Not Recognizing Interface RTL8125B

eighty9sho

New Member
Oct 16, 2020
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Hello all. I've got a shiny new PC built and while Proxmox recognizes the first interface without issue (RTL811H), the second interface (RTL8125B) is MIA. I found other articles stating I can install Debian which would recognize the interface and then Proxmox on top of that, however I'd like to stay native. It looks like this hardware also comes on ODROID H2+ devices and there are a few solutions however I can't find any luck. Since 1 interface is working I've devised a plan of attack based on procedure found in this post:

1) 1 usb with proxmox, 1 usb with driver package
2) Boot into proxmox installer and Select debug mode installation
3)Press ctrl+d once for it to proceed
4)type in ‘ ip addr show ‘ And note down the working interface, in my case enp40s0
5) type in ‘ ip link set enp40s0 up’ #replace enp0s with your own interface name
6) type in 'dhclient enp40s0' #replace enp0s with your own interface name
7) test connectivity by using ping, ‘ping 1.1.1.1’ (successful)
8) 'apt update'

Output:
Get:1 http://download.proxmox.com/debian/pve buster InRelease [3051 B]
Get:2 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Err:1 http://download.proxmox.com/debian/pve buster InRelease
Couldn't create temporary file /tmp/apt.conf.pol2j8 for passing config to apt-key
Err:2 http://security.debian.org/debian-security buster/updates InRelease
Couldn't create temporary file /tmp/apt.conf.gHvz66 for passing config to apt-key
Get:3 http://ftp.debian.org/debian buster InRelease [121 kB]
Err:3 http://ftp.debian.org/debian buster InRelease
Couldn't create temporary file /tmp/apt.conf.uRv5GZ for passing config to apt-key
Get:4 http://ftp.debian.org/debian buster-updates InRelease [51.9 kB]
Err:4 http://ftp.debian.org/debian buster-updates InRelease
Couldn't create temporary file /tmp/apt.conf.daVtBc for passing config to apt-key
Reading package lists...
W: GPG error: http://download.proxmox.com/debian/pve buster InRelease: Couldn't create temporary file /tmp/apt.conf.pol2j8 for passing config to apt-key
E: The repository 'http://download.proxmox.com/debian/pve buster InRelease' is not signed.
W: GPG error: http://security.debian.org/debian-security buster/updates InRelease: Couldn't create temporary file /tmp/apt.conf.gHvz66 for passing config to apt-key
E: The repository 'http://security.debian.org/debian-security buster/updates InRelease' is not signed.
W: GPG error: http://ftp.debian.org/debian buster InRelease: Couldn't create temporary file /tmp/apt.conf.uRv5GZ for passing config to apt-key
E: The repository 'http://ftp.debian.org/debian buster InRelease' is not signed.
W: GPG error: http://ftp.debian.org/debian buster-updates InRelease: Couldn't create temporary file /tmp/apt.conf.daVtBc for passing config to apt-key
E: The repository 'http://ftp.debian.org/debian buster-updates InRelease' is not signed.

9)install pve-header apt install pve-headers-$(uname -r)
Output:
install: target 'pve-headers-5.4.34-1-pve' is not a directory

Now from other posts it seems I just need to change the /etc/apt/sources.list to the "no subscription" section in the wiki:

deb http://ftp.debian.org/debian buster main contrib
deb http://ftp.debian.org/debian buster-updates main contrib

# PVE pve-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pve buster pve-no-subscription

# security updates
deb http://security.debian.org/debian-security buster/updates main contrib

I run steps 8 and 9 again but hit the same snags. Is it necessary for these steps to be followed pre install? I have already installed Proxmox on ssd and have it up and running using other interface-would be easier to just fix at current working point.

Any help is appreciated.
 
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