RE: serial 3G modem connection

From: "Andy Maginnis" <jam smru co uk>
To: "Andy Maginnis" <jam smru co uk>, "Dan Williams" <dcbw redhat com>
Cc: networkmanager-list gnome org
Subject: RE: serial 3G modem connection
Date: Tue, 12 Apr 2011 17:43:25 +0100
Hi Dan,
got the new modem, but no change in the output. I tried to trace the
path back a bit to give you some more info.

joker@jokersPc:/sys/devices/pnp0/00:0b/tty/ttyS0$ ls -la device
lrwxrwxrwx 1 root root 0 2011-04-12 16:58 device -> ../../../00:0b

joker@jokersPc:/sys/devices/pnp0/00:0b/tty/ttyS0$ sudo ls -la
../../../00\:0b/driver
lrwxrwxrwx 1 root root 0 2011-04-12 16:59 ../../../00:0b/driver ->
../../../bus/pnp/drivers/serial

joker@jokersPc:/sys/devices/pnp0/00:0b/tty/ttyS0$ ls -la
../../../../../bus/pnp/drivers/serial/
total 0
drwxr-xr-x 2 root root    0 2011-04-12 16:59 .
drwxr-xr-x 6 root root    0 2011-04-12 16:50 ..
lrwxrwxrwx 1 root root    0 2011-04-12 16:59 00:0b ->
../../../../devices/pnp0/00:0b
--w------- 1 root root 4096 2011-04-12 16:59 bind
--w------- 1 root root 4096 2011-04-12 16:59 uevent
--w------- 1 root root 4096 2011-04-12 16:59 unbind

joker@jokersPc:/sys/devices/pnp0/00:0b/tty/ttyS0$ ls -la
../../../../../bus/pnp/drivers/serial/00\:0b/
total 0
drwxr-xr-x  4 root root    0 2011-04-12 16:50 .
drwxr-xr-x 18 root root    0 2011-04-12 16:50 ..
lrwxrwxrwx  1 root root    0 2011-04-12 16:59 driver ->
../../../bus/pnp/drivers/serial
lrwxrwxrwx  1 root root    0 2011-04-12 16:59 firmware_node ->
../../LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:03/PNP0501:00


-----Original Message-----
From: networkmanager-list-bounces gnome org
[mailto:networkmanager-list-bounces gnome org] On Behalf Of Andy
Maginnis
Sent: 08 April 2011 16:36
To: Dan Williams
Cc: networkmanager-list gnome org
Subject: RE: serial 3G modem connection

Hi Dan,
I get
joker@jokersPc:/sys/devices/pnp0/00:0b/tty/ttyS0$ ls -al device
lrwxrwxrwx 1 root root 0 2011-04-08 16:32 device -> ../../../00:0b

with nothing plugged into the port, unfortunately I fried my modem
somehow this morning reconfiguring the GPIO, so it may be early next
week before I get a replacement to try this command out on. 

I'll let you know as soon as it's in.
Many thanks
Andy

-----Original Message-----
From: Dan Williams [mailto:dcbw redhat com]
Sent: 07 April 2011 23:41
To: Andy Maginnis
Cc: networkmanager-list gnome org
Subject: RE: serial 3G modem connection

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_00000000
> 0002
> 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_Mo
> dem_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_rawm
idi,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) 
> > > _______________________________________________
> > > networkmanager-list mailing list
> > > networkmanager-list gnome org
> > > http://mail.gnome.org/mailman/listinfo/networkmanager-list
> > 
> > 
> 
> 


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References:
- Re: serial 3G modem connection
  - From: Dan Williams
- RE: serial 3G modem connection
  - From: Andy Maginnis
- RE: serial 3G modem connection
  - From: Dan Williams
- RE: serial 3G modem connection
  - From: Andy Maginnis
- RE: serial 3G modem connection
  - From: Dan Williams
- RE: serial 3G modem connection
  - From: Andy Maginnis
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