[GTA02] headphone socket issues

[Davide Scaini]

On Wed, Mar 24, 2010 at 12:02 PM, Tiago Bortoletto Vaz <tiago at debian.org>wrote:

> Hi,
>
> On Wed, Mar 24, 2010 at 12:28:53PM +0800, Paul Wise wrote:
> > On Wed, 2010-03-24 at 03:08 +0300, Paul Fertser wrote:
> >
> > > Hey, this looks very much like you used an ordinary 2.5<->3.5mm plug
> > > converter which doesn't work due to wrong pinout. Just use correct
> > > wiring for the converter (check the wiki), it should work out of the
> > > box.
> >
> > I did use a plug converter in this case. Which wiki page can I find the
> > correct converter wiring information on? I guess I'll need to butcher
> > the current converter and rewire it?
> >
> > Earlier I used Nokia headphones with a 2.5mm plug and had the same
> > one-bud sound issue. At that time I hadn't yet figured out the
> > workaround of pulling it out a little bit, I'll test that later today.
>
> That ugly workaround has been working for me, although it's far from being
> a
> good solution. I guess the problem is the output has L + R + Mic, while
> standard headphones (and adapters) have only L + R. So, you have to figure
> out
> the position where L + R meets L + R. Btw, it's just my newbie theory for
> this
> issue.
>
> Regards,
>
>
exactly.
unplug a little bit makes only the inner contact to contact both l+r slices
on your plug... so no stereo sound.
You have to find the reference on openmoko wiki on how the plug is built.
regards
d



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