pressing the mute button writes 0 to /proc/acpi/ibm/volume. so in order to get the desired
behavior it would be necessary to read out the volume level from /proc/acpi/ibm/volume
before setting it to 0. save it somewhere and then if the users push the mute button again
write the saved value back.
i found out more about this "bug":
pressing the mute button writes 0 to /proc/acpi/ ibm/volume. so in order to get the desired ibm/volume
behavior it would be necessary to read out the volume level from /proc/acpi/
before setting it to 0. save it somewhere and then if the users push the mute button again
write the saved value back.