network-manager fails to detect usb internet adapter

Bug #1986444 reported by sally
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
network-manager (Ubuntu)
New
Undecided
Unassigned

Bug Description

Since I upgraded to Ubuntu 22.04 from 20.04 several days ago, my ugreen network adapter is not detected even though the lights between the ethernet cable and the adapter are on. I am using a
Dell G3 3500 that came with windows 10. The adapter works ok on my Dell XPS and worked fine
with Ubuntu 20.04 on the Dell G3. Other devices are detected when plugged into the usb.
The wifi is working. Any help with this would be appreciated.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: network-manager 1.36.6-0ubuntu2
ProcVersionSignature: Ubuntu 5.15.0-46.49-generic 5.15.39
Uname: Linux 5.15.0-46-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Aug 13 19:16:38 2022
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 # Include files from /etc/network/interfaces.d:
 source-directory /etc/network/interfaces.d
InstallationDate: Installed on 2020-12-04 (617 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
IpRoute:
 default via 192.168.0.1 dev wlp0s20f3 proto dhcp metric 600
 169.254.0.0/16 dev wlp0s20f3 scope link metric 1000
 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
 192.168.0.0/24 dev wlp0s20f3 proto kernel scope link src 192.168.0.4 metric 600
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.36.6 connected started full enabled enabled enabled enabled enabled

Revision history for this message
sally (julesflwr) wrote :
Revision history for this message
sally (julesflwr) wrote :

I followed some suggestions: https://askubuntu.com/questions/906636/ethernet-adapter-was-disable-on-ubuntu-17-04/909185#909185 to fix the problem. Specifically, I edited the file:
/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf
and changed the line unmanaged-devices=*,except:type:wifi,except:type:gsm,except:type:cdma
to unmanaged-devices=*,except:type:ethernet,except:type:wifi,except:type:gsm,except:type:cdma

I also followed the suggestion: https://askubuntu.com/questions/1039233/no-wired-connection-wired-unmanaged-ubuntu-18-04/1043244#1043244
and edited the file: /etc/NetworkManager/NetworkManager.conf and changed the line
managed=false to managed=true

After sudo systemctl restart NetworkManager and a reboot the problem seems to be fixed.
Incidentally, there were quite a few problems with the upgrade, and I had to reinstall the
Ubuntu Desktop to fix some of these. I do not know if the NetworkManager files were changed or deleted when I did this.

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