[pulseaudio-discuss] pulseaudio cannot recognise ALSA plughw

[Aleksander Kamenik]

Lennart Poettering wrote:
> On Mon, 19.01.09 21:38, Aleksander Kamenik (aleksander at krediidiinfo.ee) wrote:
> 
>> Lennart Poettering wrote:
>>
>>> This really looks like some ALSA issue. I fear they only way to figure
>>> out what is going on is using gdb and stepping through
>>> pa_alsa_set_hw_params(). Do you think you can do this?
>> I've player around with gdb in the past, though don't remember much. In 
>> the worst case I'll learn something :).
>>
>> IIRC with Fedora I have to get a -debug package of pulseaudio first to 
>> get the debug symbols? I can't find it though.
> 
> debuginfo-install pulseaudio
> LD_BIND_NOW=1 gdb /usr/bin/pulseaudio
> b pa_alsa_set_hw_params
> r
> 
> And then use "n" to step though the code to check which call in
> pa_alsa_set_hw_params() actually fails.
> 
> Lennart
> 

I'm not sure what I'm searching for.

Got this at some point:

E: alsa-util.c: snd_pcm_avail_update() returned a value that is 
exceptionally large: 5244504 bytes (29730 ms) Most likely this is an 
ALSA driver bug. Please report this issue to the PulseAudio developers.
N: module-alsa-sink.c: Increasing wakeup watermark to 40.00 ms


later:

N: module-alsa-source.c: Increasing wakeup watermark to 40.00 ms
N: module-alsa-source.c: Increasing wakeup watermark to 80.00 ms
N: module-alsa-source.c: Increasing wakeup watermark to 160.00 ms
N: module-alsa-source.c: Increasing wakeup watermark to 320.00 ms
N: module-alsa-source.c: Increasing wakeup watermark to 368.53 ms
E: alsa-util.c: snd_pcm_avail_update() returned a value that is 
exceptionally large: 12456236 bytes (70613 ms) Most likely this is an 
ALSA driver bug. Please report this issue to the PulseAudio developers.



I saw this quite a few times (the function is called several times). 
While stepping through output of this error:

http://pastebin.com/m408f914d

Is this it? If not, what am I searching for? In another part I've seen 
real-time event 62 too, if that means anything.

I currently have my integrated nvidia chip enabled too, so some of it 
may be from it too.

Regards,

-- 

Aleksander Kamenik
System Administrator
Krediidiinfo AS
an Experian Company
Phone: +372 665 9649
Email: aleksander at krediidiinfo.ee

http://www.krediidiinfo.ee/
http://www.experiangroup.com/