CDMA Mobile Broadband USB Modem Manager program

English Network/Internet
1

I’m using a ‘ice.net’ D-50 (CDMA EV-DO rev A) mobile broadband USB modem, also sold as Cmotech CNU-680 in other areas. The modem is connected to a USB port on a hp8710w mobile workstation.

As the 11.2 Gnome Network Manager won’t connect this modem to Internet (see my first post here), I have downloaded and installed a ‘D50 Modem Manager program’ from http://www.ice.no/UserFiles/Drivers/D50/D-50_Linux_1_6.zip

After unpacking and installing this cmotech-qtmodem-1.6-1.i586.rpm package for suse on 11.2 x86_64, the gui application ‘D-50 Modem Manager’ is found in the Internet Group.
However, neither this program does connect the D-50 modem really on 11.2 x86_64 (as it did on 11.1 x86_64). Tried both traditional network setup and with Network Manager.

Any idea and suggestion how to trobleshoot this further? I think I’ve seen that a newer version cmotech-qtmodem 1.9 has been mentioned on the web, but without being able to find and download this version.

Command output as follows:

With NM network setup

As normal user:

~> cmotech-qtmodem
mainWindowBase::setProperty( “windowTitle”, value ) failed: property invalid, read-only or does not exist
statWindowBase::setProperty( “windowTitle”, value ) failed: property invalid, read-only or does not exist
Kernel supports ppp alright.
pppd: Can’t open options file /etc/ppp/filters: Permission denied
Couldn’t find interface ppp0: No such device
Couldn’t find interface ppp0: No such device
Couldn’t find interface ppp0: No such device
Couldn’t find interface ppp0: No such device
Couldn’t find interface ppp0: No such device
…snip…

On the Modem Manager gui: D-50 modem is ready
From Login script Debug window:
starting pppd…

ATZ
OK
ATM1L1
OK
ATDT#777
CONNECT

ls -la /etc/ppp/filters

-rw-r–r-- 1 root root 449 2009-10-19 20:30 /etc/ppp/filters

As root:

cmotech-qtmodem

mainWindowBase::setProperty( “windowTitle”, value ) failed: property invalid, read-only or does not exist
statWindowBase::setProperty( “windowTitle”, value ) failed: property invalid, read-only or does not exist
Kernel supports ppp alright.
Couldn’t find interface ppp0: No such device
QSpinBox::setProperty( “maximum”, value ) failed: property invalid, read-only or does not exist
QSpinBox::setProperty( “minimum”, value ) failed: property invalid, read-only or does not exist
QSpinBox::setProperty( “singleStep”, value ) failed: property invalid, read-only or does not exist
generalDialogBase::setProperty( “windowTitle”, value ) failed: property invalid, read-only or does not exist
QTabWidget::setProperty( “currentIndex”, value ) failed: property invalid, read-only or does not exist
QSlider::setProperty( “maximum”, value ) failed: property invalid, read-only or does not exist
QSpinBox::setProperty( “maximum”, value ) failed: property invalid, read-only or does not exist
QSpinBox::setProperty( “minimum”, value ) failed: property invalid, read-only or does not exist
QSpinBox::setProperty( “maximum”, value ) failed: property invalid, read-only or does not exist
QSpinBox::setProperty( “singleStep”, value ) failed: property invalid, read-only or does not exist
advancedDialogBase::setProperty( “windowTitle”, value ) failed: property invalid, read-only or does not exist
QObject::connect: No such signal QListBox::itemSelectionChanged()
QObject::connect: (sender name: ‘dnsListWidget’)
QObject::connect: (receiver name: ‘advancedDialogBase’)
QObject::connect: No such signal QListBox::itemSelectionChanged()
QObject::connect: (sender name: ‘pppdargListWidget’)
QObject::connect: (receiver name: ‘advancedDialogBase’)

It seemed like the modem connected, but Firefox was not able to connect afterwards (Server not found)

Added the following lines to the ‘empty’
/etc/resolv.conf

domain lan
search lan
nameserver 192.168.192.1

but still Firefox couldn’t connect

tail /var/log/NetworkManager

Apr 10 18:16:03 linux-hudi NetworkManager: <info> (ttyACM0): device state change: 3 → 1 (reason 36)
Apr 10 18:16:03 linux-hudi NetworkManager: <info> (ttyACM0): cleaning up…
Apr 10 18:16:03 linux-hudi NetworkManager: <info> (ttyACM0): taking down device.
Apr 10 18:16:31 linux-hudi NetworkManager: <info> Found new CDMA modem device ‘ttyUSB0’ (driver: ‘option1’).
Apr 10 18:16:31 linux-hudi NetworkManager: <info> (ttyUSB0): exported as /org/freedesktop/ModemManager/Modems/1
Apr 10 18:16:35 linux-hudi NetworkManager: <info> (ttyUSB0): device state change: 1 → 2 (reason 2)
Apr 10 18:16:35 linux-hudi NetworkManager: <info> (ttyUSB0): deactivating device (reason: 2).
Apr 10 18:16:35 linux-hudi NetworkManager: nm_system_device_flush_ip4_routes_with_iface: assertion iface_idx >= 0' failed Apr 10 18:16:35 linux-hudi NetworkManager: nm_system_device_flush_ip4_addresses_with_iface: assertion iface_idx >= 0’ failed
Apr 10 18:16:35 linux-hudi NetworkManager: <info> (ttyUSB0): device state change: 2 → 3 (reason 0)

2

Just a guess here. NetworkManager may not yet be able to adequately handle this device. You may need to treat it as a traditional modem device, and use wvdial, kppp or kinternet dialling utilities instead.

I found this how to which may be useful to you.

Read the section dealing with wvdial and the link they add

ln -s /dev/ttyUSB0 /dev/modem

before configuring via YaST.

You may find you have to use google with ‘16d8:680a CMOTECH’ and similar to dredge up more info.

3

In case my last output section was confusing, this post was not meant to deal with Network Manager’s method to access the CDMA USB D-50 modem. My first post just before this one dealt with Network Manager:
CDMA USB Mobile Broadband Modem via NM
CDMA USB Mobile Broadband Modem via NM - openSUSE Forums

This post was about this modem’s third party D-50 Modem Manager or cmotech-qtmodem program, which is availabel for download for Linux, Mac and Windows from the D-50 modem provider ice.net as mentioned. Here is an url to a screenshot from openSUSE 11.1 x86_64 Gnome, where I got it to work.

Bildr.no

This D-50 Modem Manager (cmotech-qtmodem) gui program replaced the previous ‘modem driver’ RDEVCG

# ./RDEVCHG
# ls -la /dev/ttyACM0
crw-rw---- 1 root uucp 166, 0 2008-07-28 13:41 /dev/ttyACM0

which I got to work on 11.1 (but not on 11.2) in combination with wvdial and the gnome-ppp gui as starting applet. Here is also an url to a screenshot from the latter

Bildr.no

Maybe this clarify more. I also had a look into YaST2 > Modem. The CMOTECH modem was found, but I didn’t find out how to configure it this way, because I have not used any provider or phone number for the ice.net D-50 mobile broadband CDMA modem (except as mentioned before) :
username:cdma
passworkd:cdma
Phone number: #777