Arc B580 not scaling correctly to 1440p

[Rumzeiss]

I have the problem from the subject with Intel Arc B580 connected to 4K UHD TV. When I play PC games and want to lower the resolution to 1440p from native, I receive a windowed instead of full screen. The same happens and when just changing the desktop resolution of  Win11. There is no problem with 1080p or 2160p (native). Doesn't matter if scaling mode is changed in Intel graphics software from Display to GPU. 

[MUC]

Please create a Report for Intel Graphics Drivers and attach the output file here.

[Rumzeiss]

None of the both programs from the link that you need report from, are to be found on my computer. They were not part of the driver package, only Intel graphics software.

[MUC]

How to Install the Intel Graphics Command Center From the Microsoft Store

[Rumzeiss]

Required report file is attached.

[RandyT_Intel]

Hi @Rumzeiss,

Thank you for posting here in our community. To effectively diagnose and address the issue you're experiencing, I kindly ask you to provide detailed responses to the following questions. This information will help us isolate the problem and determine the most appropriate course of action.  

• Please provide the SSU log report and share it here so I can review your system's configuration. 
• Are you using HDMI or DisplayPort?
• What specific 4K TV model are you using?
• What happens if you manually set 1440p at different refresh rates (60Hz, 120Hz)?
• When did the issue first start occurring? Was everything working fine before that?
• Have you made any software or hardware changes to the system recently? 
• Have you tried updating your graphics driver to the latest version, 32.0.101.8136?

I look forward to your response and am committed to resolving your issue promptly. 

Best regards,  

Randy T.  

Intel Customer Support Technician  

[Rumzeiss]

Hello, and thanks for the reply. Here is the required info :

• Please provide the SSU log report and share it here so I can review your system's configuration. - Provided
• Are you using HDMI or DisplayPort? - HDMI 2.1 144 Hz
• What specific 4K TV model are you using? - TCL 55C735
• What happens if you manually set 1440p at different refresh rates (60Hz, 120Hz)? - Here is the key part. When I use IGCC beta to change resolutions, i get  fullscreen at 1440p, but only on 120 Hz ! When I change to 60 Hz, again I get centered window instead fullscreen. If I change resolution from Windows display settings, there is no difference between 60 and 120 Hz, always window at 1440p.
• When did the issue first start occurring? Was everything working fine before that? - It started from day one when I mounted the B580 at the end of August 2025, with the first game installed. It was fine before that with an old AMD Radeon 6000 series. Although some games like Hellblade 2 and Kona 2 were fine at 1440p fullscreen 120 Hz. Refresh rate is set in Windows to be always @120Hz.
• Have you made any software or hardware changes to the system recently? - No. Just updated intel graphics driver when new one is available ( 5 times from 08.2025 until today).
• Have you tried updating your graphics driver to the latest version, 32.0.101.8136? - Yes, I am using the latest.

[MUC]

This appears to be a 55" TCL Google TV with HDMI 2.1 FRL6 from 2020 (probably Realtek RTD2851M).

The first EDID block advertises:

This is a standard PC signal. If "Display Scaling" is selected in the Intel graphics software, that should theoretically be sufficient.

But simulating the TV to my Iris Xe (32.0.101.7076), I can confirm the behavior (see Start > Settings > System > Display > Advanced Display on your PC):

What happens when you press "ZOOM" on the remote control?

[Rumzeiss]

When pressing ZOOM on remote control comes the menu with options from the enclosed picture.

[MUC]

Apparently, Active Signal Mode can only be matched with Desktop Mode if the display device explicitly advertises all refresh rates at PC resolutions as supported. By default, this is only the case for 1440p @ 120 Hz. I added 60 Hz for testing purposes, and now it works there as well.

If you'd like to try it out, please do the following:

• Download Custom Resolution Utility (CRU)
• Run CRU.exe
• Make sure the active EDID is XXX9615 - Beyond TV connected to your PC (1)
• Proceed as shown:
  
  
  
• Close all CRU windows with OK (6) and restart the computer.

• Select 2560 x 1440 @ 60 Hz in the Windows display settings.

• Open Intel Graphics Software and switch to Display.
  
  

  

  Whatever is displayed there: Change the setting to something else, then back to "Display Scaling" and "Maintain Display Scaling".

Now, even at 60 Hz, the TV should display a full screen.

Note:
All changes made with CRU can be undone if necessary by running "reset-all.exe" from the CRU download package and restarting the system. You can find more information about this tool on the linked page.

[Rumzeiss]

I would like to remind you following information my from previous messages : Only in IGCC beta it is possible to change resolution to 1440p 120Hz. and get fullscreen (which you succeeded in the simulation). In my Windows display settings this change is not possible neither with 120 Hz nor 60 Hz and results only in centered window. The same happens when the resoluton is changed from in-game settings, which is the main reason for this topic. If you still think your advice with adding 1440p 60Hz resolution to CRU could help in this case, I will try it later this evening. Thank you for the support!

[MUC]

No, if you don't absolutely need 1440p @ 60 Hz, you can save yourself the trouble. In my simulation, changing the resolution in the Windows display settings to 1440p @ 120 Hz works perfectly. I haven't used IGCC to change the resolution in a long time. Unfortunately, I'm not familiar with PC game settings and can't comment on that. Apparently, our two systems are too different.

We need advice from the Intel Graphics Team here.

[Rumzeiss]

Ok, awaiting their opinion with great interest!

[RandyT_Intel]

Hi @Rumzeiss,

After reviewing all the technical information you provided and the excellent analysis from our community expert, I've identified the the driver gets confused and sends a 4K signal instead, which makes your content appear in a small window in the center of the screen.

I recommend trying this CRU solution first, as the technical analysis is very thorough and credible. After implementing it, please test your games and Windows display settings to see if 1440p now works properly in fullscreen. If you're still experiencing issues after correctly applying this fix, then we'll need to coordinate this internally for deeper investigation, as it would indicate a more complex driver compatibility problem.

Please let me know how the CRU solution works for you.

Best regards,  

Randy T.  

Intel Customer Support Technician  

[Rumzeiss]

Hello, check the enclosed pictures, after following the steps from CRU solution, unfortunately without positive result..

[RandyT_Intel]

Hi @Rumzeiss,

Thank you for your updates. I will further investigate the issue and attempt to replicate it on our end. I'll post an update here or notify you directly once there are any developments. If I need further details, I'll reach out to you here. I appreciate your patience as I work on this matter. 

Best regards,  

Randy T.  

Intel Customer Support Technician