[arch-general] Alsa Softvol and MOC

Sat Sep 26 13:55:12 UTC 2015

I believe performance impact is very noticeable, especially I believe it 
would also be a latency impact.

W dniu 26.09.2015 o 15:50, Christoph Gysin pisze:
> The performance impact is hardly an issue on any modern machine you
> will be running it.
>
> The main concerns are regarding security.
>
> http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/SystemWide/http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/WhatIsWrongWithSystemWide/
>
> On Sat, Sep 26, 2015 at 4:45 PM, Michał Zegan
> <webczat_200 at poczta.onet.pl> wrote:
>> It is not recommended for, I believe, a good reason, including severe
>> performance impact.
>>
>> W dniu 26.09.2015 o 15:39, Christoph Gysin pisze:
>>
>>> While it's generally not recommended, you *can* run pulseaudio also as
>>> a system-wide instance.
>>>
>>> On Sat, Sep 26, 2015 at 4:35 PM, Michał Zegan
>>> <webczat_200 at poczta.onet.pl> wrote:
>>>> this is very well known to me, and also quite logical. pulseaudio is a
>>>> session process, espeakup is a system process. that whole thing actually
>>>> means it will have exactly those problems.
>>>>
>>>> W dniu 26.09.2015 o 15:32, Storm Dragon pisze:
>>>>
>>>>> Howdy,
>>>>> No one has any clue what is stopping it. People have contacted the pulse
>>>>> developers who say it's something with espeakup, but then some think it
>>>>> may
>>>>> be speech-dispatcher's crappy pulse implimentation, which may be the
>>>>> case,
>>>>> cause I think it will work if a dekstop infironment isn't loaded with
>>>>> orca.
>>>>> No one has any clue how, or even what, to fix lol. So, I just avoid
>>>>> pulse.
>>>>> Thanks
>>>>> Storm
>>>>> On Sat, Sep 26, 2015 at 04:26:40PM +0300, Christoph Gysin wrote:
>>>>>> Alsa itself has a pulseaudio plugin. So applications using alsa will
>>>>>> be routed through pulseaudio.
>>>>>>
>>>>>> I tried to find the source for that plugin, but couldn't find it.
>>>>>> Maybe it was removed from alsa-plugins upstream? Or merged into
>>>>>> another plugin?
>>>>>>
>>>>>> What is preventing speakup from using pulseaudio?
>>>>>>
>>>>>> On Sat, Sep 26, 2015 at 4:09 PM, Storm Dragon
>>>>>> <stormdragon2976 at gmail.com>
>>>>>> wrote:
>>>>>>> Howdy,
>>>>>>> No, I don't have pulseaudio installed. I actually can't use it because
>>>>>>> it
>>>>>>> will not allow me to use speakup in the console. Interestingly enough,
>>>>>>> I
>>>>>>> read something that said moc doesn't have support for pulseaudio. So,
>>>>>>> I
>>>>>>> must
>>>>>>> have found outdated info.
>>>>>>> Still, I wonder if we are missing a plugin in alsa itself?
>>>>>>> thanks
>>>>>>> Storm
>>>>>>>
>>>>>>> On Sat, Sep 26, 2015 at 03:09:38PM +0300, Christoph Gysin wrote:
>>>>>>>>
>>>>>>>> Are you using pulseaudio? This works out of the box for me with
>>>>>>>> pulseaudio. moc controls the volume of whatever was the default sink
>>>>>>>> when it was started.
>>>>>>>>
>>>>>>>> On Fri, Sep 25, 2015 at 10:06 PM, Storm Dragon
>>>>>>>> <stormdragon2976 at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>> Howdy,
>>>>>>>>> I have installed extra/moc 1:2.5.0-3. Reading through the docs, and
>>>>>>>>> things
>>>>>>>>> on the net, I found a way to set up a softvol control for it in
>>>>>>>>> alsa,
>>>>>>>>> so
>>>>>>>>> when I adjust its volume, it only changes the volume for moc.
>>>>>>>>> Everything
>>>>>>>>> went well, except, I can't adjust the volume from within the moc
>>>>>>>>> app,
>>>>>>>>> which
>>>>>>>>> should be possible because you can set the alsa device and mixer in
>>>>>>>>> the
>>>>>>>>> ~/.moc/config file.
>>>>>>>>> It is using the right device, and amixer sset Mocmaster 50% sets the
>>>>>>>>> volume.
>>>>>>>>> It's just the in program controls that fail. When moc starts, it
>>>>>>>>> gives
>>>>>>>>> this
>>>>>>>>> error:
>>>>>>>>> ALSA lib dlmisc.c:254:(snd1_dlobj_cache_get) Cannot open shared
>>>>>>>>> library
>>>>>>>>> /usr/lib/alsa-lib/libasound_module_ctl_softvol.so
>>>>>>>>> This makes me think that either a plugin is missing from
>>>>>>>>> alsa-plugins,
>>>>>>>>> or
>>>>>>>>> maybe moc is using an outdated way to change its volume. However, if
>>>>>>>>> the
>>>>>>>>> alsa controls are set to their defaults, the volume works fine, but
>>>>>>>>> it
>>>>>>>>> lowers the volume on the whole system.
>>>>>>>>> I did a pacman search for alsa softvol but it didn't return
>>>>>>>>> anything.
>>>>>>>>> Is
>>>>>>>>> there anything I can install to fix this?
>>>>>>>>> Thanks for any help
>>>>>>>>> Storm
>>>>>>>>> --
>>>>>>>>> Powered by Arch Linux! I am registered Linux user number 508465:
>>>>>>>>> https://linuxcounter.net/user/508465.html
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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
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>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Powered by Arch Linux! I am registered Linux user number 508465:
>>>>>>> https://linuxcounter.net/user/508465.html
>>>>>>> My blog, Thoughts of a Dragon: http://www.stormdragon.tk/
>>>>>>> get my public PGP key: gpg --keyserver wwwkeys.pgp.net --recv-key
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>>>>>>
>>>>>>
>>>>>>
>>>>>> --
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>>>>>
>>>
>
>