Ubuntu
modemmanager package

  1. Bug #556323
  2. Comment #8

Comment 8 for bug 556323

Revision history for this message
Daniel Jour (danieloertwig) wrote :

No, turning it off using the /sys/devices/... switch works fine for me. The LED goes off, signalling that the modem is not powered.
It can be powered on again using the switch and can then be used to connect.

Yes, there is a physical button to completely disable it.
But:

This button disables ALL wireless communications: WLAN, bluetooth, WWAN.

Switching the physical button again, turns ON WLAN and bluetooth again, and is therefore useful to "switch the modem off" to save power. But unfortunately, networkmanager seems to have problems (sometimes) using the interface THEN again.
I only noticed this because I tried today, this used to work some time ago o.O

See here:
http://www.thinkwiki.org/wiki/Ericsson_F3507g_Mobile_Broadband_Module#Turning_the_card_off