Re: Mobile Broadband - how do I trace/debug the modem initialisation?

[Dan Williams <dcbw redhat com>]

On Tue, 2008-10-21 at 10:54 +0200, Craig Main wrote:
> On Tue, 2008-10-21 at 10:47 +0200, Per Hallsmark wrote: 
> > Hi,
> > 
> > The 5530 string triggers me... :-)
> > I would believe it to be some other vendor than broadcom.
> > 
> > It probably would be supported by the mbm plugin.
> > The reason you get errors on atz is because it uses at&f instead (an 
> > alias sort of to atz)
> > Also, the modem comes up with cfun=4 (rf disabled) and an cfun=1 makes 
> > rf enabled.
> > Doing a cfun=0, which modemmanager currently does as close down, will 
> > power off
> > the modem...
> > 
> > 
> My apologies, you are quite correct, it is a Dell Device: 
> Bus 008 Device 004: ID 413c:8147 Dell Computer Corp. 
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            2 Communications
>   bDeviceSubClass         0 
>   bDeviceProtocol         0 
>   bMaxPacketSize0        64
>   idVendor           0x413c Dell Computer Corp.
>   idProduct          0x8147 
>   bcdDevice            0.00
>   iManufacturer           1 Dell
>   iProduct                2 Dell Wireless 5530 HSPA Mobile Broadband Minicard Device
> 
> 
> The modem defaults to cfun=4 on startup, so one needs to issue a cfun=1 before using it to connect. You are also correct about AT&F working.

NM SVN since late september will power on the device with AT+CFUN=1
before trying to use it.  NM SVN won't try to set the device off with
CFUN=0 at all.

Dan