Comment 56 for bug 30963

Hypothetical basis above

1.After the iBookG3 booting, Connecting the headphoneplug to the headphone terminal.
2.Verifying that sound has come out of the headphone
3.Open "Volume Control Appletl" on the menu bar and select Switch tab.
4."Headphone checkbox" has become effective.
5.When the headphone is removed, sound comes out of the internal speaker.
6.Open "Volume Control Appletl" on the menu bar and select Switch tab.
7."PC Sperker" has become effective and "Headphone checkbox" has become null.
8.Until it shuts down, sound has come out.
9.After restart sound stops coming out, I work similarly in order to put out sound.

This phenomenon is reported with also the ubuntu Japanese mailing list.