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Old 12-16-2008, 11:36 AM   #1
dgoddard
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Registered: Jan 2007
Posts: 69

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Dell 1535 + Ubundu + Modem = disaster


Trying to activate a USB modem on my computer (see steps below) disables sound in all applications and all wireless communication and it appears may be responsible for disabling portions of other applications.

Unfortunately I must have the modem capability where I do most of my computer work and the computer has no built in modem.

Support from Dell "Linux Support" has been less than useless. I am not all that advanced in Linux as yet so it does not take much jargon to confuse me.

#######################

Documentation for a similar but different modem/sound/wireless "Dell problem" is found at:

http://linux.dell.com/wiki/index.php..._Does_Not_Work
http://linux.dell.com/wiki/index.php...Kernel_Upgrade

& known issues list at bottom of:
http://linux.dell.com/wiki/index.php/Ubuntu_8.04

########################

System Specifications:


Computer:........ Dell Studio 1535 laptop
Modem ........... USRobotics usr5837
OS............... Ubuntu 8.04 (hardy heron)
-- Kernel ....... 2.6.24-16 generic
-- Gnome ........ 2.22.1
Processor 0: .... Intel Core 2 Duo CPU T5750 @ 2.00GHz
Processor 1: .... Intel Core 2 Duo CPU T5750 @ 2.00GHz

##########################

USRobotics Modem Information


The modem which is touted as Plug and Play does not work until steps 1-4 of the troubleshooting routine provided by USRobotics are executed.
Then the modem works but the Sound, wireless etc. won't work.

--------- USRobotics Trouble shoot instructions --------

Open a terminal shell and log in as root.

1. Verify modem enumeration with the following command:

lsusb

Below is an example output.

Bus 001 Device 002: ID 0baf:0303 U.S. Robotics

2. Verify the CDC ACM module as loaded with the following command:

lsmod

If the version of Linux kernel has the CDC ACM driver compiled into it, you
should now be able to use a terminal emulator program (for example: minicom)
to attach to the modem.

If the kernel has the CDC ACM driver built as a module, then you may have to
enable the driver with the following command:

modprobe acm
(used in 2.4.x kernels)

modprobe cdc_acm
(used in 2.6.x kernels)

3. Verify device node creation.

Some distributions will automatically create a device node
for the modem in /dev. Below is the device node as created in Fedora 7.

crw-rw---- 1 root uucp 166, 0 2007-09-12 10:33 ttyACM0

The CDC ACM driver allows up to 32 modems. If the device node does not exist,
create one using the following command:

mknod /dev/ttyACM0 c 166 0

Additional device nodes can be created for additional modems as follows:

mknod /dev/ttyACM1 c 166 1
mknod /dev/ttyACM2 c 166 2
mknod /dev/ttyACM3 c 166 3

4. Access the modem.

Use a terminal emulator program (for example: minicom) to access the modem using
the device node created above. For example, setup the serial port for minicom to
use the device node /dev/ttyACM0.

5. Internet dialers.

Applications such as WvDial and KPPP may require access to the modem via the
/dev/modem device node.

You can set up a symbolic link from /dev/modem to the ACM modem device by using
the following command:

ln -s /dev/ttyACM0 /dev/modem
 
Old 12-16-2008, 12:41 PM   #2
David1357
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Registered: Aug 2007
Location: South Carolina, U.S.A.
Distribution: Ubuntu, Fedora Core, Red Hat, SUSE, Gentoo, DSL, coLinux, uClinux
Posts: 1,302
Blog Entries: 1

Rep: Reputation: 107Reputation: 107
Quote:
Originally Posted by dgoddard View Post
Unfortunately I must have the modem capability where I do most of my computer work and the computer has no built in modem.
The output of "dmesg" or the contents of "/var/log/messages" starting from the beginning of your most recent boot (a couple of lines above the line that has "Linux version 2.6" in it) would be helpful here.

Also, the output of "lspci", "lspci -n", "lsusb", and "lsmod" might help.
 
Old 12-16-2008, 11:56 PM   #3
silenceGL
DLteam
 
Registered: Dec 2008
Location: Germany
Distribution: Dreamlinux, Lenny, LFS
Posts: 11

Rep: Reputation: 0
Hi,
I am not pleased to say this, but Dreamlinux is not a Ubuntu derivative. It consists of his own kernel, set of tools etc. It is most likely you will find confidental information in Ubuntu-section.... but you might try your modem using DL as well (do not forget to post back, then )
@nno
 
Old 12-19-2008, 02:21 AM   #4
SgDreamer
DLteam
 
Registered: Dec 2008
Distribution: Dreamlinux 3.5rc4
Posts: 36

Rep: Reputation: 15
Quote:
Originally Posted by dgoddard View Post
Trying to activate a USB modem on my computer (see steps below) disables sound in all applications and all wireless communication and it appears may be responsible for disabling portions of other applications.

Unfortunately I must have the modem capability where I do most of my computer work and the computer has no built in modem.

Support from Dell "Linux Support" has been less than useless. I am not all that advanced in Linux as yet so it does not take much jargon to confuse me.


Hi guys.

@dgoddard:
As silenceGL said, we do have modem support and a PPoE Wizard to ease the process.
You're welcome to try Dreamlinux.
We'll help you as much as can.
 
  


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