[alsa-devel] Compute Stick baytrail audio problem

[Toyo Abe]

2016-02-23 23:34 GMT+09:00 Giacomo Comes <comes at naic.edu>:
> On Tue, Feb 23, 2016 at 12:32:23PM +0900, Toyo Abe wrote:
>>
>> Hi,
>>
>> I'd struggled a similar underrun problem on my baytrail device. The dmesg showed
>> the following warnings.
>>
>> [15356.757938] had: Driver detected 2 missed buffer done interrupt(s)!!!!
>> [15356.761594] had: Driver detected 1 missed buffer done interrupt(s)!!!!
>> [15356.774775] had: Unable to clear UNDERRUN bits
>> [15356.791312] had: Driver detected 1 missed buffer done interrupt(s)!!!!
>> [15356.808148] had: Unable to clear UNDERRUN bits
>> [15356.824692] had: Driver detected 2 missed buffer done interrupt(s)!!!!
>>
>> After some investigation, I found some problems on the driver and fixed a few of
>> them. I pushed the fix to my github. I hope it might help you.
>>   https://raw.githubusercontent.com/toyoabe/baytrailaudio/fix-underrun/hdmi_audio_20150319.patch
>>
>> Best Regards,
>> -toyo
>
> Hi,
> that was it!. I added your changes and now the audio works. I'm happy.
> I got finally every subsystem of the Compute Stick working.

Congratulations.

> I have a minor question tought. Alsamixer says:
>   This sound device does not have any controls.
> Is there a way to change the volume without enabling pulseaudio?
>

You could use softvol for that purpose.
　http://alsa.opensrc.org/Softvol

Regards,
-toyo