Hi Linda, I finally did what you wrote. I got still a small sound. But what I now have again by unplugging the headset is that after a sleep I don't hear sound at all. I've to go to the sys soundprefs and select MUTE and deselect it. Then I've the sound back in the headset until the G5 awakes again. Paul Moortgat On 29 Nov 2006, at 19:20, Linda wrote: > On 11/29/06 12:15 AM, Paul Moortgat wrote: > >> I use a G5/2.5 and I just did a restart with the sound switched off. >> I also use a headset witch is also selected in the soundprefs. >> I didn't work. > > Unplug the headset. > > In Sound prefs: > > Sound Effects tab: Show volume in menu bar (checked). Checked Mute > button. > > Output tab: Digital Out > Optical digital out port. > > Input tab: Line in > Audio line-in port. > > I just tested, and this works on my G5 Dual 2GHz. No startup chime.