A310 Not Properly Recognizing 4K TCL TV

[TVCCS]

I recently installed a Sparkle A310 in a Dell Precision 3420 i7-7700 as part of a media center PC build.  It's connected to a TCL 75R655 4K TV.  All software, drivers and BIOS have been updated to their latest versions including the Intel Graphics software.  The software sees the monitor as HDR capable and displays it as such, but refuses to recognize it as a 4K monitor, instead defaulting to 1920x1080.  The Dell also has a UHD630 onboard graphics chip which also only displays 2K.  I have done a clean install of the latest Intel graphics drivers to no effect.  

The system has an 8K HDMI cable which has worked without issue with other PC's and GPU's from NVidia and Radeon, including a Dell Optiplex 960 with a Radeon R7 240 for many years which the new system is replacing.  

SSU file attached

[MUC]

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

If you do not have the Intel Graphics Command Center on your computer, you can read here how to install it.

[TVCCS]

Report Date: Wednesday, 03 December 2025
Report Time [hh:mm:ss]: 05:45:45 PM
Operating System: Microsoft Windows 11 Pro 10.0.26200
IGCC Version: 1.100.5688.0
Language: en-US
Physical Memory: 31.89 GB
Current Resolution: 3840x2160

Processor: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
Processor Speed: 3600 MHz
GFX Driver Name: Intel® HD Graphics 630
Shader Version: 6.5
OpenCL* Version: 3.0
* Microsoft DirectX* *
Runtime Version: 12
Hardware-Supported Version: 12
Vendor ID: 8086
Device ID: 5912
Device Revision: 04
GFX Driver Version: 31.0.101.2130
Dedicated RAM: 128 MB
Shared RAM: 16 GB
Max Supported Displays: 3
GFX Vulcan: 1.4.328
GFX GOP: 20.1.1073

GFX Driver Name: Intel® Arc(TM) A310 LP Graphics
Shader Version: 6.7
OpenCL* Version: 3.0
* Microsoft DirectX* *
Runtime Version: 12
Hardware-Supported Version: 12
Vendor ID: 8086
Device ID: 56A6
Device Revision: 05
GFX Driver Version: 32.0.101.8331
Dedicated RAM: 4 GB
Shared RAM: 16 GB
Max Supported Displays: 4
GFX Vulcan: 1.4.328
Option ROM (OpROM) Version: 20.0.1073.1

* Devices connected to the Graphics Accelerator *

Active Displays: 1

* Digital Display 1 *

Display Name: 75R655
Display Type: Digital
Serial Number: -
DDC2 Protocol: Supported
Gamma: 2.2
Connector Type: HDMI

Maximum Image Size
Horizontal - 65.35 inches
Vertical - 36.61 inches

Supported Modes
640 x 480 (60p Hz)
640 x 480 (72p Hz)
640 x 480 (75p Hz)
720 x 400 (70p Hz)
720 x 480 (60p Hz)
800 x 600 (60p Hz)
800 x 600 (72p Hz)
800 x 600 (75p Hz)
1024 x 768 (60p Hz)
1024 x 768 (70p Hz)
1024 x 768 (75p Hz)
1152 x 864 (75p Hz)
1280 x 720 (60p Hz)
1280 x 800 (60p Hz)
1280 x 960 (60p Hz)
1280 x 1024 (60p Hz)
1280 x 1024 (75p Hz)
1440 x 900 (60p Hz)
1680 x 1050 (60p Hz)
1920 x 1080 (30p Hz)
1920 x 1080 (60p Hz)
1920 x 1080 (60i Hz)
1920 x 1080 (120p Hz)
1920 x 1080 (144p Hz)
2560 x 1080 (100p Hz)
2560 x 1440 (120p Hz)
3840 x 2160 (24p Hz, 4K)
3840 x 2160 (30p Hz, 4K)
3840 x 2160 (60p Hz, 4K)
4096 x 2160 (24p Hz, 4K)
4096 x 2160 (30p Hz, 4K)
4096 x 2160 (60p Hz, 4K)

Power Management Support
-

Raw EDID:
00 FF FF FF FF FF FF 00 50 6C 36 52 83 0D F2 08
23 20 01 03 80 A6 5D 78 0A 47 15 AD 4F 3C B2 28
0E 50 54 AD CF 00 71 4F 81 40 81 80 81 00 95 00
B3 00 D1 C0 81 C0 5E 87 80 A0 70 38 4D 40 30 20
35 00 56 50 21 00 00 1E 6F C2 00 A0 A0 A0 55 50
30 20 35 00 94 23 53 00 00 1E 00 00 00 FC 00 37
35 52 36 35 35 0A 20 20 20 20 20 20 00 00 00 FD
00 30 90 1E FF 8A 00 0A 20 20 20 20 20 20 01 D9

02 03 71 71 4B 76 DB 61 02 66 64 3F 10 22 05 04
2F 0D 7F 07 15 07 50 57 17 03 67 04 03 3D 06 C0
83 01 00 00 E2 00 CF E3 05 C0 00 6D 03 0C 00 24
40 B8 3C 20 10 60 01 03 04 68 D8 5D C4 01 78 80
6B 02 E6 06 0F 01 76 00 1A EB 01 46 D0 00 4D 4A
82 78 64 8F 86 E6 11 46 D0 00 70 00 E9 2A 10 93
FF 0E 6F 08 8F 10 E5 01 8B 84 90 01 E4 20 00 00
03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B

* Other names and brands are the property of their respective owners.

[JedG_Intel]

Hello TVCCS,

Thank you for posting on Intel Community Forum.

To properly address the issue, kindly share the information below.

1. Are you using a direct connection (HDMI to HDMI)?

2. When you connect the UHD630 directly (A310 disabled), does it also max out at 1080p?

3. Have you tested the A310 with a different 4K display or monitor?

4. What refresh rate is currently being used?

5. Does reducing refresh rate to 30Hz allow 4K resolution selection?

I look forward to your response.

Best regards

Jed G.

Intel Customer Support Technician