linux-image-6.11.2-amd64 - external display does not work with this kernel

[norbert breun]

Hallo Kernel-Team,

linux-image-6.11.2-amd64 - external display does not work with this kernel.
5120x1440 does not work at all.

However linux-image-6.10.12-amd64 and all before work fine.

I use a Dell laptop + large Dell Display successfully since years.

Cheers