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Re: serial 3G modem connection

2011/4/8 Dan Williams <dcbw redhat com>:
> On Thu, 2011-04-07 at 18:19 +0100, Andy Maginnis wrote:
>> When the modem is plugged into the serial port
>>
>> joker@jokersPc:~$ sudo udevadm info --query=property --name=/dev/ttyS0
>> UDEV_LOG=3
>> DEVPATH=/devices/pnp0/00:0b/tty/ttyS0
>> MAJOR=4
>> MINOR=64
>> DEVNAME=/dev/ttyS0
>> SUBSYSTEM=tty
>> DEVLINKS=/dev/char/4:64
>
> Ok, one more...
>
> cd -P /sys/class/tty/ttyS0
> ls -al device/
>
> and paste in what the 'driver' and 'subsystem' links are in there.  For
> reference, I get:
>
>  driver -> ../../../bus/pci/drivers/serial
>  subsystem -> ../../../bus/pci
>
> Dan
>
>
>> For reference this is what I see running the same command when the modem
>> is plugged into the USB port
>>
>> joker@jokersPc:~$ sudo udevadm info --query=property --name=/dev/ttyUSB1
>> UDEV_LOG=3
>> DEVPATH=/devices/pci0000:00/0000:00:1d.2/usb4/4-2/4-2:1.0/ttyUSB1/tty/ttyUSB1
>> MAJOR=188
>> MINOR=1
>> DEVNAME=/dev/ttyUSB1
>> SUBSYSTEM=tty
>> ID_PORT=0
>> ID_PATH=pci-0000:00:1d.2-usb-0:2:1.0
>> ID_VENDOR=Telit_Wireless_Solutions
>> ID_VENDOR_ENC=Telit\x20Wireless\x20Solutions
>> ID_VENDOR_ID=1bc7
>> ID_MODEL=Telit_HSDPA_Wireless_Modem
>> ID_MODEL_ENC=Telit\x20HSDPA\x20Wireless\x20Modem\x20\x20\x20\x20
>> ID_MODEL_ID=1003
>> ID_REVISION=0000
>> ID_SERIAL=Telit_Wireless_Solutions_Telit_HSDPA_Wireless_Modem_000000000002
>> ID_SERIAL_SHORT=000000000002
>> ID_TYPE=generic
>> ID_BUS=usb
>> ID_USB_INTERFACES=:ffffff:
>> ID_USB_INTERFACE_NUM=00
>> ID_USB_DRIVER=option
>> ID_IFACE=00
>> DEVLINKS=/dev/gsmmodem /dev/char/188:1 /dev/serial/by-path/pci-0000:00:1d.2-usb-0:2:1.0-port0 /dev/serial/by-id/usb-Telit_Wireless_Solutions_Telit_HSDPA_Wireless_Modem_000000000002-if00-port0
>>
>> -----Original Message-----
>> From: Dan Williams [mailto:dcbw redhat com]
>> Sent: 06 April 2011 23:09
>> To: Andy Maginnis
>> Cc: networkmanager-list gnome org
>> Subject: RE: serial 3G modem connection
>>
>> On Tue, 2011-04-05 at 23:15 +0100, Andy Maginnis wrote:
>> > Dan, thanks for the info,
>> >
>> > I am using 2 systems, one is Ubuntu running on a desktop PC and the other
>> > a gumstix running an Angstrom distribution.
>>
>> Can you run this for me, as root?
>>
>> udevadm info --query=property --name=/dev/ttyS0
>>
>> Dan
>>
>> > Is the whitelist something I can add to?
>> >
>> > My standard Ubuntu Machine
>> >
>> > Linux jokersPc 2.6.35-28-generic-pae #49-Ubuntu SMP Tue Mar 1 14:58:06 UTC 2011 i686 GNU/Linux
>> > Module                  Size  Used by
>> > ppp_deflate             3726  0
>> > zlib_deflate           19266  1 ppp_deflate
>> > ppp_async               6778  1
>> > crc_ccitt               1351  1 ppp_async
>> > binfmt_misc             6599  1
>> > parport_pc             26378  0
>> > ppdev                   5556  0
>> > snd_hda_codec_via      51755  1
>> > snd_hda_intel          22299  2
>> > snd_hda_codec          87552  2 snd_hda_codec_via,snd_hda_intel
>> > snd_hwdep               5040  1 snd_hda_codec
>> > snd_pcm                71603  2 snd_hda_intel,snd_hda_codec
>> > snd_seq_midi            4588  0
>> > snd_rawmidi            17783  1 snd_seq_midi
>> > snd_seq_midi_event      6047  1 snd_seq_midi
>> > snd_seq                47174  2 snd_seq_midi,snd_seq_midi_event
>> > snd_timer              19067  2 snd_pcm,snd_seq
>> > snd_seq_device          5744  3 snd_seq_midi,snd_rawmidi,snd_seq
>> > snd                    49038  13 snd_hda_codec_via,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
>> > i915                  296139  3
>> > option                 13453  0
>> > usb_wwan                9953  1 option
>> > drm_kms_helper         30200  1 i915
>> > drm                   168732  3 i915,drm_kms_helper
>> > i2c_algo_bit            5168  1 i915
>> > lp                      7342  0
>> > video                  18712  1 i915
>> > soundcore                880  1 snd
>> > snd_page_alloc          7216  2 snd_hda_intel,snd_pcm
>> > ftdi_sio               30070  1
>> > led_class               2633  0
>> > asus_atk0110           11423  0
>> > parport                31492  3 parport_pc,ppdev,lp
>> > usbserial              33357  5 option,usb_wwan,ftdi_sio
>> > output                  1883  1 video
>> > joydev                  8767  0
>> > intel_agp              26926  2 i915
>> > agpgart                32075  2 drm,intel_agp
>> > psmouse                59033  0
>> > serio_raw               4022  0
>> > usbhid                 36978  0
>> > hid                    67742  1 usbhid
>> > r8169                  36777  0
>> > mii                     4425  1 r8169
>> >
>> > The Gumstix
>> >
>> > Linux overo 2.6.32 #1 Sun Nov 21 16:22:56 GMT 2010 armv7l unknown
>> > root@overo:~# lsmod
>> > Module                  Size  Used by
>> > ppp_deflate             4044  0
>> > bsd_comp                5013  0
>> > sha1_generic            1861  0
>> > ppp_mppe                6104  0
>> > ppp_async               6731  0
>> > ppp_generic            17037  4 ppp_deflate,bsd_comp,ppp_mppe,ppp_async
>> > slhc                    5381  1 ppp_generic
>> > dsplinkk              129945  4
>> > ipv6                  225222  10
>> > option                 15175  1
>> > usbserial              31694  3 option
>> > ads7846                 8695  0
>> >
>> >
>> >
>> >
>> > -----Original Message-----
>> > From: Dan Williams [mailto:dcbw redhat com]
>> > Sent: 05 April 2011 03:45
>> > To: Andy Maginnis
>> > Cc: networkmanager-list gnome org
>> > Subject: Re: serial 3G modem connection
>> >
>> > On Thu, 2011-03-31 at 22:37 +0100, Andy Maginnis wrote:
>> > > I have a 3G Telit modem with a USB and Serial connection. The usb
>> > > connection
>> > > works fine with network manager, but when I try and use the serial
>> > > connection
>> > > I see the following in the modem manager debug output
>> > >
>> > > ** (modem-manager:7380): DEBUG: (tty/ttyS0): could not get port's parent
>> > > device
>> >
>> > ModemManager will ignore most platform serial ports since most modems
>> > these days are USB, and we can't really autodetect platform serial
>> > devices.  So there's a whitelist for platform serial ports.  What kind
>> > of system do you have?  Can you reply with the output of "lsmod" which
>> > might give us the kernel module that we can whitelist?
>> >
>> > Dan
>> >
>> > > The modem is attached to /dev/ttyS0 and I can get an internet connection
>> > > using
>> > > a manual pppd connection. It seems that my modem setting in NM are not
>> > > valid for
>> > > the modem when connected through the serial port.
>> > >
>> > > How can I get this under networkManager control?
>> > >
>> > > When I do run it manually I see the following output appear in the
>> > > network/modem manager
>> > > debug trace.
>> > >
>> > > NetworkManager[7393]:    SCPlugin-Ifupdown: devices added (path:
>> > > /sys/devices/virtual/net/ppp0, iface: ppp0)
>> > > NetworkManager[7393]:    SCPlugin-Ifupdown: device added (path:
>> > > /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration
>> > > found.
>> > > ** (modem-manager:7380): DEBUG: (net/ppp0): could not get port's parent
>> > > device
>> > > NetworkManager[7393]:    SCPlugin-Ifupdown: devices removed (path:
>> > > /sys/devices/virtual/net/ppp0, iface: ppp0)

# udevadm info --query=property --name=/dev/ttyACM1
UDEV_LOG=3
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4.1/2-4.1.2/2-4.1.2:1.2/tty/ttyACM1
MAJOR=166
MINOR=1
DEVNAME=/dev/ttyACM1
SUBSYSTEM=tty
ID_PATH=pci-0000:00:1d.7-usb-0:4.1.2:1.2
ID_VENDOR=Onda
ID_VENDOR_ENC=Onda
ID_VENDOR_ID=1ee8
ID_MODEL=MW833UP
ID_MODEL_ENC=MW833UP
ID_MODEL_ID=0012
ID_REVISION=0001
ID_SERIAL=Onda_MW833UP_2F583D09F4D43991C1DF57CB25AAE11BF4600BF1
ID_SERIAL_SHORT=2F583D09F4D43991C1DF57CB25AAE11BF4600BF1
ID_TYPE=generic
ID_BUS=usb
ID_USB_INTERFACES=:020201:0a0000:020600:080650:
ID_USB_INTERFACE_NUM=02
ID_USB_DRIVER=cdc_acm
ID_IFACE=02
DEVLINKS=/dev/char/166:1
/dev/serial/by-path/pci-0000:00:1d.7-usb-0:4.1.2:1.2
/dev/serial/by-id/usb-Onda_MW833UP_2F583D09F4D43991C1DF57CB25AAE11BF4600BF1-if02


-- 
Vincenzo Romano at NotOrAnd Information Technologies
Software Hardware Networking Training Support Security
--
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--
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