configure USB Modem with dingo(puppylinux 4.0)

[mohan34u]

I came across one situation to configure my USB Modem(Qualcomm CDMA Technologies MSM). I put this post to remember the configuration after sometime.

Checking for kernel detection:
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check whether your usb modem detected by kernel

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menu->system->hardinfo hardware configuration->devices->usb devices

(or)

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find /sys -type f -exec file {} \; | grep text$ | sed -e's/\(..*\): ..*/grep -i qualcomm \1 \&\& echo \1/g' | "$SHELL"

replace *qualcomm* with the name of your usb modem.

Load cdc-acm module:
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lsmod | grep -i cdc_acm && modprobe -r cdc_acm
modprobe cdc-acm

Create Interface Device in /dev:
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mknod /dev/ttyACM0 c 166 0

Create /etc/wvdial.conf file with the below content.

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[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = USB Modem
Baud = 460800
New PPPD = yes
Modem = /dev/ttyACM0
ISDN = 0
Phone = <isp phone number starting with #>
Username = <username>
Password = <password>
stupid mode = 1

Start `wvdial`:
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type `wvdial` to connect to the net.

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wvdial

Don't close the terminal where `wvdial` is running. open another terminal to do anything else.

Stop `wvdial`:
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press CTRL-C in the terminal where `wvdial` running. your ppp connection will be disconnected.

[TomM]

Mohanji,

Tried to connect to Reliance Net with Puppy 4.00 NOP using your approach. The phone is a popular LG RD2030 with a USB cable. HardInfo shows two USB devices: a USB mouse and an Ark UART USB to serial chip, probably embedded in the USB modem cable.

After running the lsmod and mknod commands the results were as follows:

--> WvDial: Internet dialer version 1.41
--> Cannot open /dev/ttyACM0: Invalid argument
sh-3.00# lsmod | grep -i cdc_acm && modprobe -r cdc_acm
cdc_acm 13984 0
usbcore 127128 8 cdc_acm,usblp,ark3116,usbserial,usbhid,usb_storage,uhci_hcd
sh-3.00# mknod /dev/ttyACM0 c 166 0
mknod: /dev/ttyACM0: File exists
sh-3.00# wvdial
--> WvDial: Internet dialer version 1.41
--> Cannot open /dev/ttyACM0: No such device or address
sh-3.00# lsmod | grep -i cdc_acm && modprobe -r cdc_acm
sh-3.00# lsmod | grep -i cdc_acm && modprobe -r cdc_acm
sh-3.00# mknod /dev/ttyACM0 c 166 0
mknod: /dev/ttyACM0: File exists

Sometimes the lsmod command gives a return and other times no return values are displayed. The mknod and WvDial commands always give the same errors. The ttyACM0 device appears in the /dev folder.

In XP the phone connects with the fussy Reliance driver. In NimbleX Linux the phone connects through kppp (/dev/tts/USB0) then immediately disconnects.

Any suggestions for implementing your approach would be appreciated.

[BarryK]

mohan34u,
I am very interested to know whether the cdc_acm module gets loaded automatically with Puppy 4.1alpha2.

It should load automatically if the modem is detected at bootup, also if you hotplug it after bootup.

If anyone else has a usb modem and can try this, please give it a go. If we can get the module to autoload then that's one of the steps solved.