[SOLVED] Networking Error with GPU installed

Discussion in 'Proxmox VE: Networking and Firewall' started by hewu, May 12, 2018.

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  1. hewu

    hewu New Member
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    Hello everybody,
    I've got a very odd error with my proxmox setup. Normally my system works fine, but when I install a GPU the network service doesn't start on reboot.
    If I use "ifconfig" to check my IP, the service isn't found.
    I can't figure out why this happens and didn't find a solution on the web till now.
    If you need something to help me, just ask ;)
    Thanks in advance
     
  2. wolfgang

    wolfgang Proxmox Staff Member
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    Hi,

    You mean plug in a GPU card?

    What is the exact error output?

    Maybe it has something to do with the PCI allocation.
    What you get as output if you run

    lspci -vv
     
  3. hewu

    hewu New Member
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    Thank you for answering me.

    1. Yes, I mean plug in the Card.
    2. I entered "lspci -vv" with and without the Card. I've attached the Output files.

    I hope you can help me with my Problem.
     

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  4. wolfgang

    wolfgang Proxmox Staff Member
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    You have no IRQ conflicts.

    You can try to plug the GPU to another PCIe port.
    May there is a bios upgrade what fix this behavior.
     
  5. hewu

    hewu New Member
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    I plugged the GPU in PCIe Port 4, but nothing changes. Still the Network wont work.
    And my BIOS is rev. 3404, the latest ASUS provides for my MB.

    I have no ideas what might be the error.
     

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  6. wolfgang

    wolfgang Proxmox Staff Member
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    Can you send the output of this command, when the GPU is pluged.

    Code:
    ip link show
    
    ip a
    
     
  7. hewu

    hewu New Member
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    Here they are:
     

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  8. wolfgang

    wolfgang Proxmox Staff Member
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    Can you send the network config.

    /etc/network/interfaces
     
  9. hewu

    hewu New Member
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    no problem
     

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  10. wolfgang

    wolfgang Proxmox Staff Member
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    Your network cards will change the name after plugging in the GPU, so this is why your losing connectivity.
    The PCIe path where the predictable network name made of is done by the bios not by the OS.
    One Network port is missing.
     
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  11. hewu

    hewu New Member
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    It works !!!
    I adjusted my interface and rebooted the system with the GPU.
    In /etc/network/interfaces
    auto lo
    iface lo inet loopback

    iface enp5s0 inet manual

    iface enp6s0 inet manual

    iface enp4s0 inet manual

    auto vmbr0
    iface vmbr0 inet static
    address 192.168.0.6
    netmask 255.255.255.0
    gateway 192.168.0.1
    bridge_ports enp5s0
    bridge_stp off
    bridge_fd 0​

    I changed "bridge_ports enp5s0" to "bridge_ports enp7s0".

    Thank you very much for your effort and help!
     
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