Debian 12 - Intel Iris -- Monitor stopped working

--------------- Linux system info ----------------

Distro: Debian
Release: bookworm
Kernel: 6.1.0-25-amd64

---------------- DisplayLink info ----------------

Driver version: 1.14.4
DisplayLink service status: up and running
EVDI service version: 1.14.4

------------------ Graphics card -----------------

Vendor: i915
Subsystem: [Iris
VGA: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] (rev 01)
VGA (3D):
X11 version: 21.1.7-3+deb12u7

-------------- DisplayLink xorg.conf -------------

File: /etc/X11/xorg.conf.d/20-displaylink.conf
cat: /etc/X11/xorg.conf.d/20-displaylink.conf: Datei oder Verzeichnis nicht gefunden
Contents:

-------------------- Monitors --------------------

Providers: number : 5
Provider 0: id: 0x48 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 4 outputs: 6 associated providers: 4 name:modesetting
Provider 1: id: 0x125 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting
Provider 2: id: 0x104 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting
Provider 3: id: 0xe3 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting
Provider 4: id: 0xc2 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting

Hi,
today I suddently had the problem, that my monitor stopped working as expected when I returned to my computer. I used the driver and the monitor for a while without any problems but today it suddently stopped working. I tried to reboot several times and even uninsalled / installed the displayport-debian driver again. I followed the post-install guide and deleted the file /etc/X11/xorg.conf.d/20-displaylink.conf as stated for Intel graphics card. I also tried the two other versions of the settings in the /etc/X11/xorg.conf.d/20-displaylink.conf file without success.

The Debug Information above tells me that the DisplayLink Service is running and the Monitor is detected by xrandr. What is the problem that the monitor still doesn't work?

Any help is appreciated.