Public bug reported:
Thinkpad X1 Gen12 has a variant that comes with Quectel RM520N-GL
modems. These modems require FCC unlock scripts for ModemManager to
work. It's not possible to install the unlock package through apt due to
some kind of misconfiguration of deb package itself.
I found this through "Additional Drivers" app which suggests lenovo-
fccunlock package (it's the same list as the output of `ubuntu-drivers
list`).
Fortunately, there's a workaround (which would be better to not use):
```
sudo ln -sft /etc/ModemManager/fcc-unlock.d
/usr/share/ModemManager/fcc-unlock.available.d/*
```
Apt output:
```
$ sudo apt install lenovo-fccunlock
Installing:
lenovo-fccunlock
Summary:
Upgrading: 0, Installing: 1, Removing: 0, Not Upgrading: 0
1 not fully installed or removed.
Download size: 0 B / 45.1 kB
Space needed: 205 kB / 207 GB available
(Reading database ... 148270 files and directories currently installed.)
Preparing to unpack .../lenovo-fccunlock_2.0.0-0ubuntu2_amd64.deb ...
Unpacking lenovo-fccunlock (2.0.0-0ubuntu2) ...
dpkg: error processing archive
/var/cache/apt/archives/lenovo-fccunlock_2.0.0-0ubuntu2_amd64.deb (--unpack):
unable to open '/usr/lib/systemd/system/lenovo-fccunlock.service.dpkg-new': No
such file or directory
No apport report written because the error message indicates an issue on the
local system
Errors were encountered while processing:
/var/cache/apt/archives/lenovo-fccunlock_2.0.0-0ubuntu2_amd64.deb
Error: Sub-process /usr/bin/dpkg returned an error code (1)
```
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: lenovo-fccunlock (not installed)
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 19 07:23:56 2025
InstallationDate: Installed on 2025-10-17 (2 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=tmux-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: lenovo-wwan-unlock
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lenovo-wwan-unlock (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing wayland-session
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2128987
Title:
Can't install lenovo-fccunlock due to missing lenovo-
fccunlock.service.dpkg-new
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lenovo-wwan-unlock/+bug/2128987/+subscriptions
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