steam deck with dock on windows 11 : bug with PC Monitor

[Segagadreamin]

Hi everyone,

Excuse my english, i try to do my best.

I have a Steam Deck LCD + Officiel Dock from Valve

I have a problem with Windows 11 on the Deck with Second Screen (PC monitor).

The PC Monitor won't show anything. It's still black and show me the message :
" Current Input timing is not supported by the monitor display. please change to 3840x2160, 60hz".

but on windows 11 : the resolution is already on 3840 x 2160 et the refresh is already on 60hz...
even if I try a smaller resolution or refresh, it doesn't work.

On Batocera, Bios boot menu or Steam OS : I don't have this problem. I think it's a problem from windows 11.

If I uninstall and reinstall the Officiel Graphic Driver on windows 11 (from the website of steam deck) : the problem is solve.
But as soon as power off Windows 11; the same probem again...
I can't reinstall the Driver everytume, it's boring...

Can you help me please ?

Nice sunday to all
Thnaks

[Segagadreamin]

PS : i use a hdmi cable ( I try 2 different cable but same probleme)
And when I say « second screen on pc monitor » I would say first screen is the steam deck .
Thanks

[Segagadreamin]

Ps ps : i made few tests
- steam os works on my monitor pc
- batocera and windows 11 don’t work on my monitor pc

On my tv, steam os , batocera and windows 11 works.

So the problem is my pc monitor ? Weird…

[Backslash]

I know this is an old thread, but have you ever found a solution for this issue?