Avvio di ModemManager.service fallito

Salve ragazzi,

non riuscendo nel tentativo di riutilizzare una mia chiavetta internet 3G (momo design), mentre NetworkManager funziona per altri tipi di connessioni,
niente accade con la suddetta chiavetta. Non appare nell’elenco delle possibili connessioni. Così, dopo aver cercato nel forum, ho deciso di effettuare le seguenti verifiche:

Kernel:

$ uname -r
3.12.11-201.fc19.x86_64

Network Manager

$ rpm -qa *Manag*
NetworkManager-glib-0.9.8.8-2.fc19.x86_64

Dopo aver inserito la chiavetta:

$ lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 003: ID 05c6:6000 Qualcomm, Inc. Siemens SG75
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 064e:a101 Suyin Corp. Acer CrystalEye Webcam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Modeswitch

$ rpm -qa *usb_*
usb_modeswitch-data-20131113-1.fc19.noarch
usb_modeswitch-1.2.7-3.fc19.x86_64
$ rpm -qa|egrep 'udev|Modem'
system-config-printer-udev-1.4.3-2.fc19.x86_64
libgudev1-204-18.fc19.x86_64
libgudev1-204-18.fc19.i686
ModemManager-0.6.2.0-1.fc19.x86_64
$ dmesg|tail
 1770.801413] usb 2-3: SerialNumber: 4df19e985d7b4fcd
 1770.802613] rndis_host 2-3:1.0: dev can't take 1558 byte packets (max 1520), adjusting MTU to 1462
 1770.803854] rndis_host 2-3:1.0 usb0: register 'rndis_host' at usb-0000:00:1d.7-3, RNDIS device, 02:02:3f:6a:62:3e
 1770.820268] systemd-udevd[3251]: renamed network interface usb0 to enp0s29f7u3
 1952.953396] usb 5-1: USB disconnect, device number 3
 1967.378218] usb 5-1: new full-speed USB device number 5 using uhci_hcd
 1967.523667] usb 5-1: New USB device found, idVendor=05c6, idProduct=6000
 1967.523675] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
 1967.523680] usb 5-1: Product: H3G USB HSDPA Modem
 1967.523684] usb 5-1: Manufacturer: H3G , Incorporated

Quando vado a verificare:

$ systemctl status ModemManager.service
ModemManager.service
   Loaded: error (Reason: No such file or directory)
   Active: inactive (dead)

mar 04 16:13:36 aspire5920g systemd[1]: [/usr/lib/systemd/system/ModemManager.service:1] Unknown section 'D-BUS Service'. Ignoring.
mar 04 16:13:36 aspire5920g systemd[1]: [/usr/lib/systemd/system/ModemManager.service:2] Assignment outside of section. Ignoring.
mar 04 16:13:36 aspire5920g systemd[1]: [/usr/lib/systemd/system/ModemManager.service:3] Assignment outside of section. Ignoring.
mar 04 16:13:36 aspire5920g systemd[1]: [/usr/lib/systemd/system/ModemManager.service:4] Assignment outside of section. Ignoring.
mar 04 16:13:36 aspire5920g systemd[1]: ModemManager.service lacks ExecStart setting. Refusing.

Così provo ad abilitare, ma ottengo:

$ systemctl enable ModemManager.service
systemctl enable ModemManager.service
Failed to issue method call: No such file or directory

E uno start mi fornisce:
Così provo ad abilitare, ma ottengo:

$ systemctl start ModemManager.service
Failed to issue method call: Unit ModemManager.service failed to load: No such file or directory. See system logs and 'systemctl status ModemManager.service' for details.

Potrebbe essere ModemManager il problema? Perché non trova il file che cerca pur essendo ModemManager installato?

Grazie!

Vediamo

$ rpm -qa ModemMana\*

Ecco:

$ rpm -qa ModemMana\*
ModemManager-0.6.2.0-1.fc19.x86_64

Il servizio systemd compare solo da F20, vediamo

# journalctl -a -b --no-pager _PID=$(pidof modem-manager)