/srv/irclogs.ubuntu.com/2019/09/13/#ubuntustudio.txt

wonkoSo I just installed studio 19.04. I was running 18.04 that was vanilla ubuntu "upgraded" to studio with all the kxstudio junk. I'm trying to go more proper ubtuntu studio this time so I'm using Patchage and the studio controls, etc...15:50
wonkoMy previous setup was a mess, but it worked the way I wanted it to15:50
wonkomy current issues are I can't get my MIDI control surface to connecct to Ardour in Patchage15:50
wonkoand I'm curious as to what is the correct way to connect the mic from my webcam into jack15:51
wonkoI was doing this before: alsa_in -j WebCam -d hw:C920 -q 1 -r 32000 2>&1 1> /dev/null &15:51
wonkoand I'm curious if that's still a reasonable way to do things15:51
OvenWerksin ubuntustudio-controls...15:52
OvenWerksyou want both bridge check boxes checked15:52
wonkoThey are, yes15:52
OvenWerksyou should see your webcam mic in patchage already then15:53
OvenWerksyour midi control surface should show on the a2j ports15:53
wonkoI don't though. I have PulseIn, PulseOut, the two system ones, Ardour and the midi stuff15:54
OvenWerksAssuming jack is running of course15:54
wonkothe midi devices are there15:54
wonkoI just can't wire it to Ardour15:54
wonkoit never makes the link15:54
wonkohttps://imgur.com/KUr33gD.png15:55
wonkoThat's what it looks like now15:55
OvenWerkswhat does the controls look like?15:56
wonkohttps://imgur.com/ftz0GMu.png15:56
OvenWerkswow I didn't think we had changed controls so much since 19.0415:57
wonkonever used it before so no idea here. :)15:58
wonkoso the USB webcam shows up in the drop down for USB device that should be master, but I don't want that.15:58
OvenWerksno, that would be bad15:59
OvenWerksyou may want to add this PPA to keep the Studio specific apps up to date: https://code.launchpad.net/~ubuntustudio-ppa/+recipe/ubuntustudio-controls-backport15:59
OvenWerksWhy are you using 192000 sample rate?16:00
wonkoIs that needed for 19.04? The way I read the release notes that was only for 18.0416:00
wonkoit's what the mk2 supports. :)16:00
OvenWerks48k is as good as your ears ever get (well not that even)16:01
OvenWerks192000 uses 4 times as much disk space 4 times as much cpu and you get nothing in return16:01
mrz80*bingo* THAT was the packaage I forgot!  ubuntu-studio-controls !  Thanks for the reminder.  Just ditched my chromebook in favor of a backlevel Macbook Pro, much more of a going concern as a portable studio machine!16:02
wonkoI'll change that then I guess.16:02
OvenWerksyour webcam mic likely only supports 48k but may (if you are lucky) also support 44k116:02
wonkobut, I still need my MIDI and mic working. :)16:02
wonkoI think it only supports 32k16:02
wonkoit's going to be replaced with a proper mic hooked up to the komplete audio 616:03
wonkoso it's just a stop gap until I get to that16:03
OvenWerksmost usb mics at least support 48k because that is the MS standard16:03
wonkoHmm, I seem to remember having to run it at 32k for some reason16:04
wonkoanyway, that wouldn't affect it showing up in Patchage though, right?16:04
OvenWerksyes it would16:04
OvenWerksthe newer -controls from the backports PPA should be more forgiving16:05
wonkoStill doesn't show up though16:06
jubo2Hello. Would people recommend 18.04 or 19.04 ?16:06
OvenWerkswonko: could you in a terminal type: cat ~/.log/autojack.log |pastebinit16:07
OvenWerkswonko: and give me the url that pops up?16:07
wonkocat: /home/wonko/.log/autojack.log: No such file or directory16:07
OvenWerksin controls did you hit the start jack button?16:08
wonkomany, many, many times. :)16:09
OvenWerkswell I wouldf start by installing the newer -controls.16:11
wonkoone sec, doing that now16:11
wonko:)16:11
wonkoway more options. :)16:12
OvenWerksalso in a terminal type this all as one line:16:13
OvenWerkscd /tmp && wget http://jackaudio.org/downloads/adevices.sh && bash ./adevices.sh |pastebinit16:13
OvenWerksAnd pass me the url16:13
wonkoah ha, I get a2j devices in patchage now16:14
OvenWerkshow about your webcam mic16:14
wonkostill no webcam mic though16:14
wonkohttp://paste.ubuntu.com/p/SbWpDcBKt9/16:15
wonkothat's autjack.log16:15
wonkoCan't open ALSA capture device 'hw:C920,0,0'.16:15
wonkohttp://paste.ubuntu.com/p/y68cm888Zz/16:16
wonkothat's the script output16:16
OvenWerkstry: cat /proc/asound/C920/stream0 |pastebinit16:18
wonkohttp://paste.ubuntu.com/p/gPNtTdgn4k/16:20
OvenWerksOh my... ok I would try in a terminal: zita-a2j -d hw:C920,0,0 -r 32000 &16:22
OvenWerksDoes that error out or do you get sync messages?16:24
wonkothat gets me a zita-a2j device in patchage16:24
wonkoStarting synchronisation.16:24
OvenWerksThat is your mic16:24
wonkook, so that's all the current issues sorted, so thank you very much for that16:26
wonkonow I have more questions. :)16:26
OvenWerksIt appears controls was trying to start it at 1600016:26
wonkoa) can I get zita-a2j to start automatically with controls?16:26
wonkob) how do I save my Patchage wiring? Every time I restart jack it resets.16:26
wonkoor for b should I just use Carla?16:28
OvenWerkscarla works better I have heard.16:28
OvenWerksA) it should have just worked as is... I am not sure why it doesn't16:29
jubo2Ubuntu Studio.... do I want 18.04 or 19.04? Kubuntu 19.04 did not feel as stable as 18.04.316:29
OvenWerkswonko: does ubuntu-bug ubuntustudio-controls work? or does it say it is not in the repos?16:33
OvenWerksjubo2: how do you plan to install STudio? on top of kubuntu? or with the ubuntustudio iso?16:33
OvenWerkswonko: if it allows you to file a big please do. Title it "Web cam mic doesn't bridge"16:34
jubo2OvenWerks: Oh I can install it as a repo? Where are the instructions I kinda managed to mess up my Kubuntu setup and of course did not set Timeshift to make a backup before messing it up16:36
jubo2OvenWerks: I have 100GB free on disk and a separate /home partition, so I can install it alongside Kubuntu16:36
OvenWerksjubo2: install kubuntu first. add ppa: https://code.launchpad.net/~ubuntustudio-ppa/+recipe/ubuntustudio-controls-backport and then sudo atp install ubuntustudio-installer16:37
wonkoAlso, I realized I don't care about A as I'll be replacing that with a proper mic connected to the komplete audio. :)16:38
wonkoOvenWerks: No. cannot be reported, not an official ubuntu package16:39
wonkoalso, thanks so much for all your help16:39
OvenWerksI will try reporting it then. If you are still around once I get it in, you could click on this affects me too16:40
wonkoOk, Carla is *vastly* better than Patchage16:46
wonkobut I still can't get it to save all my routing changes16:46
wonkoif I restart jack it all goes back to default16:46
OvenWerkswonko: if you have a launchpad account you could hit the "This bug affects you" link: https://bugs.launchpad.net/ubuntustudio-controls/+bug/184392616:53
ubottuLaunchpad bug 1843926 in ubuntustudio-controls ""Web cam mic doesn't bridge"" [Undecided,New]16:53
OvenWerkswonko: so you need some sort of session manager16:54
wonkoYeah, I was using Claudia for that16:55
wonkobut I'm trying to avoid the KX stuff16:55
wonkoI added myself to affects me too16:56
OvenWerksThank you16:56
wonkono, thank *you*16:57
OvenWerksthe kxstudio stuff can interfere with controls16:57
OvenWerksin particular cadence16:57
wonkoyeah, I forget where but someone said to avoid it because of that16:58
OvenWerksI think Eickmeyer[m] has added raysession to the repos16:58
wonkoso that's the plan. :)16:58
OvenWerksbut raysession does not seem to be in our PPA so I am not sure if it will show up before 19.1016:59
wonkoI'm ok with getting it and manually installing it or even building it if I have to. Where would I find it?17:01
OvenWerkshttps://launchpad.net/ubuntu/+source/raysession17:04
wonkoI stumbled into that myself17:05
wonkogot the master branch17:05
wonkolet's get to building. :)17:05
OvenWerkshttps://code.launchpad.net/~ubuntustudio-dev/raysession/+git/raysession/+ref/master has the dl link17:05
OvenWerksit is definately set for 19.10, but should be in the backports for 19.04... Eickmeyer[m] why isn't it? or is it not released yet?17:06
wonkolrelease: could not exec '/usr/lib/qt5/bin/lrelease': No such file or directory17:09
wonkothoughts?17:09
wonkoI'm not sure what package I need for that17:09
OvenWerkshttps://git.launchpad.net/raysession/tree/debian/control17:12
OvenWerkslook at the build depends17:12
OvenWerkslines 6 to 1017:12
wonkooh i bet it's the qt4-liguistic-tools because I don't think I got that one17:12
wonkohmm, that didn't actually work. :(17:13
OvenWerksbest to ask Eickmeyer[m] when he is around as he is the packager17:14
wonkoOk, I'm not in a rush to solve this so I'll wait for him. :)17:15
OvenWerkswe have mentioned his nick enough times... I am sure he will say something when he is here.17:16
wonkoheh17:16
jubo2Searching for Ubuntu Studio repos, seems to bring up only a backports repo18:13
jubo2plus the pulseaudio bridge does not seem to be on by default in the 19.04 live image18:15
OvenWerksjubo2: most of the stuff for studio is in the main ubuntu repos18:16
* jubo2 wonders when the jackd2 could have multiple sound cards in the patchbay18:16
OvenWerksthere are just a few changes in ubuntustudio-installer and ubuntustudio-controls18:16
OvenWerksjubo2: it is unlikely that jackd will ever support more than one card at a time without extra progems like zita-aj bridge18:17
OvenWerksjackd is made for bit perfect, lowlatency audio. two audio cards with different clocks do not fit in that kind of opperation18:19
jubo2Oh ok, thanks OvenWerks18:20
OvenWerksubuntustudio specifically provides bridging extra audio devices into jack for use by jack18:20
jubo2OvenWerks: and I can install it to a Kubuntu?18:20
OvenWerksyes, I have done that here and it seems to work well. I am planning to do that here when the next LTS comes out.18:21
OvenWerks(20.04)18:22
jubo2Yeah, April of even years18:22
OvenWerksI install to many extra packages for development to switch every 6 months18:22
wonkoIf I hadn't of blown up my OS I would still be on 18.04. ;)18:26
jubo2I'm wondering if using used hardware is making sense for wellbeing18:28
jubo2but now is a bad time to buy, because Thunderbolt 3 models have just come out and cost tons18:29
jubo2Thunderbolt has power, daisychaining and 40Gbps bandwidth, so you can pop in displays and storage and whatnot18:30
wonkoThunderbolt is nice but it's a bit annoying that you can't just pop a thunderbolt card into a machine ago get thunderbolt. If your motherboard doesn't have the thunderbolt headers forget it. That's stupid. Not bitter or anything. :)18:32
jubo2I'm using laptops18:32
wonkoLess of an issue there because you have it or you don't. Can't really add it. 😁18:33
* OvenWerks uses an old delta66 PCI audio card... and has no wish to change18:36
wonkoI had some piece of junk usb soundblaster thing. Replaced it with this Komplete Audio 6 Mk2 and couldn't be happier.18:50
wonkoIt cost like 10x as much so it has to be better, right? :-D18:51
OvenWerksThe last three USB audio devices I bought were between $0.80 and $4.00, I think the delta was $500-ish back when I bought it. To buy any PCIe audio devices now are $1k-ish18:55
OvenWerksThe three cheap USB devices were for testing and development.19:05
wonkoOvenWerks: That's crazy town prices19:06
OvenWerksless than $1 is great when you don't care about the sound too much and just want to see how it connects.19:13
wonkoI was talking about the PCIe devices. :)19:15
OvenWerksThese have a single mic input and phones output (or computer speakers) all 1/8 jacks.19:15
OvenWerksWell with the PCIe devices, almost nobody makes them because the general semi-pro market is all USB19:15
OvenWerksso the ones I can find are not cheap.19:16
OvenWerksMost are made for the broadcast market19:16
OvenWerksThe recording market seems to be going dante... which is even more expensive19:17
wonkoI'm assuming they cram them full of inputs and outputs too?19:17
OvenWerksbetween 2 and 16 IO19:18
wonkoI'm guessing 16 would be shitty over usb no matter how good your devices is19:18
OvenWerkseven a two IO PCIe card tends to be over $50019:18
OvenWerksI have heard good things about the X32 with 32io and lots of USB devices are 18 - 24.19:19
OvenWerksUSB 2.0 can handle it just fine so long as the computer is built right and set up right.19:20
wonkohuh, interesting19:20
wonkoI would have expected usb to have latency issues19:20
OvenWerksthe USB devices do not go as low latency as the PCI devices do19:20
OvenWerksUSB minimum latency is determined by the USB clock at 1ms which means minimum 3ms.19:21
OvenWerkswith PCI I can get .7ms pretty easy19:21
OvenWerksanything less than 10ms is workable though19:21
OvenWerksIt depends on what you are using it for. Live use like computer as a synth or guitar effect needs low latency19:23
OvenWerksbut recording with a good daw can have a lot higher because the Daw compensates19:23
OvenWerks21ms for recording is no problem with proper monitoring19:25
OvenWerksBy the way, my reasoning behind using 48000 sample rate rather than higher can be summed up here: https://people.xiph.org/~xiphmont/demo/neil-young.html19:28
OvenWerksThis video: https://xiph.org/video/vid2.shtml19:29
OvenWerkswonko: this video ^^ is very good at showing (using analog measuring equipment) why a sample rate any higher than 48000 does not help and may be harmful.19:31
wonkoI'll definitely be giving that a read, thanks!19:31

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