How can I remove modem-manager from boot?

Question

I would like to remove modem-manager service from my boot, how can I do it ?

Found this question after getting intermittent "SAM-BA operation failed" error using Arduino IDE to flash an Adafruit Feather M0- see https://digistump.com/board/index.php/topic,1163.msg5363.html?PHPSESSID=6b11pdf6b0iqm1snijl7ar8rt4#msg5363 . Executing `systemctl status ModemManager.service` shows that modem-manager is the culprit: `Could not grab port (tty/ttyACM0): 'Cannot add port 'tty/ttyACM0', unhandled serial type'` — Roberto Tyley, Mar 18 '17 at 23:06

score 30 · Answer 1 · edited Aug 14 '20 at 21:20

30

systemctl disable ModemManager.service
systemctl stop ModemManager.service

This worked to disable UML-295 modem from being managed by ModemManger which in turn enabled web-control via http://mbb.vzw.com on CentOS 7.

Check after disabling via:

systemctl list-dependencies multi-user.target | grep Modem

edited Aug 14 '20 at 21:20

Merlijn Sebrechts

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answered Apr 22 '15 at 22:01

seg-11

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working for Ubuntu 16.04. Deactivates for me most of my "SetLineState" on my USB-Trace. – Cutton Eye Mar 07 '18 at 13:22
3

Short Answer: `sudo systemctl disable ModemManager` – Melroy van den Berg Mar 14 '19 at 22:06

score 10 · Answer 2 · answered May 25 '13 at 10:24

10

The simplest way is to:

sudo apt-get purge modemmanager

Works fine in 12.04 LTS. Nothing in my system had dependencies on modemmanager.

Or you could search for "modemmanager" in the Ubuntu Software Center and remove it from there (the title is "D-Bus service for managing modems").

answered May 25 '13 at 10:24

mivk

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you are right but does you need it for connection with mobile phone ? – Postadelmaga May 25 '13 at 19:51
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@Postadelmaga: Well, I guess it depends how your software connects to your phone. If you find you do need it after all, you can always re-install it with `sudo apt-get install modemmanager`, no? – mivk May 27 '13 at 17:39
3

you are right, but what happen if I have no internet connection in that moment ( and y should I use my phone to navigate if I have internet :) What I'm looking for is a way to not load it every boot, but still be able to run it if I need it .... – Postadelmaga May 28 '13 at 10:22

Postadelmaga · Accepted Answer · 2013-05-28T10:25:57.260

5

This it looks to work fine:

sudo mv /usr/share/dbus-1/system-services/org.freedesktop.ModemManager.service /usr/share/dbus-1/system-services/org.freedesktop.ModemManager.service.disabled

Instead this doesn't work ( don't know y ):

"echo manual | sudo tee -a /etc/init/modemmanager.override"

edited May 28 '13 at 10:25

answered Nov 14 '12 at 04:16

Postadelmaga

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As of `ubuntu 14.04` and `Linux Mint 17.3`, it is `ModemManager1`; I'm now used to do also `sudo ugo-x /usr/sbin/ModemManager`. – metadings Jun 12 '16 at 20:32

score 0 · Answer 4 · edited Feb 03 '19 at 08:41

I found this had only a deleterious function when I tried the experimental version in Debian Sid and it failed to find my modem at all. That nearly doubled my speed and drops and failures became rare. I will probably remove it but for the time I want it to suspend function.

In /etc/init.d I stored this file:

#!/bin/sh
# NOMODEMMANAGER.sh DHM, Feb'19
# The ModemManager appears to slow down and interfere with the internet on my Dell laptop.
ModemManager --no-auto-scan

score 0 · Answer 5 · edited Apr 22 '15 at 22:29

0

If it is SysV init style symbolic links
```
update-rc.d [-n] [-f] base_name remove
```
If it is per user (X11 session), check the following folders and remote corresponding files:
```
~/.config/autostart    
/etc/xdg/autostart
```

edited Apr 22 '15 at 22:29

muru

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answered Nov 12 '12 at 08:57

Terry Wang

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thank u but it is not a SysV init ... it is a upstart service, see my answer below – Postadelmaga Nov 14 '12 at 04:17

How can I remove modem-manager from boot?

5 Answers5

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