Issue with docking (HP 850 G7 + Lenovo Thunderbolt 3 Gen 2)

[cablemess]

Hi all,

I have an issue with a triple FHD (1920x1080@60p) setup.
As stated in the title, I have the following setup:

1 HP 850 G7 notebook with an i7-10510U with Intel UHD Graphics running Win10 21H2,
1 Lenovo Thunderbolt 3 Gen 2 docking, and
3 FHD screens (Iiyama G-Master G2770HSU-B1)

I have checked the forum before posting, and I have done the following troubleshooting steps;
Updating BIOS to latest version, enabling High Performance mode for DP Alt mode in the BIOS, update Intel Chipset drivers, update Intel Graphics drivers, update docking firmware to latest version & latest Windows updates applied.

I have tested this setup with a different notebook, an MSI GS76 with dedicated graphics card (RTX 3080) and the setup works fine at triple 1920x1080@165p.

However, I cannot select the three screens in this resolution and refresh rate. I can do interlaced refresh rate or lower resolutions for this setup but this is what is causing my nausea...
In the Intel Graphics Center I do get the following message but according to HP's and Lenovo's documentation this setup should work as the docking is supporting DP 1.4. This message is popping up regardless of the mirroring/duplication or expanding setup.



I hope any one of you can be of help!

PS: Would be nice if the screens would be able to run at 165Hz if the graphics card would be able to...

[banhien]

@cablemess 

They are NOT compatible, You can have 3 FHD monitors when using your machine with HP USB-C Gen 5 dock

Regards.

[cablemess]

Thanks for your response.

Small question; would the model of the HP Dock G5 then matter? For example, would there be any compatibility issues with either the 5TW10AA or 26D32AA model?

I could purchase a different dock but why would the notebook and existing Lenovo dock NOT be compatible as I don't see any reason other than the typical 'vendor suits vendor' regardless of standards such as DP 1.4