LinuxMusicians

My old machine: Intel(R) Core(TM) i5-2500T CPU @ 2.30GHz Scarlett 2i2, 1st gen jackd -P90 -p512 -t2000 -dalsa -r48000 -p64 -n2 -Xseq -dhw:USB No xruns when playing Youtube videos in Firefox -> Pulseaudio -> jackd About 10% DSP load What do you use the bridge for? If Pulseaudio is installed then ALS...

Sure, jack_mixer is a nice jack application. Most non-music applicaions like Firefox use Pulseaudio. Having jack as my main sound system and configuring Pulseaudio to output to jack (with jack-sink) works perfectly on my machines. A buffer size of 64 with 48000 Hz is no problem. No xruns when playi...

No. The Scarletts Solo, 2i2 and 2i4 don't have a builtin mixer/volume that can be controlled by the computer. The 2i4 has 4 outputs so you could mute them with a software mixer, e.g. jack-mixer. Headphones can be assigned with a hardware switch to 1+2 or 3+4. Assign headphones to 1+2 and speakers t...

I don't have Scarlett Solo, but I am considering buying one. Can I mute monitor output and line output of Scarlett Solo independently in alsamixer? If I could, I could flip mute status of monitor output and line output in alsamixer so that only one of them is mute at any moment. This way, I can make...

I discovered that mpv has no problem with zita-a2j, but vivaldi sometimes produces pops. I suspect that vivaldi doesn't properly prioritize video and audio, but it is far easier for mpv to do so. Web browsers are not optimized for real-time video and audio. That's why web browsers send occasional po...

merlyn wrote:You could try making the desktop the master and the RPi the slave, then use alsa_out to connect to the DAC on the RPi.

The fact that web browsers don't support jack doesn't change even if I swap the master and the slave.
Web browsers should support JACK. Firefox abandoned JACK for years.

merlyn wrote:I use the ALSA JACK plugin.

https://alsa.opensrc.org/Jack_(plugin)

I didn't set it up myself -- it's an option in Cadence, the JACK frontend I use.

With that, my jack patchbay loses the ability to route the sound from ALSA.

Jack Winter wrote:Did you try the builtin clients instead of alsa_in/out? On JACK1 the -A parameter and on JACK2 the audioadapter client? No idea if they would work better, but maybe worth a try.

audioadapter is not better than alsa_in and alsa_out.

Just to get this straight: You start JACK on the RPi. The RPi is the master and takes input over the network from your desktop using netone . To use headphones on your desktop you need alsa_in . So clicks and pops through the speakers are nothing to do with alsa_in . Are the clicks and pops you ref...

merlyn wrote:@crocket One thing I noticed is that on your desktop you're using the 'audio' group but /etc/security/limits.d/40-realtime-base.conf refers to the 'realtime' group.

My user belongs to realtime group and audio group.

I tested zita-a2j and alsa_in for days. It seems that there are occasional pops from zita-a2j and alsa_in.

Is it really impossible to eliminate pops from zita-a2j and alsa_in when they get sound from ALSA loopback?

It doesn't say anything about ignoring self-disconnect requests. Neither it does. Is that a problem? It seems that I eliminated pops and crackles from alsa_in on ALSA loopback. But, I won't be totally sure until I have tested it for long enough. Refer to the configuration I wrote above. I updated it.

merlyn wrote:

crocket wrote:It doesn't say anything about ignoring self-disconnect requests.

Neither it does. Is that a problem?

Yes, firefox disconnects connections to itself and makes connections to system ports.
I saw it happen on qjackctl.

IIRC it's in jackd -h That should list all the options. ~> jackd -h jackdmp 1.9.12 ..... ..... Usage: jackdmp [ --no-realtime OR -r ] [ --realtime OR -R [ --realtime-priority OR -P priority ] ] ...... ...... [ --autoconnect OR -a <modechar>] where <modechar> is one of: ' ' - Don't restrict self con...

Wow. Thanks for sharing the process. I'm not at my desktop right now so I can't do a full reply. Now that you've sorted that you can fix Firefox. :) jackd has options to restrict self-connect requests. I think it's -e for ignore all. I don't see an option to restrict self-connect or self-disconnect...