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17047 Discussions

Intel UHD Graphics 770 driver and Dell UP2414Q 4K monitor

Vitali
Beginner
15,692 Views

Could you please help me. When I connect via Display Port Dell UP2414Q monitor it operates OK at 4K with the refresh rate 30HZ. When I enable in the monitor menu DP1.2 setting (to set the monitor to 60HZ refresh rate, as per monitor manual), the screen splits into two separate sections in reverse order, and as for Windows 11 Pro settings, the monitor operates with the refresh rate 60HZ.

I believe the problem is with the Intel graphics driver or motherboard graphics settings, because when I connect the very same monitor to the display port output of Nvidia 1080TI card, the monitor operates at 4K 60HZ  with no problem - no split into half screen.

I have the following hardware: Intel Core i9-12900K, Asus ROG STRIX Z690-G Gaming Wi-Fi motherboard, Windows 11 Pro 64 bit, and graphics driver Version 30.0.101.1069 of 11/2/2021.

Might be I am wrong, and there are some settings in BIOS of my motherboard to properly set up the display port output of my motherboard? I was trying to find, but could not find such settings.

Excuse me for my poor English, as it is not my mother-tongue.

0 Kudos
45 Replies
Josue_O_Intel
Moderator
6,708 Views

Hello Vitali,  


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: 


  1. Was it working before?
  2. Have you tried different ports?
  3. Have you tried different cables?
  4. Have you checked the issue with the OEM?
  5. Picture of the issue.
  6. 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.



Regards, 


Josue O.  

Intel Customer Support Technician



Vitali
Beginner
6,688 Views

Hello,
There are two more computers in my house, one running with Nvidia Volta
graphics card under Ubuntu 18.04 and this monitor Dell UP2414Q operates at 4K
resolution 60 HZ refresh rate with no problems which-soever. It was connected
to mini display port of the monitor, and the other computer was connected to
standard display port of the same monitor simultaneously. The second computer
was running with Nvidia 1080 TI card under Windows 8.1 64 bit at 4K
resolution 60 HZ refresh rate with no problems which-soever.
1) With this computer - no, in 4K 60 HZ refresh rate
2) On the computer I tried the only port - Display port, as the monitor in
question has two display ports, which are both capable of 4K 60 HZ refresh rate
and one HDMI port version 1.3 which is only capable of 4K 30 HZ refresh rate.
I tried both ports on the monitor, the same result.
3) No, I used the very same cables which were supplied with the monitor, but I
used the very same cables on my other computers with Nvidia cards and this
monitor, which operated perfectly at 4K 60 HZ refresh rate.
4) No, as I assembled it myself.
5) I am attaching the pictures of the issue and reports as well.
6) I am generating two versions of each report - at 4K 30 HZ and at 4K 60 HZ
7) I am attaching a detailed information regarding the model and firmware
of the monitor

PS With this monitor in order to enable 4K 60 HZ refresh rate mode it is
necessary to enable DP 1.2 function in the menu bar of the monitor.
In the manual to this monitor is written, that in order to operate correctly
at 4K 60HZ the graphics card should correctly implement MST mode. In 60Hz
Display-Port 1.2 mode, the display uses "multi-stream transport" mode.
This effectively splits the video between two channels on the computer, and
rejoins them on the monitor. This is necessary because a single display
stream transport provides insufficient bandwidth to send the full frame
buffer 60 times per second.
This is one monitor, but actually inside it consists of two monitors, hence
the requirement for MST mode.

Josue_O_Intel
Moderator
6,686 Views

Hello Vitali, 


We recommend performing a clean install of the latest graphics drivers. Follow these steps:


Check Windows* updates:


• Click the Windows Start button. 

• Click the search and type Windows updates and click on that option.

• Select Check for Updates and ensure you have the latest Windows* version. 


Clean installation of the Graphics Driver:


1- Download the latest driver from our download center and save the installer on the computer.

https://www.intel.com/content/www/us/en/download/19344/intel-graphics-windows-dch-drivers.html


2- Disconnect from the internet to make sure the driver will not be automatically updated by Windows.

3- Uninstall the Intel Graphics driver. To do this, please follow the steps on the link below under these sections:


• Uninstalling the Intel Graphics Driver via the Device Manager Method

https://www.intel.com/content/www/us/en/support/articles/000005598/graphics.html


4- Restart the computer.

5- Right-click the Windows Start button. Select Device Manager.

6- If no older drivers are stored in the system, the graphics controller in Device Manager should now be listed as 'Microsoft Basic Display Adapter', 'Standard VGA Graphics Adapter', or similar. If not, repeat step 3. Repeat the process until it is listed as 'Microsoft Basic Display Adapter'.

7- Install the latest graphics driver provided by the system manufacturer.

8- Once the latest driver has been installed, enable the internet connection again.



Regards, 


Josue O.  

Intel Customer Support Technician




Vitali
Beginner
6,683 Views

I did everything as instructed. I uninstalled the previous device driver (I had to do it two times to revert to Microsoft Basic Display Adapter). What is interesting, with Microsoft Basic display driver, after reboot, I enabled dp1.2 in the monitor menu, and everything operated OK, no split screen, but when I looked at the graphics properties, the refresh rate was strange - 64 HZ (not 60 HZ). 

After installation of the latest Intel Driver immediately the problem reappeared - the same split screen at 60 HZ.

Josue_O_Intel
Moderator
6,676 Views

Hello Vitali, 


Thank you for the information provided 


I will proceed to check the issue internally and post back soon with more details. 



Regards, 


Josue O.  

Intel Customer Support Technician




Vitali
Beginner
6,673 Views
Josue_O_Intel
Moderator
6,637 Views

Hello Vitali,


Please try performing a clean installation of the graphics driver using the latest OEM driver, you can find it in the following link: 


https://rog.asus.com/motherboards/rog-strix/rog-strix-z690-g-gaming-wifi-model/helpdesk_download


Also, be sure to have the latest BIOS, firmware, and Intel ME installed on your system, you can find all these drivers and downloads in the following link from ASUS:


https://rog.asus.com/motherboards/rog-strix/rog-strix-z690-g-gaming-wifi-model/helpdesk_bios


In case after performing the updates the issue persists, share with us the following information:


  1. Are you using a straight DP to DP connection? Or are there any adapters in between?
  2. Is it possible to test another monitor in the system?



Regards, 


Josue O.  

Intel Customer Support Technician



Vitali
Beginner
6,644 Views

Hello Josue,

1) I am using straight DP to DP connection, no adapters in between, and I tried both DP inputs in my monitor with two different cables.

2) Unfortunately I do not have another 4K monitor, I can only try non-4K monitor.

3) Today I first changed the resolution of my monitor to 1080p and switched the monitor to 60 HZ  at this resolution. Immediately the same split screen, the same problem. After that I again reverted the monitor to 4K resolution 30 HZ.

4) After that  I tried the following: I completely uninstalled Intel driver, and tried again with Microsoft Basic Display Adapter driver. Everything worked perfectly regarding 4K 60 HZ refresh rate.

5) After that I have installed the latest beta Intel driver version  igfx_win_101.1121. After the installation of the beta driver I switched the monitor to 4K 60 HZ . Everything operated perfectly with the beta driver for about five minutes. Than I decided to reboot the system, and again at the log in screen the same problem with the split screen. I reverted to 30 HZ with this beta driver and at 30 HZ as before everything is OK. I live in the Ukraine, and now it is late at night (time difference). I will try installation of the latest Asus driver tomorrow, but may be the information I had provided would help to solve my problem

Sincerely,

Vitali

Josue_O_Intel
Moderator
6,631 Views

Hello Vitali,


Thank you for all the information provided, we will wait for you to be able to perform the steps we provided and test if the issue persists. 


Regards, 


Josue O.  

Intel Customer Support Technician



Vitali
Beginner
6,472 Views

Hello Josue,

I did everything you requested. With Asus video driver nothing changes, the same split screen.

Today I have done the following: I brought my monitor downstairs to my HTPC computer Zotac MAGNUS EC72070S with Zotac Nvidia 2070RTX super video card. This computer runs under Windows 10 64 bit. I connected it to display port of Zotac Nvidia video card, and it operates with no problems with 59 HZ refresh rate (I am attaching a photo). I believe the problem is with the video drivers of Intel UHD Graphics 770 in my new computer.

Moreover I found a piece of information at Reddit that in 2013 when my Dell monitor was introduced the very same problem with the split screen under 60 HZ existed with Nvidia cards under Ubuntu, and they found the solution (incorporating some changes in the driver), so that the problem with the split screen, Nvidia card and Dell monitor was resolved. But they did not discuss Windows, so I have no idea, if the same problem existed under Windows. But as soon as the monitor operates correctly now under Windows and Ubuntu, the proper changes have been incorporated.

Josue_O_Intel
Moderator
6,470 Views

Hello Vitali,


Thank you for all the information provided, we will further investigate the issue and post back soon with more details.


Regards, 


Josue O.  

Intel Customer Support Technician



Alx24
New Contributor I
6,418 Views

This is similar to the offset of the start of the frame-buffer scanning when output via video output to half of the screen.

Alx24.

Alx24
New Contributor I
6,414 Views

The file for 30 Hz "Report - Monday, 22 November 2021 at 30HZ.txt" contains "Detailed Timing Descriptor" for 4K at 29Hz and 30Hz. File for 60Hz with the extension block "DisplayID" "Report - Monday, 22 November 2021 at 60HZ.txt" will not be parsed by edidrider.com. Problems are possible in the period between frames.

Alx24.

Alx24
New Contributor I
6,376 Views

The file for 30 Hz "Report - Monday, 22 November 2021 at 30HZ.txt" contains "Detailed Timing Descriptor" for 4K at 29Hz and 30Hz
and these resolutions were added to the "Supported Modes" table at the end:

...

Supported Modes
640 x 480 (60p Hz)
640 x 480 (75p Hz)
720 x 400 (70p Hz)
720 x 480 (60p Hz)
720 x 480 (60i Hz)
720 x 576 (50i Hz)
720 x 576 (50p Hz)
800 x 600 (60p Hz)
800 x 600 (75p Hz)
1024 x 768 (60p Hz)
1024 x 768 (75p Hz)
1152 x 864 (75p Hz)
1280 x 720 (50p Hz)
1280 x 720 (60p Hz)
1280 x 800 (60p Hz)
1280 x 1024 (60p Hz)
1280 x 1024 (75p Hz)
1600 x 1200 (60p Hz)
1680 x 1050 (60p Hz)
1920 x 1080 (24p Hz)
1920 x 1080 (50i Hz)
1920 x 1080 (50p Hz)
1920 x 1080 (60p Hz)
1920 x 1080 (60i Hz)
1920 x 1200 (60p Hz)
2560 x 1440 (60p Hz)
////////////////////////////////////////////////////////////////////////////////
3840 x 2160 (30p Hz, 4K)
////////////////////////////////////////////////////////////////////////////////

...

File for 60Hz "Report - Monday, 22 November 2021 at 60HZ.txt" contains DTD in Block 0

Detailed Timing Descriptor
Pixel Clock: 277.25MHz
////////////////////////////////////////////////////////////////////////////////
Horizontal Active: 1920
////////////////////////////////////////////////////////////////////////////////
Horizontal Blanking: 160
////////////////////////////////////////////////////////////////////////////////
Vertical Active: 2160
////////////////////////////////////////////////////////////////////////////////
Vertical Blanking: 62
Horizontal Sync Offset: 48
Horizontal Sync Pulse: 32
Vertical Sync Offset: 3
Vertical Sync Pulse: 10
Horizontal Display Size: 527
Vertical Display Size: 296
Horizontal Border: 0
Vertical Border: 0
Interlaced: false
Stereo Mode: 0
Sync Type: 3

which adds a slightly strange (half of screen !!!) resolution to the "Supported Modes" table at the end

"1920 x 2160 (60p Hz)"

...

Supported Modes
640 x 480 (60p Hz)
640 x 480 (75p Hz)
720 x 400 (70p Hz)
800 x 600 (60p Hz)
800 x 600 (75p Hz)
1024 x 768 (60p Hz)
1024 x 768 (75p Hz)
1152 x 864 (75p Hz)
1280 x 800 (60p Hz)
1280 x 1024 (60p Hz)
1280 x 1024 (75p Hz)
1600 x 1200 (60p Hz)
1680 x 1050 (60p Hz)
1920 x 1080 (60p Hz)
1920 x 1200 (60p Hz)
////////////////////////////////////////////////////////////////////////////////
1920 x 2160 (60p Hz)
////////////////////////////////////////////////////////////////////////////////

The extension block Block 1 "DisplayID" nothing else adds to the table "Supported Modes"
and no resolution at all 4K.

Alx24.

Vitali
Beginner
6,372 Views

Hello Alx24, thank You for your help. I found in the internet the following information:

1) Dell UP2414Q is a dual tile display. Due to the MST implementation it is detected as 2 screens, each running
1920x2160x60Hz and then stitched together by the driver.

2) In the latest version of the Dell manual it is noted that:

NOTE: Ensure that your graphics card driver can
support DP1.2 with MST feature, capable of
displaying 3840 x 2160 at 60Hz and its driver
supports DisplayID v1.3, or the display may not
show correctly.

3) If I understand correctly, in order to operate as it should, the changes should be incorporated into the Intel driver.

4) I found out, that the proper changes were incorporated into Nvidia drivers several years ago.

Alx24
New Contributor I
6,368 Views

The DisplayID standard began to be used as necessary to describe tiled display.
Corporations at one time announced their support for it, and it already has several versions.
Here, the beginning of Block 1 (zero countdown) "70 12" means version 1.2.
Here the DisplayID should indicate the coordinates of the two parts of the screen and of course, the correct one should be specified
the resulting resolution in the table "Supported Modes" is a standard common task.

Alx24.

Vitali
Beginner
5,825 Views

Hello,

I was informed that in Intel UHD Graphics driver is used DisplayID2.0 version but I am not 100% sure about that.

 

https://en.wikipedia.org/wiki/DisplayID

 

I wonder which is the version of DisplayID supported by the current Intel driver? And is my problem related to the incorrect DisplayID version support?

Thank You!

Alx24
New Contributor I
5,549 Views

The huge amount of EDID on the https://github.com/linuxhw/EDID shows that manufacturers of
displays use a very complex DisplayID standard to avoid problems for consumers only in
the most extreme case is like the EDID expansion blocks with the first byte of 70h, and the new version 2 has not yet been encountered. As is always the case, the first option is followed by a much more advanced second, but in the case of DisplayID between 1.x and 2.x, there are no radical differences and the field 0x12 corresponds to the 0x28. There are already beta drivers, but this may internally take some time. Information about new driver features is usually indicated in the accompanying information.

Alx24.

Alx24
New Contributor I
5,953 Views

The next Dell UP3218K 8K tiled display uses a similar approach using DisplayID

https://michael.stapelberg.ch/posts/2017-12-11-dell-up3218k/

https://michael.stapelberg.ch/dell-up3218k/edid.hex.txt

edid.hex.txt

https://michael.stapelberg.ch/dell-up3218k/edid-decode.txt

edid-decode.txt

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

...

DisplayID extension block
Extension version: 18
Length 121, version 18, extension count 0
tiled display block: capabilities 0x00000082
////////////////////////////////////////////////////////////////////////////////
num horizontal tiles 2, num vertical tiles 1
tile location (0, 0)
tile dimensions (3840, 4320)
////////////////////////////////////////////////////////////////////////////////

...

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

Because in DTD (Detailed Timing Data) the resolution values are set aside 8 + 4 = 12 bits (0-4095)
then for the resolution of 8K you have to use DisplayID

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

...

Type 1 detailed timing: aspect: 16:9, Preferred
Detailed mode: Clock 1030.240 MHz, 0 mm x 0 mm
7679 7708 7717 7878
4319 4321 4325 4366
+hsync -vsync
Type 1 detailed timing: aspect: 16:9, Preferred
Detailed mode: Clock 826.250 MHz, 0 mm x 0 mm
7679 7726 7757 7878
4319 4321 4325 4367
+hsync -vsync
Type 1 detailed timing: aspect: 16:9,
Detailed mode: Clock 856.720 MHz, 0 mm x 0 mm
3839 3886 3917 4038
4319 4321 4330 4416
+hsync -vsync
Type 1 detailed timing: aspect: 16:9,
Detailed mode: Clock 1058.790 MHz, 0 mm x 0 mm
3839 3886 3917 4038
4319 4321 4330 4366
+hsync -vsync
...

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

This is also required for 5K displays:

https://raw.githubusercontent.com/linuxhw/EDID/master/Digital/Samsung/SAM0F9C/511580628E56

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

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: 5120x1440 59.976879 Hz 0:0 88.826 kHz 469.000000 MHz (aspect undefined, no 3D stereo, preferred)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 10 Vback 28 Vpol N
Checksum: 0x95
Checksum: 0x90

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

In the more modern DisplayID standard, there are several types of "detailed timing"

Alx24.

Alx24
New Contributor I
5,931 Views

Alx24.

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