[alsa-devel] uda1380 and pxa255 plays nothing but noise

Vasily Khoruzhick anarsoul at gmail.com
Tue Aug 7 23:18:30 CEST 2012

Maybe some amplifier is not enabled? On iPAQ h1940 and rx1950 you need to
toggle gpio pin to hear something from internal speaker (not sure if
that pin disables

Anyway, you can just mimic WinMobile behavior, use haret to see if there's some
GPIO activity. If you need to learn some haret magic - just ask me :)


On Tue, Aug 7, 2012 at 10:41 PM, nerwusek <luk0104 at gmail.com> wrote:
> On 07.08.2012 21:26, Mark Brown wrote:
>> Have you checked that the output isn't muted, has the audio routed to the
>> output you're using and has a suitable volume?
> Yes I have checked all that things. I have 2 routes from VOUTHP{LR} and from
> VOUT{LR} and I think it's ok because of info in logs "asoc: uda1380-hifi <->
> pxa2xx-i2s mapping ok".
> I have also observed that if I change Output Mux from DAC to Analog Mixer
> and change Anolog Mixer volume up the noise and louder.
> In my opinion problem is somewhere else. I think that I forgot to enable sth
> in ALSA. As I said when I enabled I2C debugging data flows only when
> playback is starting or when I change values in alsamixer, when music is
> played no data are send to codec.
> Łukasz Dałek
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