Public bug reported:
I notice that the network manager in Cinnamon for the testing version of
Ubuntu does not show activity for an LTE USB modem (model MF831) even
when it is in use. If I install the system with it as the default then
I can plug it and unplug it and the network functions as expected, just
not visibly from the NetworkManager. If I install the system from
another interface first, then I can only use the modem if I run dhclient
manually. I would expect the NetworkManager to find, use, and display
the modem regardless of when it is added to the system.
$ apt-cache policy network-manager
network-manager:
Installed: 1.22.4-1ubuntu2
Candidate: 1.22.4-1ubuntu2
Version table:
*** 1.22.4-1ubuntu2 500
500 http://fi.archive.ubuntu.com/ubuntu focal/main amd64 Packages
100 /var/lib/dpkg/status
$ grep -i pretty /etc/os-release
PRETTY_NAME="Ubuntu Focal Fossa (development branch)"
$ dmesg | grep 'usb 1-4' | tail -n 6
[ 1069.293817] usb 1-4: new high-speed USB device number 6 using xhci_hcd
[ 1069.480640] usb 1-4: New USB device found, idVendor=19d2, idProduct=1408,
bcdDevice=50.01
[ 1069.480646] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1069.480651] usb 1-4: Product: ZTE Wireless Ethernet Adapter
[ 1069.480654] usb 1-4: Manufacturer: ZTE,Incorporated
[ 1069.480657] usb 1-4: SerialNumber:
................................................................
** Affects: cinnamon-desktop (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1862768
Title:
Network manager ignores LTE USB Modem
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