Screen Resolution incorrect (and unchangeable) after driver updates

[Murrian]

I have a Sparkle Intel Arc A770 Luna OC 16GB and any time I upgrade to a 32.x driver I lose my third screen.

Have two 4k Dell 27" screens (S2721QS) and a small 7.9" panel I use for system information, it's connected over HDMI (other two screens are Display Port).

AIDA64 properties of the screen:

Monitor Name Generic Monitor (LC0784-01) [NoDB]

Monitor ID YXS6666

Model LC0784-01

Manufacture Date Week 30 / 2022

Serial Number None

Max. Visible Display Size 10 mm x 192 mm (7.6")

Picture Aspect Ratio 5:4

Gamma 2.20

DPMS Mode Support Standby, Suspend, Active-Off

Supported Video Modes

400 x 1280 Pixel Clock: 43.24 MHz

Given the screens small size, it's 1280x400 and works perfectly fine under the 31.x drivers (currently on the last WHQL version 31.0.101.5592) however whenever I try and upgrade to a 32.x driver the resolution is set to 1920x1080 and is greyed out under windows display manager, unable to change.

Going in to advanced adapter properties and "list all modes" lists just 1920x1080 so unable to override and reset to the right resolution and obviously forcing this massively wrong resolution to the screen causes it to show just a glitchy mess.

System specs:

OS Name Microsoft Windows 11 Pro

OS Version 10.0.22631.4169 (Win11 23H2 2023 Update)

Graphics Processor Properties

Video Adapter Intel Arc A770 (DG2)

GPU Code Name DG2-512 (ACM-G10)

PCI Device 8086-56A0 / 172F-4134  (Rev 08)

Transistors 21700 million

Process Technology 6 nm

Die Size 406 mm2

Bus Type PCI Express 4.0 x16 @ 3.0 x8

GPU Clock 600 MHz  (original: 2100 MHz)

GPU Clock (Turbo) 300 - 2400 MHz

RAMDAC Clock 350 MHz

Pixel Pipelines 128

Texture Mapping Units 256

Unified Shaders 4096  (v6.6)

DirectX Hardware Support DirectX v12

Ray-Tracing Cores 32

WDDM Version WDDM 3.1

https://au.pcpartpicker.com/list/d24B89

(note it's an i5-12500H, integrated to the Erying motherboard)

[RobbieR_Intel]

Hello Murrian,

Thank you for sharing the details of your setup and the issue you're encountering with your third screen after upgrading to the 32.x driver for your Sparkle Intel Arc A770 Luna OC 16 GB.

To assist you more effectively, I have a few follow-up questions and suggestions:

• When upgrading to the 32.x drivers, are you performing a clean installation or installing the new driver over the old one? Please see Clean Installation of Intel® Graphics Drivers in Windows* for more information.
• Have you tried adjusting the resolution settings for the third screen directly within the Intel Arc Control or Intel Graphics Command Center?

Please generate an SSU report to help me further analyze important details on your system. To generate the SSU report, please refer to the article: How to get the Intel® System Support Utility Logs on Windows*. Please send us the generated SSU.txt file.

We look forward to your response!

Best Regards,

Robbie R.

Intel Customer Support Technician