[PlanetCCRMA] Pd + PulseAudio?

Peter Kirn peter at createdigitalmedia.net
Wed Mar 24 13:33:06 PDT 2010

Actually, Fernando, I can't get the hw:Intel thing to work.

In qjackctl, I type in hw:intel in the Interface field.

Tabbing out of that field immediately causes it to rewrite as
hw:intel. (lowercase)

Really, truly. Is there a GNOME setting somewhere that turns off some
sort of auto-correct? Or perhaps can I wipe the qjackctl settings and
try it again?

This is on 0.3.5.


On Wed, Mar 24, 2010 at 4:27 PM, Fernando Lopez-Lezcano
<nando at ccrma.stanford.edu> wrote:
> On Wed, 2010-03-24 at 11:49 -0700, Niels Mayer wrote:
>> On Tue, Mar 23, 2010 at 8:26 PM, Peter Kirn
>> <peter at createdigitalmedia.net> wrote:
>>         Looking at AlsaMixer as you suggest, I definitely see the HDA
>>         Intel
>>         card. Master and PCM have volume levels; Headphone and Speaker
>>         show up
>>         but do not have mixer values.
>> ...
>>         "control open "hw:intel" (No such device)
>>         Cannot initialize driver"
>> Hunches:
>> Something is unexpectedly grabbing your hw:intel controls.
> Nope. That was just a typo ("intel" instead of "Intel"), there's nothing
> magical going on here.
>> Consider that X/Gdm launch pulseaudio, so you can have those cute
>> noises when you mistype your password; it will therefore grab the
>> hw:intel controls. By totally removing pulseaudio, this can't happen,
>> ever.
> If you launch jack and use jack you won't have any problems either
> (provided you use a jack that negotiates with pulseaudio). If you are
> using jack aware programs I don't see any reason to not use jack. In
> that case pulseaudio will relinquish and not use the soundcard that jack
> is acquiring. Period.
> If you deliberately want to send non-jack stuff to jack, that only can
> be accessed through pulseaudio streams you can load the jack sink
> pulseaudio plugin and direct your pulseaudio streams there. I almost did
> that by default in my jackd wrapper script for fc11 but I ended up
> deciding the user should control that explicitly (when that option was
> enabled I was able to start Jack and existing pulse audio streams would
> keep playing through jack after it finished starting up!).
> -- Fernando
>> Consider also that these intel cards often include a semi-shared HDMI
>> audio portion e.g.
>> ##  1 [SB             ]: HDA-Intel - HDA ATI SB
>> ##                       HDA ATI SB at 0xfb7f4000 irq 16
>> ##  2 [HDMI           ]: HDA-Intel - HDA ATI HDMI
>> ##                       HDA ATI HDMI at 0xfb9fc000 irq 19
>> Perhaps also consider disabling the HDMI portion to prevent
>> interference from that (as well as not loading extra drivers that
>> you're not using).
>> (from /etc/modprobe/*.conf: )
>> alias snd-card-1 snd-hda-intel
>> options snd-hda-intel index=1,2 enable=1,0
>> As a half-step towards preventing problems, you can also even w/ pulse
>> running, disable all system sounds and all error warning sounds. That
>> causes a whole class of sound system lockups in and of itself.
>> However, once you've gone that far, you might as well go all the way
>> and follow my original
>> suggestion: http://old.nabble.com/uninstall-pulseaudio-to-increase-audio-app-stability-across-updates-%28was-Re%3A-yum-update%29-tp27759501p27759501.html
>> -- Niels
>> http://nielsmayer.com
>> _______________________________________________

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