Problems with HP lt4112 Gobi 4G Module

[Dan Williams]

On Thu, 2016-02-18 at 19:43 +0100, Harald Jung wrote:
> Hi,
> 
> the strange thing is I'm still able to obtain stuff by an dhcp
> request, 
> so it is not "really" disconnected.
> 
> qmicli -d /dev/cdc-wdm0 --wds-start-network=web.vodafone.de 
> --client-no-release-cid
> [/dev/cdc-wdm0] Network started
>          Packet data handle: '1138179280'
> [/dev/cdc-wdm0] Client ID not released:
>          Service: 'wds'
>              CID: '5'
> ThinClient,initial:root:~ $ qmicli -d /dev/cdc-wdm0 
> --wds-get-current-settings --client-no-release-cid --client-cid=5
> error: couldn't get current settings: QMI protocol error (15):
> 'OutOfCall'
> [/dev/cdc-wdm0] Client ID not released:
>          Service: 'wds'
>              CID: '5'
> ThinClient,initial:root:~ $ /usr/sbin/dhcpcd -B -K -L -A -G -c 
> /usr/libexec/nm-dhcp-helper -4 wwan0
> wwan0: rebinding lease of 109.84.22.83
> wwan0: leased 109.84.22.83 for 7200 seconds
> wwan0: adding route to 109.84.22.80/29

My original thought after reading your logs was that the device was
just stupid and that it might work with DHCP.  I got side-tracked
trying to bring up my ME906E (which your lt4112 is an OEM version of,
though yours runs QMI and the stock ME906E does NDISDUP).

But given that the device clearly still has NDISDUP commands lying
around in its firmware, perhaps the lt4112 only likes DHCP?  I'd love
to see the "AT^DHCP?" output from that device once it's connected, can
you get that?  Even if you send it to the modem, it might get read by
ModemManager and appear in the MM logs, FYI.

Dan


> Harald
> 
> Am 18.02.2016 um 19:36 schrieb Bjørn Mork:
> > Harald Jung <harald.jung at ecos.de> writes:
> > 
> > > [18 Feb 2016, 19:35:12] [Debug] [/dev/cdc-wdm0] Received message
> > > (translated)...
> > > > > > > > > QMUX:
> > > > > > > > >    length  = 33
> > > > > > > > >    flags   = 0x80
> > > > > > > > >    service = "wds"
> > > > > > > > >    client  = 255
> > > > > > > > > QMI:
> > > > > > > > >    flags       = "indication"
> > > > > > > > >    transaction = 0
> > > > > > > > >    tlv_length  = 21
> > > > > > > > >    message     = "Packet Service Status" (0x0022)
> > > > > > > > > TLV:
> > > > > > > > >    type       = "Connection Status" (0x01)
> > > > > > > > >    length     = 2
> > > > > > > > >    value      = 01:00
> > > > > > > > >    translated = [ status = 'disconnected'
> > > reconfiguration_required = 'no' ]
> > > > > > > > > TLV:
> > > > > > > > >    type       = "Call End Reason" (0x10)
> > > > > > > > >    length     = 2
> > > > > > > > >    value      = 02:00
> > > > > > > > >    translated = generic-client-end
> > > > > > > > > TLV:
> > > > > > > > >    type       = "Verbose Call End Reason" (0x11)
> > > > > > > > >    length     = 4
> > > > > > > > >    value      = 03:00:D0:07
> > > > > > > > >    translated = [ type = 'cm' reason = '2000' ]
> > > > > > > > > TLV:
> > > > > > > > >    type       = "IP Family" (0x12)
> > > > > > > > >    length     = 1
> > > > > > > > >    value      = 04
> > > > > > > > >    translated = ipv4
> > OK, this is interesting although I have no idea why it
> > happens.  But you
> > are disconnected for reason '2000', whatever that is.
> > 
> > 
> > Bjørn
> 
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