View Full Version : [ubuntu] sony ericsson md400 neewbe.

June 3rd, 2009, 05:53 PM
Hi plz help me install and config my sonyericcson md400 telenor 3g modem. I cant get it work PLz help.
MVH kristoffer

June 3rd, 2009, 06:27 PM
Hi koffejensen,
what is the exact version of Ubuntu? (9.04?)

Right click the Network Manager icon (at default is on top panel, left to the speaker sign), Edit Connections, Mobile Broadband. Click on any existing connection and delete it. Then shut down, boot without the modem, wait for the system to stabilise, attach the modem, wait 1 minute (maximum) for a wizard to start. If started, follow instructions to setup the connection. Left click network Manager icon and then the provider's name to connect.

If the wizard does not appear, open a terminal window (Applications > Accessories, Terminal) and try:

ls /dev/ttyU* /dev/ttyA* /dev/ttyH*

Post here the last 10-15 lines of dmesg (concerning /dev/tty... and usbserial or option driver).
Post the output of the other two commands.

The dmesg command will show all system activity after inserting the modem, lsusb will show all USB peripherals attached and their vendor/product IDs and ls /dev/tty... will list any configured serial communication ports.


June 3rd, 2009, 07:38 PM
thanx i will try , and yes its 9.04 :p

June 8th, 2009, 07:14 AM

I worked out a way to get my MD400 and bredbandsbolaget modem yesterday using the usb_modeswitch program that can be downloaded

The modem can be switched with the command given in

I have not tried to make this work automatically yet but it should be possible.