Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: network-manager (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1806407
Title:
Mobile broadband SIM doesn't work but does on same machine booted into
Windows
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
I am trying to use a mobile broadband sim with my TabletPC running
Ubuntu 18.04, but it doesn't work, I get: "Connection Failed:
Activation of network connection failed" when trying to connect with
it. HOWEVER, if I boot this same TabletPC into Windows 10, the sim
works fine. So it is not a problem with the SIM nor a problem the
TabletPC hardware. It is a problem with Ubuntu.
Can I ask what testing/Quality Assurance (QA) you did on Ubuntu for
mobile broadband and where your testing records are kept?
Further details here:
https://askubuntu.com/questions/1079689/mobile-broadband-sim-doesnt-work-with-ubuntu-18-04-but-does-work-in-same-device
"I have a Panasonic FZ-G1 MkIII Toughpad touchscreen tablet PC which
is based on an x86-64bit Intel® Core™ i5-5300U CPU @ 2.30GHz, with 4Gb
RAM.
This is dual-booted with Windows 10 Pro 64bit (build 1803) and Ubuntu
18.04.1 LTS 64bit.
The mobile sim is a standard giffgaff sim which works fine in Windows
on this machine - it is recognised and internet access via it works,
detected as LTE (4G). So this proves that the sim is working correctly
with the WLAN modem hardware in this tablet.
However, when the same tablet is booted into Ubuntu 18.04.1 LTS 64bit,
the same sim that worked in the Windows partition, does not work in
Ubuntu. Error message: "Connection Failed: Activation of network
connection failed" pops up when attempting connection via Settings. "
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