| Azelphur | Hi, I'm trying to follow the instructions on this page https://help.ubuntu.com/community/HowToJACKConfiguration I installed the ubuntustudio-audio package and am now trying to run qjackctl, but it just freezes on startup. :( | 02:29 |
|---|---|---|
| holstein | Azelphur: i would either check for JACK running, or kill it, or reboot if you are not sure | 02:29 |
| Azelphur | holstein: apparently I have jackdbus running, and I only just rebooted after installing that package :p | 02:30 |
| holstein | Azelphur: i would open a terminal and type gksudo qjackctl | 02:30 |
| holstein | when you can get jack runing stable as root, then you can move on to "as normal user" | 02:30 |
| Azelphur | woo that got it to start | 02:30 |
| holstein | maybe you need to add your user to the audio group | 02:30 |
| holstein | then, start somehting like xynadd or yoshimi and try making a noise | 02:31 |
| holstein | i'll be back in a second | 02:31 |
| Azelphur | jack won't start because it says pulseaudio and jackdbus have control over my playback device. :( | 02:32 |
| Azelphur | I heard someone say you could configure pulseaudio to run via jack, essentially a "everything just works" setup \o/ | 02:32 |
| holstein | Azelphur: i dont use pulse and JACK | 02:33 |
| Azelphur | I really need both, being able to play some music is fun but not being able to answer the phone kinda essential :P | 02:34 |
| holstein | Azelphur: you can | 02:37 |
| ailo | Azelphur: That guide is a bit old | 02:37 |
| holstein | i just dont | 02:37 |
| holstein | Azelphur: i would getJACK running stable first | 02:37 |
| Azelphur | ok do you have any better documentation I could follow? | 02:37 |
| Azelphur | I imagine I need to stop pulseaudio from starting, because it auto restarts itself usually | 02:38 |
| ailo | Azelphur: Make sure you killed jack, and pulseaudio before proceeding. "killall -9 jackdbus" "killall pulseaudio" (pulseaudio will respawn | 02:38 |
| ailo | Azelphur: No need | 02:38 |
| Azelphur | ok | 02:38 |
| Azelphur | done that | 02:38 |
| ailo | Azelphur: Just make sure no applications are using PA, like a browser | 02:39 |
| ailo | Azelphur: If you haven't set up realtime privilege, you won't be able to start jack in realtime mode | 02:39 |
| ailo | Azelphur: Not on Ubuntu Studio? | 02:40 |
| Azelphur | I believe I did that, when I installed the ubuntustudio-audio package it asked me if I wanted realtime and I said yes, I then added myself to the audio group | 02:40 |
| Azelphur | on Xubuntu 12.04 | 02:40 |
| ailo | Azelphur: On Debian, that would be enough, cause the user is already member of audio group, but not on Ubuntu | 02:40 |
| ailo | The package is imported directly from Debian | 02:40 |
| Azelphur | I added myself to the audio group though :P | 02:41 |
| ailo | Azelphur: Did you logout, and login? | 02:41 |
| Azelphur | yup | 02:41 |
| ailo | Ok, so then you should be fine | 02:41 |
| ailo | Try starting jack again | 02:41 |
| ailo | Azelphur: No luck? | 02:42 |
| Azelphur | nope, takes a long time to check as it hangs | 02:43 |
| ailo | Azelphur: Kill jackdbus again with "killall -9 jackdbus" | 02:43 |
| Azelphur | https://dl.dropbox.com/u/3832397/screenshots/2012/August/2012-09-05-034320_858x677_scrot.png | 02:43 |
| Azelphur | done | 02:44 |
| ailo | Azelphur: In a terminal, do: pasuspend -- jackd -d alsa | 02:44 |
| ailo | Azelphur: Sorry: pasuspender -- jackd -d alsa | 02:45 |
| Azelphur | I don't appear to have pasuspend | 02:45 |
| Azelphur | ah :P | 02:45 |
| Azelphur | it looks like that worked | 02:45 |
| ailo | Azelphur: Ok, so jackdbus is not getting a hold of your card, because of PA | 02:45 |
| Azelphur | fun | 02:45 |
| ailo | Azelphur: There are two ways to get around that. If you never want PA running alongside jack, use "pasuspender --" before opening whatever jack control program you use, like qjackctl | 02:46 |
| ailo | If you want to make your own starter, use alacarte | 02:46 |
| ailo | You can start it from the terminal | 02:47 |
| ailo | If you instead want PA to connect to jack, install pulseaudio-module-jack | 02:47 |
| Azelphur | Option B sounds like the one for me, *installs* | 02:47 |
| ailo | And make sure to restart pulseaudio, before trying that | 02:47 |
| Azelphur | apparently I already have that package | 02:47 |
| ailo | ok.. | 02:48 |
| Azelphur | so what do I do to make pulseaudio connect to jack? | 02:49 |
| ailo | Azelphur: When starting jackdbus (which is how qjackctl is set up by default), PA will create sinks for jack automatically | 02:50 |
| ailo | It's important that PA is not using the card for anything, when you start jack | 02:50 |
| ailo | Azelphur: I'd start a new session, and try again | 02:50 |
| Azelphur | ok | 02:50 |
| ailo | This is Ubuntu 12.04, right? | 02:50 |
| Azelphur | I'll jump on IRC on my tablet, my irc client makes sounds :p | 02:50 |
| ailo | Or, Xubuntu, as you said | 02:50 |
| Azelphur | Xubuntu 12.04, yes | 02:50 |
| ailo | That could be the problem | 02:51 |
| Azelphur | The xubuntu or the Irc client? | 02:51 |
| ailo | The irc client | 02:52 |
| Azelphur | Doing a full reboot on my PC too just to be sure | 02:52 |
| Azelphur | :) | 02:52 |
| Azelphur | Ailo fresh boot, it still doesn't start | 02:57 |
| Azelphur | Doesn't work as root either :( | 03:00 |
| ailo | Azelphur: I don't think using root is helpful at this moment | 03:01 |
| ailo | It's mostly helpful to determine whether you have realtime privilege | 03:02 |
| Azelphur | Ok | 03:02 |
| ailo | Azelphur: Since you were able to start jackd with pasuspender, that means PA is in the way when you're starting normally | 03:02 |
| Azelphur | Makes sense | 03:03 |
| ailo | Azelphur: From the error log, I see that it is in fact jackdbus you are starting, which is what we want | 03:03 |
| Azelphur | Perhaps some application that starts at boot is connecting to pulse audio? | 03:03 |
| ailo | Azelphur: Default settings on qjackctl should just work | 03:03 |
| ailo | Azelphur: Have you added any custom auto start apps? | 03:03 |
| Azelphur | Not that I know pf | 03:04 |
| Azelphur | Of* | 03:04 |
| ailo | It's a bit mysterious then | 03:04 |
| ailo | Azelphur: One way to test your machine would be to make a live media of Ubuntu Studio, and try it. Everything is set up, so all you need to do is boot the live session and try starting jack | 03:05 |
| Azelphur | I started up pavucontrol and in the playback tab where it lists connected applications it lists "system sounds" | 03:05 |
| ailo | Yeah? | 03:05 |
| ailo | That should only be connected when you're actually using system sounds | 03:05 |
| Azelphur | It is in the list at all times | 03:06 |
| ailo | I mean, everytime there's a system sound, it connects only for that time | 03:06 |
| ailo | Azelphur: The would explain it though | 03:06 |
| Azelphur | Indeed | 03:06 |
| Azelphur | Any idea what service does that? I could kill it | 03:07 |
| len-dt | And it doesn't block things if it is going thrugh pulse. | 03:07 |
| ailo | len-dt: As long as pulse is being used for something, jackdbus won't start | 03:07 |
| Azelphur | I'm also downloading Ubuntu studio | 03:07 |
| ailo | len-dt: Meaning, if any app is connected to PA, jackdbus won't be able to grab that device | 03:07 |
| len-dt | Your experience and mine are different then | 03:08 |
| ailo | len-dt: It's different if you're starting jackdbus with another debice | 03:08 |
| ailo | device* | 03:08 |
| Azelphur | I'm also using a USB headset if that effects anything *shrug* | 03:09 |
| len-dt | I have had audacious playing an MP3 on the d66 and start jackdbus with qjackctl and the sound from pulse stops and jack starts | 03:09 |
| ailo | Azelphur: Oh, I forgot to ask you which device you were trying to start jack with | 03:09 |
| Azelphur | No idea, I just started qjackctl then hit start | 03:09 |
| ailo | Azelphur: You need to choose the right device in Qjackctl -> Setup -> Interface | 03:10 |
| len-dt | internal sound then | 03:10 |
| ailo | len-dt: Could be this works a bit differently between releases. PA does not let go of the device for me at this moment, anyway. | 03:11 |
| ailo | Also using M66 | 03:11 |
| Azelphur | Interface options are: (default), hw:0, plughw:0, /dev/audio, /dev/dsp | 03:12 |
| Azelphur | What should I set it to? | 03:12 |
| ailo | Azelphur: That's not the right menu. Use the arrow next to it, pointing left | 03:12 |
| Azelphur | Ah, setting it to hw:5 Logitech G930 headset | 03:13 |
| Azelphur | It started! | 03:14 |
| Azelphur | Yay :D | 03:14 |
| ailo | Azelphur: What was hw:1 set to? | 03:14 |
| ailo | I mean, hw:0? | 03:14 |
| Azelphur | HDA Intel | 03:14 |
| ailo | Strange. That's your internal card | 03:14 |
| ailo | Should work | 03:14 |
| Azelphur | I have HDA NVidia too | 03:15 |
| ailo | Anyway, sounds like you are on top of it now | 03:15 |
| ailo | Azelphur: That's your hdmi out | 03:15 |
| Azelphur | Also hw:0,0 is ACL892 Analogue | 03:15 |
| Azelphur | OK, yep progress :) | 03:15 |
| ailo | Azelphur: https://help.ubuntu.com/community/UbuntuStudio/ProAudioIntro/1204 | 03:16 |
| ailo | Just a bit of info on the sound systems | 03:16 |
| Azelphur | Seems like audio isn't working now, at least the pulse side isnt | 03:17 |
| ailo | Azelphur: Open the PA mixer | 03:17 |
| ailo | Azelphur: Oh, and check Qjackctl -> Connect | 03:17 |
| ailo | You should see PA there | 03:17 |
| ailo | You still need to set PA to use jack as output, if you want it to send audio to jack | 03:18 |
| Azelphur | Yep I see pa in there | 03:18 |
| Azelphur | Ah, how do I do that? | 03:18 |
| ailo | Azelphur: In the PA mixer | 03:19 |
| ailo | After starting jack, jack will appear as an output device for PA | 03:19 |
| Azelphur | Oh that was easy | 03:19 |
| Azelphur | Yep got sound via pa through the jack sink :D | 03:20 |
| ailo | Azelphur: using PA with jack will reduce the ability to get stable performance at really low latencies. Something I would believe is hard to get anyway with certain devices | 03:21 |
| ailo | Azelphur: That's mostly important only if you're planning on playing live on soft instruments | 03:21 |
| Azelphur | You mean if I use an app that goes pa > jack | 03:21 |
| Azelphur | Or even if the app connects direct to jack | 03:22 |
| ailo | Azelphur: It's really pulseaudio-module-jack that does that, and using jackdbus | 03:22 |
| ailo | The sinks are always created, even if you don't use them | 03:22 |
| Azelphur | I use a midi piano | 03:23 |
| Azelphur | Up until now I've been suffering with pulse audio latency haha | 03:24 |
| ailo | Azelphur: To get lower latency, set Qjackctl -> Setup -> frames/period lower | 03:24 |
| Azelphur | Hopefully this will be an improvement | 03:24 |
| ailo | Azelphur: You can get latencies as low as 1ms on some systems | 03:24 |
| ailo | I prefer 64, but 128 is often enough | 03:25 |
| Azelphur | That's better than pa by far, the longer pa runs the more latency creeps in, I've had it up at 100+ms haha | 03:25 |
| ailo | 64 frames/period that is. The latency should be well under 10ms | 03:26 |
| Azelphur | What's the downside to setting it lower, more CPU usage? | 03:26 |
| holstein | breakage.. crashing... clicks.. pops | 03:26 |
| ailo | Azelphur: The lower you set it, the less CPU cycles jack will had to deliver the audio to and from your device | 03:26 |
| Azelphur | Ah | 03:26 |
| ailo | Azelphur: You could try something simple, like Hexter | 03:28 |
| ailo | Azelphur: Make the midi connections in Qjackctl -> Connect -> Alsa | 03:28 |
| Azelphur | I'm testing with lmms and my USB midi piano | 03:28 |
| ailo | Does lmms use jack? | 03:28 |
| Azelphur | Yes | 03:29 |
| holstein | how is lmms now Azelphur ? | 03:29 |
| Azelphur | Yay, low latency works now | 03:30 |
| Azelphur | It seems pretty cool | 03:30 |
| Azelphur | Gay, hate when that happebs | 03:35 |
| Azelphur | Happens* | 03:35 |
| Azelphur | 64 seems a bit choppy sound wise, what makes you able to set 64 and me now? | 03:36 |
| Azelphur | Not* | 03:36 |
| ailo | Azelphur: Could be that your headphones won't work well at lower latencies | 03:37 |
| Azelphur | Ah probably not considering they are wireless :p | 03:37 |
| ailo | That shouldn't be a factor | 03:37 |
| ailo | The internal card should work fairly well with that | 03:38 |
| Azelphur | Guess I would need pro audio headphones to go lower, the set i am using is meant for gaming | 03:39 |
| ailo | Ah, right | 03:40 |
| ailo | He has probably not installed linux-lowlatency | 03:40 |
| ailo | Azelphur: Did you install linux-lowlatency? | 03:40 |
| Azelphur | nope | 03:40 |
| ailo | Azelphur: That will change the latency situation | 03:41 |
| ailo | It's the default Ubuntu Studio kernel | 03:41 |
| Azelphur | awesome, we've already made significant improvements latency wise...my piano is actually usable :D | 03:41 |
| Azelphur | I will try that package too | 03:41 |
| ailo | Azelphur: It's basically exactly the same as the generic kernel, but hasn't been updated for a while. | 03:42 |
| ailo | If you don't need linux-generic, I would just uninstall it after making sure linux-lowlatency booted fine | 03:42 |
| ailo | All though, you'd need to uninstall each kernel image separately | 03:43 |
| Azelphur | righto :) | 03:43 |
| Azelphur | there's a janitor thing that can do that iirc | 03:43 |
| Azelphur | ty for your help anyway, I shall be sure to have lots of fun :D | 03:45 |
| smartboyhw | !dev | 08:29 |
| ubottu | Interested in becoming an Ubuntu Developer? Get started here: https://wiki.ubuntu.com/UbuntuDevelopment | 08:29 |
| smartboyhw | !devel | 08:29 |
| ubottu | If you want to contribute to Ubuntu Studio, please visit #ubuntustudio-devel or join the mailing list from https://lists.ubuntu.com/mailman/listinfo/Ubuntu-Studio-devel | 08:29 |
| smartboyhw | !contribute | 08:30 |
| radar_ | hiya, i'm migrating from an ASIO world and wondering if I need wineasio to route something between reaper,fm and jack | 11:00 |
| holstein | radar_: there is nothing in ubuntustudio preventing *any* software from being written for it | 13:57 |
| holstein | JACK is the routing tool | 13:57 |
| holstein | if the applications you are running are written for JACK, then it will be as easy as connecting a line to connect any application, or physical input or output on your hardware to anything else | 13:58 |
| radar_ | if routing to/from an app running with wine should I need wineasio or wine default driver is fast enough ? | 14:04 |
| holstein | radar_: i havent used wine with JACK | 14:05 |
| holstein | radar_: i use and have good luck with native apps | 14:05 |
| holstein | radar_: if these are windows native applications, i would suggest looking at KXstudio.. its built on ubuntustudio and i know that dev and team have made some windows apps work well | 14:06 |
| holstein | radar_: you can also ask in #opensourcemusicians ..lots of smart folk over there that might be doing what you are trying to do | 14:06 |
| radar_ | thks for the useful tips | 14:07 |
| radar_ | i want to use Reaper (wich runs on wine ... ) the way to join ninjam server and stream | 14:08 |
| radar_ | will see ;) | 14:08 |
| radar_ | still thanks gtg now | 14:08 |
| billc | i have a belkin home base control center can u tell me how to connect to ubuntu | 15:55 |
| billc | connect to ubuntu | 15:55 |
| len-dt | billc, what is a " belkin home base control center"? A midi device? | 15:56 |
| billc | it makes printers appear to b wireless | 15:57 |
| billc | it connects usb to eithernet | 15:57 |
| billc | eithernet | 15:57 |
| billc | eithernet whew | 15:57 |
| billc | found supposedly ubuntu drivers but can't install | 15:59 |
| billc | cant install | 15:59 |
| ailo | billc: This is more of a ubuntu question. I would just google it though | 15:59 |
| billc | all is not printing on screen | 16:00 |
| billc | screen | 16:00 |
| billc | u saying xubuntu help | 16:00 |
| len-dt | no #ubuntu | 16:01 |
| len-dt | xubuntu and ubuntustudio are built on ubuntu | 16:01 |
| len-dt | what you are asking about is part of the base ubuntu packages ubuntustudio is built on. | 16:02 |
| billc | k | 16:02 |
| len-dt | the #ubuntu channel has a whole lot more knowledge base than the few people here | 16:03 |
| billc | understand | 16:03 |
| billc | where? | 16:03 |
| ailo | billc: Same network. The channel is called #ubuntu | 16:04 |
| billc | ty | 16:05 |
| cbx33 | hey all | 19:55 |
| cbx33 | long time no see peeps | 19:55 |
| cbx33 | do we have an RT kernel anymore? | 19:56 |
| len-dt | cbx33, low latency kernel. | 20:46 |
| cbx33 | how do i install that? | 20:46 |
| len-dt | performance is very good. better than generic for sure | 20:46 |
| len-dt | What are you running for a distro? | 20:47 |
| cbx33 | ubuntu 12.04 | 20:48 |
| len-dt | there is a package called linux-lowlatency | 20:49 |
| cbx33 | ok ty | 20:49 |
| len-dt | No problem. | 20:49 |
| cbx33 | what's the diff between PAE and non PAE | 20:50 |
| len-dt | PAE allows the kernel to use more memory if it is 32bit. 64bit doesn't need that | 20:52 |
| len-dt | so the pae is 32bit and the non should be 64bit | 20:53 |
| cbx33 | ahh ok | 20:54 |
| cbx33 | ty | 20:55 |
| cbx33 | installing | 20:55 |
| * len-dt has kids to pick up from school | 20:55 | |
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