No network after reboot - dependency issue

[liaobamboo]

Hello all. I needed to reboot my Proxmox server to get into BIOS and change fan speed settings. After boot I could no longer reach it on static IP. There were no vmbr0 interface available. Network port on my router was also not up. Tried to solve it by restarting networking.service, with no luck. showed dependency failed for Network.....

I can search the internet using the "USB Trying Ubuntu". so my HW is ok.
I reinstalled the PVE, no luck. same error.

After restart:

 

[Moayad]

Hi,

May you post the network configuration (cat /etc/network/interfaces) and the output of ip a?

 

[liaobamboo]

Hi,

May you post the network configuration (cat /etc/network/interfaces) and the output of ip a?

Thank you very much.
Finally, a "nomodeset" does the thick.
The reason may be the conflict between the two VGA cards. the dedicate card and the iGPU.
If I unable the iGPU in BIOS, everything works.
If I enable both GPUs in BIOS, I have to add the "nomodeset".
otherwise, the **udev** thing and networking have problems.