This note is for those using agrmodem.ko + agrserial.ko modules, which
includes those with the 11c11040 LSI/Agere chipset on High Definition
Audio card. Successive loading of agrmodem + agrserial dynamically
creates a port /dev/ttyAGS3 , which is not however used automatically
by the dialer setup utility wvdialconf.
The file below automates creation of a desirable symbolic link:
/dev/ttySAGR --> /dev/ttyAGS3
which will be found by wvdialconf.
Create a file /etc/modprobe.d/agrsm, which can be created with:
$ sudo gedit /etc/modprobe.d/agrsm
For users of RPM using distros, specifying some file in your
/etc/modprobe.d/ arena will be necessary instead.
But regardless the following lines should be copied/edited in. The
lines beginning with # are comments only.
Some lines may be undesirable folded in this email. The \ is a
legitimate ending of a line. The file
# # filename /etc/modprobe.d/agrsm or equivalent.
# setup agrsm modem with only: "sudo modprobe agrserial"
# with symbolic link creation: /dev/ttySAGR --> /dev/ttyAGR3
# so wvdialconf will detect /dev/ttySAGR
install agrserial /sbin/modprobe --ignore-install agrmodem ;
/sbin/modprobe --ignore-install agrserial && \
test -e /dev/ttySAGR || ln -s /dev/ttyAGS3 /dev/ttySAGR
# remove symbolic link upon agrserial unloading
remove agrserial /sbin/modprobe -r --ignore-remove agrserial ;
/sbin/modprobe -r --ignore-remove agrmodem && \
{ if test -L /dev/ttySAGR; then rm /dev/ttySAGR; fi } ; true
# agrserial could be additionally added to /etc/modules ,
# to automate bootup "sudo modprobe agrserial"
# But if autoloading should cause a bootup Crash on some System,
# recovery would require expert usage of a Rescue disk
## setup agrsm modem with only: "sudo modprobe agrmodem"
# install agrmodem /sbin/modprobe --ignore-install agrmodem && \
# /sbin/modprobe --ignore-install agrserial && test -e /dev/ttySAGR ||
ln -s /dev/ttyAGS3 /dev/ttySAGR
## However "sudo modprobe agrserial" is preferred to enable separate testing
## of effects of agrmodem and agrserial loading
### END file
With such a file present, both drivers are loaded with following
outputs to /var/log/messages:
$ sudo modprobe agrserial
* Hello Agere Driver **
ttyAGS3 at I/O 0x400 (irq = 3) is a AgereModem
Loading module Agere Modem Interface driver version 2.1.80.0 (2008-10-31)
With symbolic link created
$ ls -l /dev/ttySAGR
lrwxrwxrwx 1 root root 12 2008-12-31 12:35 /dev/ttySAGR -> /dev/ttyAGS3
Both drivers are removed by:
$ sudo modprobe -r agrserial
Unloading Agere Modem Interface driver: version 2.1.80.0
With removal of both drivers and the symbolic link
$ ls -l /dev/ttySAGR
ls: cannot access /dev/ttySAGR: No such file or directory
This functionality will presently be incorporated into a module
installer package.
MarvS
