On Wed, 2011-03-23 at 02:49 -0400, Marvin Stodolsky wrote:
> Aliet,
>
> Even for Open Source drivers, function loss during Suspend/Hibernation
> is common.
> But the "wake up scripts" check for critical functionalities
> (including COMM) and
> quietly do unloads/reloads as necessary.
>
> You could set up such a script, following study of the several Resume
> relate scripts.
> I haven't bothered with such myself.
>
> MarvS
>
Hi there,
following Marvin advice, I set up such a script for unloading/loading
the modules before and after every suspend/hibernate, I give the
solution here:
This is tested in Ubuntu Lucid Lynx 10.04.1 LTS, which uses 'pm-utils'
to suspend and hibernate, as seen in the file:
'/etc/default/acpi-support'
---------------------------------------------------------------------
$ cat /etc/default/acpi-support | grep ^SUSPEND_METHODS=
SUSPEND_METHODS="dbus-pm dbus-hal pm-utils"
---------------------------------------------------------------------
To take care of the loading/unloading process, we create a script file
in '/etc/pm/sleep.d/' with name:
'90_unloading-loading-agrmodem-kernel-modules'
---------------------------------------------------------------------
$ sudo nano /etc/pm/sleep.d/90_unloading-loading-agrmodem-kernel-modules
---------------------------------------------------------------------
Once inside we paste there the following:
---------------------------------------------------------------------
#!/bin/bash
case "$1" in
hibernate|suspend)
modprobe -r agrserial && modprobe -r agrmodem
;;
thaw|resume)
modprobe agrmodem && modprobe agrserial
;;
*)
;;
esac
exit $?
---------------------------------------------------------------------
After we save the script, we set the permissions:
---------------------------------------------------------------------
$ sudo chmod 755 /etc/pm/sleep.d/90_unloading-loading-agrmodem-kernel-modules
---------------------------------------------------------------------
Everything should look like this:
---------------------------------------------------------------------
$ ls -l /etc/pm/sleep.d/90_unloading-loading-agrmodem-kernel-modules
-rwxr-xr-x 1 root root 220 2011-03-23 11:37 /etc/pm/sleep.d/90_unloading-loading-agrmodem-kernel-modules
---------------------------------------------------------------------
You still have to load the modules on a normal boot-up, which I do by adding:
---------------------------------------------------------------------
agrmodem
agrserial
---------------------------------------------------------------------
at the end of '/etc/modules'
in my case it look like this:
---------------------------------------------------------------------
$ cat /etc/modules
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
lp
coretemp
it87
agrmodem
agrserial
---------------------------------------------------------------------
and for automating the process of creating the symlinks, following
'agrsm_howto.txt', adding this line:
---------------------------------------------------------------------
KERNEL=="ttyAGS3", NAME="%k", GROUP=="dialout", SYMLINK+="ttySAGR modem"
---------------------------------------------------------------------
at the end of:
---------------------------------------------------------------------
/etc/udev/rules.d/10-local.rules
---------------------------------------------------------------------
or creating it if doesn't exists, both could be done by:
---------------------------------------------------------------------
$ echo 'KERNEL=="ttyAGS3", NAME="%k", GROUP=="dialout", SYMLINK+="ttySAGR modem"' | sudo tee --append /etc/udev/rules.d/10-local.rules
---------------------------------------------------------------------
and it should look like this:
---------------------------------------------------------------------
$ grep "ttyAGS3" /etc/udev/rules.d/10-local.rules
KERNEL=="ttyAGS3", NAME="%k", GROUP=="dialout", SYMLINK+="ttySAGR modem"
---------------------------------------------------------------------
I hope someone can find use in this workaround for Agere Modem
drivers ;)
Regards,
Aliet
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