hp proliant dl380 g6

Hello everyone, im trying to install Proxmox 7.2 VE on my HP ProLiant DL380 G6. I get into the Bootloader and after booting the Kernel i see the initsystem Output. But at the Point where Xorg with the Installation starts, my Monitor (FullHD 60Hz) goes blank and shows an "Signal out of range...

Hi all, Actual question: I am running proxmox VE 4.4 on an HP Proliant DL380g6. "HP ProLiant Support Pack CD for dpkg-based distributions" for this machine seems to only exists for a limited set of older hypervisors (up to xen 6.x, up to debian 6.0, ...). Because I am running proxmox 4.4 (based...