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

Vasily Khoruzhick anarsoul at gmail.com
Wed Aug 8 08:26:31 CEST 2012

On Wed, Aug 8, 2012 at 12:48 AM, nerwusek <luk0104 at gmail.com> wrote:
> On 07.08.2012 23:18, Vasily Khoruzhick wrote:
>> 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
>> headphones).
> When I change volume of Analog Mixer the noise in headphones is
> getting stronger or weaker so GPIOs in my opinion are set up correctly.
> I'll enable debug messages on i2s bus and see if there is sth
> sent to codec. Maybe alsa is sending music packets to /dev/null.
> I will also want to see what debugfs files should contain when audio works.
> Could you send me few examples or point me to address with them?

Well, I've no compiled kernel nor rootfs for my PDAs :( and I'll be
pretty busy this weekend,
so it'll take some time to get debugfs contents for you.


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