[SOLVED] No network connection after adding pcie tuner card

[CheesyPete]

Hello,

I have just received a Hauppage WinTV quad tuner to use with plex and when I try to connect it to my server, physically, I lose networking.
I cannot even ping my router, it just returns destination host unreachable.

Motherboard: ASUS H110M-R

I guess that it is somehow recognising the card as a network card maybe?
I don't know how to troubleshoot this so any help will be greatly appreciated.

Thanks

 

[Stoiko Ivanov]

Check the output of:

ip link
ip addr

with and without the tuner card installed - my guess is that the network interface gets renamed, due to the new pci-device being present - see https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

- you'd need to adapt the interface name to the one when the card is present

I hope this helps!

 

[CheesyPete]

Hi, thanks for your reply, I think I may not know what I should be looking for, but what I thought were the names of the network interfaces seem to stay the same.

Both times I have 3 results from the two commands:

1: lo
2: enp7s0
3: vmbr0

As I understand it vmbr0 is the one that matters, it returns a localhost ip with ip a

Weirdly the difference is something I do not understand, below the vmbr0 entry there are sub categories.
With the card attached:

inet 192.168.0.58/24 brd 192.168.0.255 scope global vmbr0
    valid_lft forever preferred_lft forever
inet6 fe80::14e4:a1ff:feca:f010/64 scope link
    valid_lft forever preferred_lft forever

Then when I remove it, there appears to be more?

inet 192.168.0.58/24 brd 192.168.0.255 scope global vmbr0
    valid_lft forever preferred_lft forever
inet6 2a02:c7f:1692:ac00:b26e:bfff:fecf:f674/64 scope global dynamic mngtmpaddr
    valid_lft 3441sec preferred_lft 3441sec
inet6 fd62:b682:ce83:0:b26e:bfff:fecf:f674/64 scope global dynamic mngtmpaddr
    valid_lft forever preferred_lft forever
inet6 fe80::b26e:bfff:fecf:f674/64 scope link
    valid_lft forever preferred_lft forever

Also, this may be the crux of the issue or may be irrelevant, the state of enp7s0, from the commandip link
changes from UP without the card, to DOWN with the card, could that be the issue?

Thanks again for your help

 

[CheesyPete]

I have tried to up the enp7s0 with the command ip link set enp7s0 up however I still cannot connect to the network

 

[Stoiko Ivanov]

please post the complete output of the commands (in code tags) - you write they output the same but speak of 'enp7s0' and 'enp3s0' ....

the relevant interface is the bridge-port attached to vmbr0

also post '/etc/network/interfaces'

my quick guess based on the provided information:
you have enp7s0 with the card - but have configured 'enp3s0' (the interface-name without the tuner-card) as bridgeport

 

[CheesyPete]

OK yes, that was it thank you, I did not notice that the numbers were different, cant believe I cant read.
But for anyone else with this issue I modified /etc/network/interfaces

Then where I put INTERFACE_HERE I replaced the old interface name (enp3s0) with the new one (enp7s0)

auto vmbr0
iface vmbr0 inet static
        address 192.168.0.58
        netmask 255.255.255.0
        gateway 192.168.0.1
        bridge_ports INTERFACE_HERE
        bridge_stp off
        bridge_fd 0

Although this may just be a bodge, if it is, please tell me

Thanks for your help

 

[Stoiko Ivanov]

Glad you found and solved the issue!