsoft.com/en-us/windows-hardware/drivers/display/overriding-monitor-edids

"Manufacturer override of monitor EDIDs"

Of course, what matters is the USB-C to DisplayPort adapter used.

--------------------------------------------------------------------------------

Without any questions in EDID of your display

...

Header Information
Valid Checksum: TRUE
EDID Header: OK
EISA ID: ACR
Product Code: 71C
Serial Number: 76600886
Manufacture Date: 49/2020
EDID Version: 1.4

Number of Extensions: 2
Checksum: 0x62

...

Standard "Detailed Timing Descriptor" in Block 0 (59 Hz, 30 Hz)

(533250000 / (3840.0 + 160)) / (2160 + 62) - 59.996624662466 Hz

Detailed Timing Descriptor
Pixel Clock: 533.25MHz
Horizontal Active: 3840
Horizontal Blanking: 160
Vertical Active: 2160
Vertical Blanking: 62
Horizontal Sync Offset: 48
Horizontal Sync Pulse: 32
Vertical Sync Offset: 3
Vertical Sync Pulse: 5
Horizontal Display Size: 597
Vertical Display Size: 336
Horizontal Border: 0
Vertical Border: 0
Interlaced: false
Stereo Mode: 0
Sync Type: 3

(262920000 / (3840.0 + 160)) / (2160 + 31) - 30.000000000000 Hz

Detailed Timing Descriptor
Pixel Clock: 262.92MHz
Horizontal Active: 3840
Horizontal Blanking: 160
Vertical Active: 2160
Vertical Blanking: 31
Horizontal Sync Offset: 8
Horizontal Sync Pulse: 32
Vertical Sync Offset: 17
Vertical Sync Pulse: 8
Horizontal Display Size: 597
Vertical Display Size: 336
Horizontal Border: 0
Vertical Border: 0
Interlaced: false
Stereo Mode: 0
Sync Type: 3

////////////////////////////////////////////////////////////////////////////////

High resolution VIC's modes in EDID and in file: "Intel® Iris® Xᵉ Graphics - Friday, 21 January 2022.txt"

...

VIC: 93

Format: 3840x2160p
Field Rate: 23.98Hz/24Hz
Picture AR: 16:9
Pixel AR: 1:1
Native: FALSE

VIC: 94
Format: 3840x2160p
Field Rate: 25Hz
Picture AR: 16:9
Pixel AR: 1:1
Native: FALSE

VIC: 95
Format: 3840x2160p
Field Rate: 29.97Hz/30Hz
Picture AR: 16:9
Pixel AR: 1:1
Native: FALSE

VIC: 96
Format: 3840x2160p
Field Rate: 50Hz
Picture AR: 16:9
Pixel AR: 1:1
Native: FALSE

VIC: 97
Format: 3840x2160p
Field Rate: 59.94Hz/60Hz
Picture AR: 16:9
Pixel AR: 1:1
Native: FALSE

VIC: 63
Format: 1920x1080p
Field Rate: 119.88/120Hz
Picture AR: 16:9
Pixel AR: 1:1

...

////////////////////////////////////////////////////////////////////////////////

Valid high frequency mode for immediate testing with this adapter and display

1920 x 1080 (120p Hz)

Resolution 1920 x 1080 (120p Hz) is visual suitable for 27" 4K display.

Under discussion:

https://community.acer.com/en/discussion/585516/help-requested-cant-set-acer-predator-xb3-xb273k-gpbmiipprzx-to-4k-144hz

"[Help requested] Can't set Acer Predator XB3 (XB273K GPbmiipprzx) to 4k 144hz"

--------------------------------------------------------------------------------

Comparing with the data of similar displays in the github repository, it can be assumed that
this display cannot present the correct data in the last EDID block with "DisplayID"
and information about 4K high-frequency modes.

Alx24.

Re: Random black screen @4k120 Intel Iris Xe

Alx24 — Mon, 24 Jan 2022 10:40:01 GMT

In correct EDID of display XB273K GPBMIIPPRZX 4K at 119 Hz "Pixel Clock" 1066.510000 MHz

DTD: 3840x2160 119.910418 Hz 16:9 266.561 kHz 1066.510000 MHz

but

https://www.intel.com/content/www/us/en/products/docs/processors/core/core-technical-resources.html

"Technical Resources: Intel® Core™ Processors"

for highest resolution 5120 x 3200 (16:10) at 60 Hz "Pixel Clock" 1042.5 MHz.

--------------------------------------------------------------------------------

https://compatibleproducts.intel.com

https://compatibleproducts.intel.com/ProductDetails?prodSearch=True&searchTerm=NUC11PAHi5

https://compatibleproducts.intel.com/ProductDetails?prodSearch=True&searchTerm=NUC11PAHi7

...

Monitors : ( 10 )

...

LG 34-inch 5K IPS LED 34WK95U-W Intel Validated

( 5120 x 2180 at 60 Hz - tested )

...

The best case would be when it would be possible to achieve the correct EDID of the display
and proper operation in high-frequency 4K modes, but having the right EDID can
also use "Custom Resolution".

Alx24.

Re:Random black screen @4k120 Intel Iris Xe

DeividA_Intel — Wed, 26 Jan 2022 05:10:36 GMT

Hello Seech_Ipp,

I do appreciate all the information provided, however, to proceed further I would like to consider the results of your tests.

I will be waiting for these results.

Regards,

Deivid A.

Intel Customer Support Technician

Re: Random black screen @4k120 Intel Iris Xe

Alx24 — Wed, 26 Jan 2022 07:54:39 GMT

https://www.intel.com/content/www/us/en/support/articles/000025675/graphics.html

"Maximum Resolutions Supported in a Three Display Configuration"

Alx24.

Re: Random black screen @4k120 Intel Iris Xe

Seech_Ipp — Wed, 26 Jan 2022 14:07:08 GMT

Hi Deivid,

I am not sure which tests you are referring to. If you mean turning off my second monitor, I did do that. For the span of time that I tested running only my 4K monitor at 120hz, everything was fine. The issue I described above happens when I connect the second monitor and still attempt to run my primary monitor at 120hz. Reducing the frequency of the primary monitor to 60hz eliminates the blinking.

Hi Alx24,

Thanks for digging into this. Just to clarify, I am not running a triple monitor setup. Here is my configuration:

Primary monitor

27" Acer Predator XB273K 4K gaming monitor connected via USB-C to Displayport cable, capable of 8K 48gbps bandwidth

Secondary Monitor

24" Asus VG249 1080p gaming monitor connected via a standard HDMI cable

My laptop display is not connected, despite what the attached files report. That's why I believe there is a discrepancy in what the Intel driver is reporting and what I am actually running. I also thought about custom resolutions but unfortunately IGCC doesn't allow me to also set custom refresh rates. In terms of an INF file for my monitor, I wondered about that as well but one doesn't exist as far as I can tell.

Re: Random black screen @4k120 Intel Iris Xe

Alx24 — Thu, 27 Jan 2022 10:59:48 GMT

My link besides interesting and official information means that the frequency of 120Hz for 4K is possible in multi-monitor configuration:

https://www.intel.com/content/www/us/en/support/articles/000025675/graphics.html

As detailed by me above in https://community.intel.com/t5/Graphics/Random-black-screen-4k120-Intel-Iris-Xe/m-p/1353676#M104956

file: "Intel® Iris® Xᵉ Graphics - Friday, 21 January 2022.txt" ( Last Version )

contains an incorrect "Raw EDID" with two identical pre last and last block

* Digital Display 1 *

Display Name: XB273K GP
Display Type: Digital
Serial Number: -
DDC2 Protocol: Supported
Gamma: 2.2
Connector Type: DisplayPort

Maximum Image Size
Horizontal - 23.62 inches
Vertical - 13.39 inches

,,,

Raw EDID:
00 FF FF FF FF FF FF 00 04 72 1C 07 36 D6 90 04
31 1E 01 04 B5 3C 22 78 3B 3A D5 AE 4E 43 AA 26
0B 50 54 23 48 00 81 40 81 80 81 C0 81 00 95 00
B3 00 D1 C0 01 01 4D D0 00 A0 F0 70 3E 80 30 20
35 00 55 50 21 00 00 1A B4 66 00 A0 F0 70 1F 80
08 20 18 04 55 50 21 00 00 1A 00 00 00 FD 0C 30
90 FF FF 6B 01 0A 20 20 20 20 20 20 00 00 00 FC
00 58 42 32 37 33 4B 20 47 50 0A 20 20 20 02 62

...

which leads to incorrectness of the resolutions obtained from it with the absence of 3840 x 2160 at 120 Hz.

...

Supported Modes

...

1920 x 1080 (50i Hz)
1920 x 1080 (50p Hz)
1920 x 1080 (60p Hz)
1920 x 1080 (60i Hz)
1920 x 1080 (120p Hz)
1920 x 1080 (144p Hz)
2560 x 1440 (120p Hz)
2560 x 1440 (144p Hz)
3840 x 2160 (24p Hz, 4K)
3840 x 2160 (25p Hz, 4K)
3840 x 2160 (30p Hz, 4K)
3840 x 2160 (50p Hz, 4K)
3840 x 2160 (60p Hz, 4K)

In this case, you can get 1920x1080 at 120 Hz and apparently 2560x1440 at 120 Hz.

In the EDID repository on "github" I found an analogue of your monitor with the correct EDID and you can

make sure that the initial unit in both cases is very similar except for the date of manufacture,

and the subsequent block seems to be identical. And here is the last block of two monitors on

"github" in the format "DisplayID" correctly describes 4K @ 120 Hz,

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR071C

70 12 79 00 00 03 01 28 9a a0 01 84 ff 0e a0 00
2f 80 21 00 6f 08 3e 00 03 00 05 00 e0 f6 00 04
7f 07 59 00 2f 80 1f 00 6f 08 19 00 01 00 03 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 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 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 35 90

and for your monitor it is simple an exact copy of the pre last block, so there is no data for 4K @ 120 Hz.

For this, it is best to contact Acer with this data, although in any case because of this EDID, it will not be possible to get 4K @ 120 Hz in other conditions. There is a possibility that it will work correctly for example with another power source.

Another option for using the correct EDID:

https://docs.microsoft.com/en-us/windows-hardware/drivers/display/overriding-monitor-edids

"Manufacturer override of monitor EDIDs"

or "Custom Resolution" in IGCC or Control Panel (There is correct data from "github") "Basic", "Advanced".

The correct EDID of the display should be like the correct analogues on the "github" and you can always control it yourself by the resulting text file for graphics.

There is monitor driver

https://www.acer.com/ac/en/CA/content/support-product/8812?b=1

"Monitor_Acer_1.0_W7x86W7x64W8x86W8x64W81x86W81x64W10x86W10x64_A.zip"

with some information in "XB273K GP.inf"

...

[071C_DP.AddReg]
HKR,"MODES\3840,2160",Mode1,,"510.0-510.0,48.0-144.0,+,+"
HKR,,MaxResolution,,"3840,2160"
HKR,,DP2MS,,1
HKR,,ICMProfile,0,"XB273K GP.icm"

[071C_DP2.AddReg]
HKR,"MODES\3840,2160",Mode1,,"510.0-510.0,48.0-120.0,+,+"
HKR,,MaxResolution,,"3840,2160"
HKR,,DP2MS,,1
HKR,,ICMProfile,0,"XB273K GP.icm"

[071C_HDMI2.0.AddReg]
HKR,"MODES\3840,2160",Mode1,,"30.0-160.0,40.0-60.0,+,+"
HKR,,MaxResolution,,"3840,2160"
HKR,,DP2MS,,1
HKR,,ICMProfile,0,"XB273K GP.icm"

...

Actually model "071C" as in:

https://github.com/linuxhw/EDID/blob/master/Digital/Acer/ACR071C

71Ch,d 1820

"Model: 1820" in "github" EDID's.

In Windows Registry ( Regedit.exe ) of your computer must be

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY\ACR071C ... EDID

and this EDID as in your report text file ( first block in Windows 10 and all 3 blocks in Windows 11 )

( Not changeable here in-place because Windows uses internal EDID )

There is link to user manual:

https://global-download.acer.com/GDFiles/Document/User%20Manual/User%20Manual_Acer_1.0_A_A.pdf?acerid=637467236236474625&Step1=MONITOR&Step2=PREDATOR&Step3=XB273KGP&OS=ALL&LC=en&BC=ACER&SC=PA_4

(XB273K xxxxxx)

--------------------------------------------------------------------------------

https://www.dell.com/community/XPS/4K-at-120Hz-on-XPS-9300-WD19TB-Acer-XB273K-4K144hz/td-p/8062161

4K at 120Hz on XPS 9300 / WD19TB / Acer XB273K(4K144hz)

"
jphughan
7 Thorium
‎10-28-2021 01:07 PM
@homeostasis The system and dock both support DP 1.4, so if the display does as well, then you should be able to run at least 4K 120 Hz over a single connection. According to the display's user guide, 144 Hz requires you to enable overclocking in the display's on-screen menu. That said, I remember multiple threads about users not being able to run dual 4K 60 Hz from an XPS 13 9300 connected to a WD19TB, even though that is definitely supposed to work. So if that still hasn't been fixed (not sure about that since it's been a while), a 4K 120 Hz setup may be similarly problematic. If you've already updated the Intel Graphics drivers along with the firmware you mentioned, then my only suggestion as a workaround would be to try a USB-C to DP 1.4 cable connected directly to the system just to see if that gives you 4K 120 Hz. If it does, then you could also try connecting that to the rear USB-C port on the dock near the HDMI output (not to be confused with the downstream TB3 port near the end of the dock where the system cable attaches). That shouldn't make a difference, but I've had people encounter trouble trying to use DP/HDMI outputs on that dock for display setups that should work that way and then find that it worked fine when they switched to the USB-C/TB3 outputs. I realize that at the end of the day, this still amounts to a workaround, but if your drivers and firmware are up to date and you've got cables rated for DP 1.4, then this should be working. So given that it's not, the only thing I can suggest is a workaround."

"According to the display's user guide, 144 Hz requires you to enable overclocking in the display's on-screen menu." This may give different EDID.

--------------------------------------------------------------------------------

Alx24.

Re:Random black screen @4k120 Intel Iris Xe

JosueO_Intel — Thu, 27 Jan 2022 21:30:39 GMT

Hello Seech_Ipp,

Thank you for the information provided, based on the testing performed by disconnecting the second monitor, we can confirm that driver is working as it should and the adapter as well even though it will be worth testing a different adapter USB C to DP (High quality certified) to rule out any issue with it nevertheless we always recommend straight connections since some adapter could affect but as mentioned, the adapter seems to be well considering that monitor works well when is connected alone.

However, taking into consideration that when the monitor is capable to get the desired configuration when it is the only one connected to the laptop, our recommendation is to check with LG support due to OEMs being able to customize their systems and change certain configurations to make them work in a specific way. They may have specific configurations for your system to be able to work with the desired configuration, also, they can clarify if they have any restrictions for using displays on their product.

Regards,

Josue O.

Intel Customer Support Technician

Re: Random black screen @4k120 Intel Iris Xe

Seech_Ipp — Fri, 28 Jan 2022 23:49:34 GMT

As I mentioned above, I have already tried switching cables and it didn't help. I am trying to understand why the Iris Xe chipset behaves the way it does in a multi-monitor setup. If the graphics chip is capable of driving my 4K monitor at 120hz, why can't it do the same in the multi-monitor configuration?

Re: Random black screen @4k120 Intel Iris Xe

Alx24 — Sat, 29 Jan 2022 16:47:52 GMT

In the file "Intel® Iris® Xe Graphics - Friday, 21 January 2022.txt" you can see that in the "Raw EDID" of the display there is no data "Detailed Timing Descriptor (DTD)" for 4K @ 120Hz mode and this mode is not set normally. Above were the correct EDID's of displays from "github" of the same model ACR071C with DTD for 3840x2160 at 120 Hz.
Graphics report "Intel® Iris® Xᵉ Graphics - Friday, 21 January 2022.txt" for only single external display "Acer XB273K GP" is very interesting (USB-C to DisplayPort). And same at only its single HDMI connection to computer. Memory performances for multimonitor are very high.

----------

File: "System Support Utility Detailed Diagnostic.txt"

...

Card name: Intel(R) Iris(R) Xe Graphics
Manufacturer: Intel Corporation
Chip type: Intel(R) Iris(R) Xe Graphics Family
DAC type: Internal
Device Type: Full Device (POST)
Device Key: Enum\PCI\VEN_8086&DEV_9A49&SUBSYS_04021854&REV_01
Device Status: 0180200A [DN_DRIVER_LOADED|DN_STARTED|DN_DISABLEABLE|DN_NT_ENUMERATOR|DN_NT_DRIVER]
Device Problem Code: No Problem
Driver Problem Code: Unknown
Display Memory: 8174 MB
Dedicated Memory: 128 MB
Shared Memory: 8046 MB
Current Mode: 3840 x 2160 (32 bit) (60Hz)
HDR Support: Supported
Display Topology: External
Display Color Space: DXGI_COLOR_SPACE_RGB_FULL_G22_NONE_P709
Color Primaries: Red(0.679688,0.307617), Green(0.263672,0.666016), Blue(0.151367,0.043945), White Point(0.313477,0.329102)
Display Luminance: Min Luminance = 0.049100, Max Luminance = 408.760010, MaxFullFrameLuminance = 322.118195
Monitor Name: Generic PnP Monitor
Monitor Model: XB273K GP
Monitor Id: ACR071C
Native Mode: 3840 x 2160(p) (59.997Hz)

Output Type: Displayport External

...

Another simple way to get display model number is in files U1.jpg - U9.jpg.

Alx24.

Re: Random black screen @4k120 Intel Iris Xe

Seech_Ipp — Sat, 29 Jan 2022 17:31:21 GMT

Hi Alx24,

I already checked Device Manager as you indicated and my monitor model is indeed ACR071C. Acer has a very confusing model lineup with monitors under the XB273 umbrella having different capabilities. Mine is a G-sync compatible model but there are others which are FreeSync.

I did the exercise above since I wanted to install the .INF file you posted and I did. It didn't help.

After doing some searching online, I see similar complaints from users with 4K monitors built by other manufacturers. These monitors are often connected to dedicated GPUs such as the nVidia RTX series. At this point I am wondering if this is a broader problem with Windows since my suspicion is that the blinking occurs when hardware acceleration turns either on or off. The Windows UI itself uses hardware acceleration and browsers do as well, though the latter can actually be disabled.

Re: Random black screen @4k120 Intel Iris Xe

Alx24 — Sat, 29 Jan 2022 23:25:42 GMT

For "USB-C to DisplayPort" is new

"DisplayPort Alt Mode version 2.0"

https://vesa.org/featured-articles/vesa-releases-updated-displayport-alt-mode-spec-to-bring-displayport-2-0-performance-to-usb4-and-new-usb-type-c-devices/
https://www.displayport.org/pr/vesa-releases-updated-displayport-alt-mode-spec-to-bring-displayport-2-0-performance-to-usb4-and-new-usb-type-c-devices/
https://www.displayspecifications.com/en/news/7576305

It all starts with the fact that for some reason the 4K display does not correctly transmit the data of the last EDID block with information for the mode 3840x2160 @ 120Hz when connected to the USB-C port. The easiest thing to do is to test this when connecting direct to HDMI output of the computer and get the report in a file type "Intel® Iris® Xe Graphics - Friday, 21 January 2022.txt".

Alx24.

Re:Random black screen @4k120 Intel Iris Xe

JosueO_Intel — Mon, 31 Jan 2022 17:42:23 GMT

Hello Seech_Ipp,

Thank you for the information provided, we understand that the display works fine by itself and that the issue is only when multiple monitors are connected, however, in this case, it is important to take into consideration that system manufacturers can change the way video ports work internally. Several customizations can be made that can affect the performance of the system.

In this case, because of all the customizations or restrictions OEMs can make to their systems, our recommendation is to contact LG directly and check with them for these customizations that could be affecting your system.

Regards,

Josue O.

Intel Customer Support Technician

Re:Random black screen @4k120 Intel Iris Xe

JosueO_Intel — Tue, 01 Feb 2022 13:47:27 GMT

Hello Seech_Ipp,

If you need any additional information, please submit a new question as this thread will no longer be monitored.

Regards,

Josue O.

Intel Customer Support Technician

Re: Random black screen @4k120 Intel Iris Xe

edechamps — Thu, 11 Aug 2022 23:16:10 GMT

I encountered this problem as well, and there are ways to fix it. I would strongly suggest affected people read my guide on how to get 4K120 to work with these GPUs. (I would have gladly posted that guide on this forum but I was unable to get through the antispam filter after numerous attempts.)