On Thu, 2002-04-25 at 09:18, Will Aoki wrote: > On Thu, Apr 25, 2002 at 11:59:45AM +0100, Gareth Bowker wrote: > > Hi, > > I've got an iBook which every so often seems to go a bit haywire in > > the audio department. When I open the lid, so the machine comes out of > > suspend, most times everything's fine. Every once in a while, I'll get > > a load of static come out of the left speaker. Other times, it seems that > > the microphone comes on (afaict it doesn't work at other times :/) at full > > gain and gets into a feedback loop. In eith case the only option is a > > reboot. > > If you have the driver configured as a module, removing and reloading > dmasound_pmac might make the noise go away. For me, sometimes suspending > and resuming again will also make it go away. > > > Is this a problem with the audio drivers or is it more likely to be a > > hardware issue? > > The machine's a new (bought just before Christmas) 12.1" iBook with one of > > those horrible softmodems. > > It's been happening quite frequently as of late on my 1st generation > iBook2 - it tends to occur at least once a week (most recent was > Tuesday, in a library - gack!), although for me it's a rapid clicking > noise instead of static or a feedback whistle. (I suppose it could be > feedback with a 1/4 second time delay.) I've taken to carrying a stereo > plug to insert into the headphone jack when the clicks start, since the > driver turns off the speakers when something is connected to the jack. > > This comes up on the list once every few months. Last I heard the driver > maintainer was unable to reproduce it on his TiBook. It happens on my TiBook which is a first generation one. It only happens when I close the lid and keeps feeding back until I mute and unmute the audio. I suspect it is something to do with the mixer settings getting junked when the system goes into sleep. It could be a problem with esd also, as I am running that. Cheers... -- David Stanaway
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