network-manager fails to detect usb internet adapter

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

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
 # 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)
 default via dev wlp0s20f3 proto dhcp metric 600 dev wlp0s20f3 scope link metric 1000 dev docker0 proto kernel scope link src linkdown dev wlp0s20f3 proto kernel scope link src metric 600
 PATH=(custom, no user)
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
 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: to fix the problem. Specifically, I edited the file:
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:
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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