Notebook Video, Display and Touch

Hello Community,

I am unable to achieve Dual 4K Resolution on two external HP V28 4K Monitors connected to a HP Thunderbolt Dock 120w G2 w/Audio via DisplayPort cables, with the Dock connected to a HP Spectre x360 via thunderbolt cable.

I was able to achieve 4K, 3840x2160, resolution on the internal display and one external monitor, but the second monitor had a lesser resolution.

Presently, the installed Intel UHD Graphics device driver is version 26.20.100.7927 dated 25-Feb-20.

The Intel Driver Support Assistant offered Intel UHD Graphics device driver version 30.0.100.9955 dated 13-Oct-21. I installed it from the Intel website, but was only able to achieve 4K resolution on the internal display and much lesser resolutions on the external displays. Apparently, HP Support has customized their Intel UHD Graphics device driver, and in such cases, Intel recommends staying with the older HP Support customized device driver. Windows Update rolled back the installation.

However, I can achieve 4K, 3840x2160, resolution on the laptop and external monitor with only one external monitor connected.

https://www.hp.com/us-en/shop/pdp/hp-thunderbolt-dock-120w-g2?pStoreID=epp

The link above advertises "See every color and detail of your projects with a superfast connection to dual external 4K displays as soon as you plug your notebook into the dock."

The images below indicate the HP Thunderbolt Dock is a recommended accessory for the HP Spectre x360 15-df1033dx.

Has anyone been successful achieving dual 4K resolution with a HP Spectre laptop, and the HP Thunderbolt Dock?

I'm not sure if this is a hardware problem, software configuration problem, or a need for HP Support to update device drivers and software. It's not unusual for HP Support to be delinquent with device driver updates.

HP Support hasn't been very helpful resolving this issue. The Dock is a recommended accessory for the HP laptop.

I'm looking for a fix. Regards