Ethernet connection via USB-C not detected

[masquerad3r]

Hello folks, I have a simple dual monitor setup, where I connect my laptop via USB-c (Display port) to my monitor. It solves 3 purposes, extending my screen, charging my laptop and providing ethernet connection (at least it did in windows).

In tumbleweed, I am able to share my screen and my laptop is charging, but its not detecting ethernet connection. How do I troubleshoot/enable this, do I need some packages installed for this?

[mdkouhbanani]

I had same issue.
You can simply fix it by loading rndis_host ( or rndis-host )module .

,
sudo modprobe rndis-host
,

[masquerad3r]

Thanks, it did add a new interface and seems to recognize ethernet connection, but still does not connect to the internet. Is it being blocked by some firewall rule?

[hui]

rndis_host is blacklisted as it is considered insecure. The solution is in several threads…

Help Needed: USB Tethering Recognized but No Internet on openSUSE

"Hi everyone, I connected my phone to my computer running openSUSE via USB and enabled USB Tethering on the phone. The system recognizes the phone, and in the output of the nmcli device status command, it shows a device named enp3s0 as ethernet. However, its status is NO-CARRIER, which means it’s not receiving any network signal. NetworkManager is not installed on my system, and since I don’t have internet access, I can’t install it using Zypper. Simply put, the phone is detected, but the…

How to solve usb tethering not working in opensuse tumbleweed?

I try to install tumbleweed kde plasma on my hp victus laptop with amd ryzen cpu. tumbleweed not loading the usb tethering by default (i tried nobara,fedora,kde neon ,debian,cachy, kubuntu ,garuda etc) all works perfectly for usb tethering . but not on tumbleweed it seems like i installed the lan driver but usb tethering (using mobile data) still not working wireless connectivity is good , no problem at all i do not have any wired network to test whether wired driver works or not. shal…

Usb tethering Android -> Tumbleweed

Does it work for anybody with recent a recent TW version? It used to work on my machine some time ago, now it doesn’t anymore. Same phone, same laptop. I can see the phone with lsusb (samsung … tethering mode), but in networkmanager nothing shows up. ‘ip a’ doesn’t show an interaface, nothing in syslog that would point towards networking. It sees the phone being there as an usb device and runs ‘mtp-probe’. That’s all. I tried a different linux distro and that kinda-sorta works…

How to load rndis_host module on usb plug-in

My cable internet access is unreliable and often down for days so I must sometimes use an Android phone with USB tethering to make a connection. Since RNDIS is blacklisted I do “sudo modprobe rndis_host” to load the module when needed but I would prefer to allow rndis_host to be loaded automatically when I plug in the phone and enable USB tethering. This issue is discussed in a previous post here but I don’t know how to suspend blacklisting. Is this the correct approach, and if so is the…

Load rndis_host module on usb plug?

Hi I have an old Android phone that I use for USB tethering. I would like to modprobe rndis_host when I plug the phone in. Do I need to create a udev rule? Or a modprobe.d rule? running openSUSE Tumbleweed

Tethering via USB doesn't works

Just installed and updated Tumbleweed. Connected my mobile, enabled tethering in phone but network icon doesn’t change and internet isn’t available. With same hardware (phone and pc) using hotspot (wifi) all works fine.

[masquerad3r]

Thank you for linking the resources, I tried both temporary (sudo modprobe rndis_host) and permanent methods (updating the blacklist) and again the result is same. It detects the existence of ethernet cable but does not connect to the internet.

[hcvv]

@masquerad3r

It detects the existence of ethernet cable but does not connect to the internet.

There is a huge difference between detecting the ethernet cable and going to the Internet. There is e.g. a router in between, etc.

There is a standard way to walk when you think your system has no Internet connection.
You check from bottom to top (all done as root):

1. Is the NIC up with an IP address? ip addr
2. Can you connect to another system on your LAN? ping -c1 <IP-address of your router> (I hope you know that address)
3. Do you have a default route to the Internet? ip route and/or ip -6 route
4. Can you connect to a system on the internet? ping -c1 195.135.223.50 and/or ping -c1 2a07:de40:b27e:1204::10
5. Can you resolve host/domain names? ping -c1 forums.opensuse.org

Take care. As soon a one step fails, that must be resolved first. It is useless to go to the next step before it is resolved.

So start with 1. and do not hesitate to post the output here to get help on the interpretation.

[masquerad3r]

Apologies for the late reply, I think I forgot to mention before, this setup is in my office and I came today to try it out again. Trying the suggested methods do not work for me. Even connecting to the cable and enabling rndis_host module, just shows an extra ethernet interface without an IP.

ip a

# Output
...
4: enp4s0f4u1u1u2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether ca:fe:de:ad:be:ef brd ff:ff:ff:ff:ff:ff

Also, I confirmed by booting into windows, there is no problem with the ethernet cable/connection.