Adjust for Audacious drop-outs?
lubuntu at prpcompany.com
Thu May 21 17:58:03 UTC 2015
On 5/21/2015 1:24 PM, John Hupp wrote:
> On 5/21/2015 12:58 PM, Aere Greenway wrote:
>> On 05/21/2015 10:04 AM, John Hupp wrote:
>>> Running Audacious with JACK looks like it solves the dropout
>>> behavior (though I have not tested it on the fat clients yet), but I
>>> see that JACK and PulseAudio don't get along well together,
>>> especially on a machine with only one sound device:
>>> So for a general-purpose desktop it looks like it would be much
>>> better if I could get things working with PulseAudio.
>> I use VLC a fair amount, and I have not yet encountered the
>> up-to-minutes-long dropouts of the problem reported.
>> When I don't have JACK running, I use VLC.
>> I use Audacious a lot, practicing improvising music along with audio
>> files, and I use JACK because my music software needs the low-latency
>> it provides.
>> I installed PulseAudio on my machines because the Java configuration
>> for (all) Ubuntu (variants) presumes PulseAudio is present (for the
>> Java Sound (Gervill) synthesizer).
>> On low-spec machines, the Java Sound Synthesizer won't work, but on
>> those same machines, Qsynth (using JACK) works fine.
>> I just thought about something that may be helping me
>> (configuration-wise) that you probably don't have.
>> In the "/etc/security/limits.d" directory, I have a file named
>> "aere.conf" (my user name is aere). Its name and contents are
>> user-name dependent. In my case, its contents are:
>> aere - rtprio 85
>> aere - memlock unlimited
>> I created this file at the suggestion of the Fluidsynth developers,
>> to allow Fluidsynth (Qsynth) to work on low-spec machines, and when I
>> made this configuration change, it made a major positive difference.
>> I don't know if it has any affect on the Audacious audio drop-outs,
>> but is permanently in my system.
> The minutes-long dropouts only occur in VLC when it is run on a fat
> client. It's A-OK on a standalone.
> When I installed qjackctl, debconf popped up a question about whether
> I wanted to set up realtime priority (involving
> /etc/security/limits.d), but the help note said that it was a bad idea
> in a multi-user environment because jack could monopolize all
> available physical memory -- and a multi-user environment is what I
> have in this case.
> Concerning your note that you installed PulseAudio: I recall that it
> was not installed by default in earlier releases, but I think it is in
> 14.04 -- unless I picked it up as dependency for something else I
> Before I resort to one of the exercises to try to make JACK and
> PulseAudio coexist, I would like to continue trying to make PulseAudio
> work better. I return to the thought that VLC works fine on a
> standalone without JACK, presumably using PulseAudio, though I suppose
> it could be using ALSA directly. So I'm likewise hoping that
> Audacious + PulseAudio can work well for me on this hardware.
> But just going a step farther into the JACK + PulseAudio scenario, do
> you just run JACK manually as needed via qjackctl, or have you
> implemented one of the coexistence options outlined at
An interesting article here that offers tweaks:
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