sony-ericsson w300i dont connect

Gilles Gravier gilles at
Thu Oct 2 19:44:15 UTC 2008

Hi, mota!

Actually, probably many many things are happening when you do this...
but you aren't seeing them. Maybe because you aren't looking for, or
expecting the right thing.

First things first... what do you want to do with that phone?

They tend to do many things when plugged into a USB port...

So try this first :

In a terminal window, type :

*tail -f /var/adm/messages*

Type [ENTER] a few times in the window to get a few blanc lines to
separate what happens. Then plug your USB device. You should get
something like this :

Oct  2 21:27:21 nanotink kernel: [  260.293946] usb 2-1: new full speed
USB device using uhci_hcd and address 2
Oct  2 21:27:21 nanotink kernel: [  260.307622] usb 2-1: configuration
#1 chosen from 1 choice
Oct  2 21:27:22 nanotink kernel: [  261.302431] cdc_acm 2-1:1.1:
ttyACM0: USB ACM device
Oct  2 21:27:22 nanotink kernel: [  261.308390] cdc_acm 2-1:1.3:
ttyACM1: USB ACM device
Oct  2 21:27:22 nanotink kernel: [  261.312861] usbcore: registered new
interface driver cdc_acm
Oct  2 21:27:22 nanotink kernel: [  261.313647]
/build/buildd/linux-2.6.24/drivers/usb/class/cdc-acm.c: v0.25:USB
Abstract Control Model driver for USB modems and ISDN adapters

This tells you that the phone is recognized as a modem... and that it is
plugged as */dev/ttyACM0* and */dev/ttyACM1*

Note that some phones also export themselves as a USB drive... the one I
plugged in on my machine doesn't. If it did, it would have mounted the
drive and you would have seen an icon on the screen.

Since this is a modem, you can try installing a software like
"*minicom*" (it's in the repositories) and connect to your phone... Set
*speed to 38400 bps*, and *words to 7E1*... and your serial port to*
/dev/ttyACM0* then when you connect, you should be able to type *ATZ*
[ENTER] and get an OK prompt.

If you type *ATI* [ENTER] it will give you the model of your phone (mine
gives Sony Ericsson Z520)

Again, your post didn't say what you were trying to achieve. The
instructions I give will at least enable you to verify that the phone
talks to the USB on your Ubuntu machine.


mota wrote:
> Hi!
> I have a sony-ericsson and i'm trying to connect it to ubuntu 8.04, but
> it don't connect.
> It was supose to appear an icon when the USB was plugged...but no
> reaction at all...
> any help over here?

/*Gilles Gravier*/ *=* *Gilles at* <mailto:Gilles at>
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