how to disable ModemManager?

rsk · #1 2nd June 2012, 02:36 PM

Hi, does anyone know how to disable modem manager?
I'm running f-17 on a desktop machine and it will never have a modem connected so it seem just a waste of startup time/ resourse to even start it.
But so far I can't see a way to disable it -- maybe I'll try uninstalling it ( but I don't think that will work due to dependencies)

UPDATE : No, uninstall won't work without removing NetwirkManger and lots of other stuff too.

stevea · #2 2nd June 2012, 02:48 PM

It's started only from the Dbus interface on request. So if shouldn't run unless you configure/request it.
Make sure it's not configured in NetworlkManager.

rsk · #3 2nd June 2012, 02:58 PM

Thanks.
I haven't configured it and I don't see why it shoud get requested. Any ideas where in the NetworkManger config I should look?
I'm running KDE and the wireless & Mobile tabs are greyed out.

stevea · #4 2nd June 2012, 03:20 PM

For a lot of silly/bad reasons, Fedora has creeping package dependency problems.

So IF you install NetworkManager, which is a default, then you must install ModemManager.
This is in fact really stupid. NM *should* be designed to use MM if present and ignore it if not.
In fact that's exactly the kind of independence that Dbus should permit.

So if you didn't configure it - you're good.
I don't use NM on the current system, but I THINK if you right click the icon, select something like 'configure networks' and you get a window with tabs for wireless, wired ... . I imagine any modem setup is under 'wired', but that's a guess.

rsk · #5 2nd June 2012, 04:51 PM

I can't find where this gets configured, the KDE NetworkManager app doesn't given me anything useful.
NM starts MM on every boot, and I get load of pointless loading messages in the log.
I guess I'll have to look at the source and try work out what the stupid thing is doing!
I agree, fedora as a whole seems to be suffering from feature creap not just NM.

fordmason · #6 10th June 2012, 10:37 PM

I am having the same issues with ModemManager. I have an 8-port serial card and none of the devices attached are modems. ModemManager opening each of the ports at startup seems to cause nut-driver (part of UPS monitoring) to fail. I too was really frustrated by having such nannying software foisted upon me.

aleksander · #7 12th November 2012, 06:56 AM

Quote:

Originally Posted by rsk

Hi, does anyone know how to disable modem manager?
I'm running f-17 on a desktop machine and it will never have a modem connected so it seem just a waste of startup time/ resourse to even start it.
But so far I can't see a way to disable it -- maybe I'll try uninstalling it ( but I don't think that will work due to dependencies)

UPDATE : No, uninstall won't work without removing NetwirkManger and lots of other stuff too.

Since F18 you will be able to skip the installation of ModemManager.

---------- Post added at 06:54 AM ---------- Previous post was at 06:53 AM ----------

Quote:

Originally Posted by stevea

It's started only from the Dbus interface on request. So if shouldn't run unless you configure/request it.
Make sure it's not configured in NetworlkManager.

If installed, NetworkManager will always try to start ModemManager. ModemManager automatically detects new modems that get plugged in, and for that it needs to be running.

---------- Post added at 06:56 AM ---------- Previous post was at 06:54 AM ----------

Quote:

Originally Posted by fordmason

I am having the same issues with ModemManager. I have an 8-port serial card and none of the devices attached are modems. ModemManager opening each of the ports at startup seems to cause nut-driver (part of UPS monitoring) to fail. I too was really frustrated by having such nannying software foisted upon me.

ModemManager has a blacklist of USB vendor/product IDs, so that if any of those is found it doesn't try to probe the ports to check if they are modems or not. If you find such a case, please open a bug in NetworkManager/ModemManager specifying the USB vendor/product IDs. If you are using real RS232 ports, ModemManager shouldn't probe those by default.

jhhaynes · #8 4th February 2013, 07:10 PM

Quote:

Originally Posted by aleksander

Since F18 you will be able to skip the installation of ModemManager.. If you are using real RS232 ports, ModemManager shouldn't probe those by default.

My machine has a Real RS-232 port and modem manager is turning it on during bootup and turns
it back off after I get logged in on the console. I've temporarily fixed the problem by renaming
the modem manager executable; but it shouldn't get turned on by default anyway. This is
in F18.

sonoran · #9 4th February 2013, 07:54 PM

While looking through my F18 systemd journal the other day I noticed that Modem Manager was starting
and loading something like 24 plugin modules - and I have no modem on this box. I selected to remove
Modem Manager in yumex and there were no dependencies.

Can't say I see any difference without it but I do feel much better.

vallimar · #10 5th February 2013, 02:31 PM

In F18, NetworkManager had a few dependencies removed. ModemManager and some wireless
things are no longer forced. For older versions, if you want to prevent automatic startup, you can
remove the file: /usr/share/dbus-1/system-services/org.freedesktop.ModemManager.service