I am new to Linux. I 've tried to install drivers for my Conexant FU07 USB modem but neither the Linuxant drivers nor the installer CD ones (dgcmodem_1.13_i386.deb) get properly installed.

The scanModem tool did not find much about the modem.

The lsusb output is:

Bus 002 Device 004: ID 0572:1340 Conexant Systems (Rockwell), Inc. 

The dpkg --list | grep --ignore-case dgc output is:

ii  dgcmodem:i386   1.13   i386   Conexant DGC USB modem driver

And relevant part of the dmesg output is:

[19432.393516] usb 2-1.3: new full-speed USB device number 4 using ehci-pci
[19432.522961] usb 2-1.3: New USB device found, idVendor=0572, idProduct=1340
[19432.522968] usb 2-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[19432.522972] usb 2-1.3: Product: USB Modem
[19432.522975] usb 2-1.3: Manufacturer: Conexant
[19432.522978] usb 2-1.3: SerialNumber: 12345678
[19432.544244] cdc_acm 2-1.3:1.0: ttyACM0: USB ACM device

How should I proceed?

  • Welcome to Ask Ubuntu! What's the output to dpkg --list | grep --ignore-case dgc? Please edit your question to provide this relevant infor there...
    – Fabby
    Jun 4 '18 at 23:03
  • 1
    It looks like the modem driver is installed correctly. Test it it minicom. The device is /dev/ttyACM0.
    – Pilot6
    Jun 5 '18 at 20:34
  • Minicom states: Port /dev/tty8. What do i do next?
    – A Z
    Jun 5 '18 at 21:03
  • @Pilot6 The modem is installed... OP's Q is answered. Shall you answer or I?
    – Fabby
    Jun 6 '18 at 7:38
  • @Fabby Answer please.
    – Pilot6
    Jun 6 '18 at 7:41

Your modem is now installed correctly as per:

dpkg --list | grep --ignore-case dgc output:

ii  dgcmodem:i386   1.13   i386   Conexant DGC USB modem driver

And relevant part of the dmesg output:

[19432.544244] cdc_acm 2-1.3:1.0: ttyACM0: USB ACM device

Have fun exploring modem and serial commands

  • How can I set it up to send and receive fax using a gui like Efax-gtk?
    – A Z
    Jun 7 '18 at 7:47
  • In Efax-gtk I get the following error: efax-0.9a: 13:14:16 Error: can't open serial port /dev/ttyACM0: Permission denied. Also in LibreOffice Writer's Print menu I don't get a Fax option. Only "my printer" and the "print to file" options. I appreciate your help and thank you for letting me know that the driver is installed. It seems that I need to do some more setting up. Could you please advise me how to proceed? Thanks
    – A Z
    Jun 7 '18 at 10:59
  • I 've been doing some reading on modem and serial port commands. Using the ls -l /dev/tty command I found that I don't have permission to that port (8 out of 9 ports are listed under root). Could somebody guide me to change the permission for that port? tty8 (or ttyACM0) is the port i need permission to.
    – A Z
    Jun 7 '18 at 13:27
  • Your original question has now been answered. Please don't forget to accept the answer by clicking the grey acceptance button turning it into a beautiful green. :-) Then ask a new question and refer with a link to this question if you would have a different question that relates to this one as this is not a forum but a Q&A site: one question, one answer. ;-)
    – Fabby
    Jun 7 '18 at 13:39

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