USB modem doesn't work after restart with SuSE Linux 7.0

Support knowledgebase (thallma_usb_modem_70)
Applies to

SuSE Linux: Version 7.0
This article refers to an older version of SuSE Linux. Therefore some of the informations given in this article may be outdated or the article may contain stale links.

Symptom:

The USB modem worked during installation, resp. configuration with YaST2, but not after the first reboot. In particular this problem is sometimes occuring with the Elsa 56k USB modem. If the YaST2 modem configuration is started again, whereas a new configuration isn't necessary, the USB modem is working again.

Cause:

After booting, the kernel module acm isn't loaded automatically. (But this module is loaded by the YaST2 modem configuration.) To use a USB-modem, the module acm is needed, besides the modules usbcore and either usb-uhci or usb-ohci.

Solution:

Load the acm module manually by executing the command
modprobe acm
as root. For not having to execute this command after every system start, put it either at the end of file /sbin/init.d/boot.local or (better way) add the module acm to the variable USB_DRIVERS that can be found in the file /etc/rc.config (e.g. USB_DRIVERS="usb-keyboard mouse acm").
Keywords: USB, MODEM

SDB-thallma_usb_modem_70, Copyright SuSE Linux AG, Nürnberg, Germany - Version: 10. Nov 2000
SuSE Linux AG - Last generated: 10. Nov 2000 by swiegra (sdb_gen 1.40.0)