Laggy mixer with Xonar DX snd_virtuoso

Laggy mixer with Xonar DX snd_virtuoso

[Flávio Martins]

Hello Alsa team,

I have a Xonar DX with a laggy volume control, you might have guessed already.
Sound will interrupt if the volume change is big like from 100% to
50%, it will only
skip a bit if the volume change is smaller. The interruptions/silence
last more than
5 seconds easily. I can actually see the mixer slider going up and
down on its own.

I am seeking for your help and i'm using 1.0.22.1.

Here goes the alsa-info.sh output, some weird things going on in dmesg
http://www.alsa-project.org/db/?f=ee911fe73baa60aac51c62ff787ab8b8bd8565e8

Flávio Martins

Re: Laggy mixer with Xonar DX snd_virtuoso

[Clemens Ladisch]

Flávio Martins wrote:
> I have a Xonar DX with a laggy volume control, you might have guessed already.
> Sound will interrupt if the volume change is big like from 100% to
> 50%, it will only
> skip a bit if the volume change is smaller. The interruptions/silence
> last more than
> 5 seconds easily. I can actually see the mixer slider going up and
> down on its own.

Does this also happen with alsamixer?

> Here goes the alsa-info.sh output, some weird things going on in dmesg
> http://www.alsa-project.org/db/?f=ee911fe73baa60aac51c62ff787ab8b8bd8565e8

The only message from the snd-virtuoso driver is at time 7.696764; some
are from a USB audio device and most from the onboard HDA device.


Regards,
Clemens
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Re: Laggy mixer with Xonar DX snd_virtuoso

[Flávio Martins]

2010/4/13 Clemens Ladisch <clemens@ladisch.de>:
> Flávio Martins wrote:
>> I have a Xonar DX with a laggy volume control, you might have guessed already.
>> Sound will interrupt if the volume change is big like from 100% to
>> 50%, it will only
>> skip a bit if the volume change is smaller. The interruptions/silence
>> last more than
>> 5 seconds easily. I can actually see the mixer slider going up and
>> down on its own.
>
> Does this also happen with alsamixer?

Controlling the volume with alsamixer works well, the sound does not break.
If i change the volume with the gnome-applet/pulseaudio i can see the sliders
in alsamixer getting affected by my changes with some stuttering and the sound
does break as described initially.

>
>> Here goes the alsa-info.sh output, some weird things going on in dmesg
>> http://www.alsa-project.org/db/?f=ee911fe73baa60aac51c62ff787ab8b8bd8565e8
>
> The only message from the snd-virtuoso driver is at time 7.696764; some
> are from a USB audio device and most from the onboard HDA device.
>

The onboard actually works well with the pulseaudio volume applet.
Sorry if it filled the log with crap, i use it for microphone input.

>
> Regards,
> Clemens
>

Regards,
Flávio

Re: Laggy mixer with Xonar DX snd_virtuoso

[Clemens Ladisch]

Flávio Martins wrote:
> 2010/4/13 Clemens Ladisch <clemens@ladisch.de>:
>> Flávio Martins wrote:
>>> I have a Xonar DX with a laggy volume control, you might have guessed already.
>>> Sound will interrupt if the volume change is big like from 100% to 50%, it will only
>>> skip a bit if the volume change is smaller. The interruptions/silence last more than
>>> 5 seconds easily. I can actually see the mixer slider going up and down on its own.
>>
>> Does this also happen with alsamixer?
> 
> Controlling the volume with alsamixer works well, the sound does not break.
> If i change the volume with the gnome-applet/pulseaudio i can see the sliders
> in alsamixer getting affected by my changes with some stuttering and the sound
> does break as described initially.

Volume changes on the Xonar D1/DX need several milliseconds and thus are
relatively slow, compared to most on-board sound cards.  However, there
are other sound cards that behave the same.

It looks as if the gnome-applet saves all mouse moves and tries to
execute the volume changes for all intermediate positions even if the
mouse has already moved to the final position.  Please file a bug with 
that mixer.


Regards,
Clemens
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