Linux-audio-user September 2016

linux-audio-user@lists.linuxaudio.org

61 participants
64 discussions

by Peter P.

Hi list, I have been search the archives and the web a bit and it seems there is no easy way to route html5 audio playback from firefox through jack on Debian testing. Is this still the case or has there been recent development that might enable it? What would have to be done to make it work? This functionality is the last piece in my puzzle to finally get rid of flash. thanks for pointers, P

5 years, 11 months

ShowQ - "a QLAB for Linux"

by Michael Jarosch

Hi there! ShowQ is a unique cue-player for Linux-Audio-Users. I use it as a core application for my theater activities. Even in the linux-community it's not a very well known application, although there's no other linux-program (I know) if you need a one-shot-audio-player with features like f.e. programmable fade-in, fade-out, no matter if you want it time-based or triggered by space (or another key). It can do a lot more - ShowQ has MIDI-support. Although I never tested this feature, it should be possible to control any application with MIDI-support. QLC(+) f.e. - or maybe some video-players do support MIDI - I don't know... Yeah, of course, ShowQ is not a drop in replacement for QLAB, but speaking about audio it fits quiet perfectly in my setup. ShowQ is in the Debian (and Ubuntu?) repositories, it's written in C++ and of course released under the terms of the GPL. Although this app is quiet useful for technicians like me, the development stopped years ago. I am not a coder, but I do my best to keep this project alive. On the Debian bug-tracker I write bug-reports for ShowQ, hoping that on one hand it's useful for other users to work around problems, on the other hand that someone fixes them. Last time I reported a bug Jaromír Mikeš the Debian-maintainer of ShowQ wrote that he is not able to fix the bugs and he would like to kick ShowQ. Of course, he also would like to package an alternative if there would be some he could package. I don't know any - so my linux-based theater setup is about to be killed one day when ShowQ wouldn't compile on my debian machine, anymore. So, what do I want from you? Test ShowQ! Maybe it's the app you've been missing for a long time! And if you're a coder with C++-skills, check out my bugreports on https://bugs.debian.org/cgi-bin/pkgreport.cgi?repeatmerged=no&src=showq - maybe you've got the clue... OR: Got an alternative to ShowQ? You're welcome! Greets! Mitsch

6 years, 2 months

Looking For Some ZynAddSubFX Powered Tracks

by Mark D. McCurry

Hello there LAU, I'm trying to update the old demos on the ZynAddSubFX site and I thought it would be great to replace the old demos with songs from the LAU community. Can anyone post some links to some of their favorite tracks that make good use of Zyn? Ideally they'd be on something like soundcloud so they could be gathered onto a playlist on the project page, but if not it should be fun to hear what people have been making. --Mark

6 years, 12 months

Laptop sound problems

by Bill Purvis

Hi, I set up my laptop to initiate Calf Plugin (Fluidsynth) and Qjackctl at login. When I then login, I get no sound from various apps. The preferences->Sound->test sound also produces nothing. Running Totem, just hangs - no output and the progress bar stays at 0. I've now disabled Calf and Qjackctl at login and it all works again. Can anyone explain what is going on? Output from aplay -l: $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 (this is with it working, but it looked the same when not working) Thanks, Bill -- +----------------------------------------+ | Bill Purvis | | email: bill(a)billp.org | +----------------------------------------+

6 years, 12 months

Announcement: new Yoshimi patches

by J. C.

Hi everyone, I just released a set of Yoshimi patches, including some instruments and patchsets (performance or combin to some hardware users). You can download them here: https://freeshell.de/~silvain/software/jg_yoshimi_patches-0.1.tar.bz2 My first ten instruments and 3 patchset! At this point: a HUGE thank you to Will Godfrey for the tireless and tremendous work he's put into Yoshimi over the past few years and in particular the efforts he's put into the new commandline interface over the past few weeks. It's simply amazing! Still a little rough, but with complete access to all parameters. Will: you're a jewel! <3 I can only say, that Yoshimi is a treasure trove of sonic possibilities. I've never seen such humungous and complex oscillator block before. Enjoy and I'd love some feedback. :) Best wishes, Jeanette

6 years, 12 months

Re: [LAU] Laptop sound problems

by Ralf Mardorf

Please don't reply off-list. On the list there are several subscribers who maintain an Ubuntu flavour, that AFAIK by default combines jackdbus and pulseaudio, they could help you much better than I could do, since I categorically refuse pulseaudio. On Tue, 27 Sep 2016 11:29:34 +0100, Bill Purvis wrote: >Thanks Ralf, but it was all working with jack in place before I set >this up. Pulseaudio is latest version from LAU so I don;t see why >there should be a problem. You should mention what pulseaudio version, jackd version etc. you are using, since "latest version from LAU" is not really useful. Perhaps mentioning the distro and it's release could be also helpful. I never used pulseaudio and never ever will use it, I don't have it installed, so I only could provide a link: http://www.jackaudio.org/faq/pulseaudio_and_jack.html Regards, Ralf

7 years

John Option: new song and new video

by Massimo Barbieri

Hi, today we have published the video of another single of John Option: Lifestyle obsession. As usual we published the song under the terms of the Creative Commons License (CC-BY-SA) and we produced it only with free software: Ardour, Hydrogen, Jack, Qsynth, CALF, and many other great free audio software that we used under Debian GNU/Linux. Here you can listen the single and see the video (made with kdenlive): https://youtu.be/6gm-3G-ZJmI As for the previous songs we published in our website[1] the single recording tracks and the complete Ardour session. All this material is published under the terms of the Creative Commons license Attribution Share alike so that anyone can use our tracks to produce a remix of our song or even a new song that have to be published under the same license. You can find all about our project here: http://johnoption.org If you feel like I'd love to read your feedback, because the encouragement of the people who listen to us and appreciate the philosophy of our project is the only fuel for us to continue. And if you like to be updated about our next release, please subscribe to our YouTube channel or any other social network you like (see link to our profiles on our website[1]). Best regards, Max-B 1. http://johnoption.org -- IM: massimo(a)jabber.fsfe.org - GnuPG Public Key-Id: 0x5D168FC1

7 years

MidiMemo and MidiGraph

by Maurizio Berti

[this message has been sent to the alsa-users ML too] Hello, in the last two weeks I've been working on two MIDI related personal projects. MidiMemo is an automatic MIDI recorder; the concept is similar to the one of JACK Timemachine and the autorec feature of Pianoteq: you don't need to remember to hit record everytime, since it automatically connects to every available and readable ALSA MIDI port and records every incoming event. New hardware/software devices are automatically connected too without the need for user interaction. As soon as MidiMemo receives a midi event it will start a new "stream", there is a configurable minimum time after which it will actually remember the stream, otherwise it will be discarded; another configurable "last event limit" time will allow you to set how much time MidiMemo will be waiting for new events before closing and saving the stream. Each stream can be inspected, with a full list of the recorded events that can be filtered and, eventually, exported to a .MID file, even with a time conversion. There are still some bugs (a strange export problem with sysex messages I'm trying to solve) but it works fine for "normal" playing. https://github.com/MaurizioB/MidiMemo MidiGraph is a graph inspector for ALSA sequencer, and it is intended for developing or debugging purposes. It displays every available client and port, even those that are not normally listed using aplaymidi/arecordmidi or QJackCtl, with detailed information about every port (type and capabilities) and connection. https://github.com/MaurizioB/MidiGraph Both of them are written in Python 2.7, and require PyQt4 and pyalsa. I'm still developing them, there's no setup yet and some bugs and features still need work. I hope you will find them useful, and I'd be glad to have some feedback. Cheers, MaurizioB

7 years

limits.conf not applied in Ubuntu 16.10

by Aurélien Leblond

>>* Would you guys have any idea what I can have a look at? *> > Sounds like a pam_limits.so not getting loaded. I'd compare the contents > of /etc/pam.d/ on 16.10 with the one on 16.04. All right, interesting - so downloaded the source code of lightdm in 16.04 to compare the pam config files and they look a lot different. So I guess lots of work is being done there - what I find interesting is that the 16.04 version of the lightdm conf does not include pam_limits.so. Files are below. 16.10: #%PAM-1.0 auth requisite pam_nologin.so auth sufficient pam_succeed_if.so user ingroup nopasswdlogin @include common-auth auth optional pam_gnome_keyring.so auth optional pam_kwallet.so auth optional pam_kwallet5.so @include common-account session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close #session required pam_loginuid.so session required pam_limits.so @include common-session session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open session optional pam_gnome_keyring.so auto_start session optional pam_kwallet.so auto_start session optional pam_kwallet5.so auto_start session required pam_env.so readenv=1 session required pam_env.so readenv=1 user_readenv=1 envfile=/etc/default/locale @include common-password 16.04: #%PAM-1.0 # Block login if they are globally disabled auth required pam_nologin.so # Load environment from /etc/environment and ~/.pam_environment auth required pam_env.so # Use /etc/passwd and /etc/shadow for passwords auth required pam_unix.so # Check account is active, change password if required account required pam_unix.so # Allow password to be changed password required pam_unix.so # Setup session session required pam_unix.so session optional pam_systemd.so

7 years

limits.conf not applied in Ubuntu 16.10

by Aurélien Leblond

Hi all, Is testing Ubuntu 16.10 these days, noticed something interesting. Since upgraded to 16.10 Yakkety, modifications in /etc/security/limits.conf are not taken into consideration when logging in the graphical interface. Reported the bug already to Ubuntu, but if I could find a workaround in the meantime... /etc/security/limits.conf: @audio - rtprio 99 @audio - memlock unlimited I tried the same settings in /etc/security/limits.d/audio.conf, to the same results. After logging in Unity, opening a console, the limits are not set: blablack@ideaon:~$ ulimit -l -r max locked memory (kbytes, -l) 64 real-time priority (-r) 0 Reloging to my user DOES apply the limits: blablack@ideaon:~$ ulimit -l -r max locked memory (kbytes, -l) 64 real-time priority (-r) 0 blablack@ideaon:~$ su blablack Password: blablack@ideaon:~$ ulimit -l -r max locked memory (kbytes, -l) unlimited real-time priority (-r) 99 Switching to a console (ctrl+alt+f1) and logging in would apply the limits as well. The exact same setup used to work fine on Xenial 16.04 before upgrade. I think it's something with Pam and Lightdm (or at least a lot of googling is pointing me in that direction). Would you guys have any idea what I can have a look at? Thanks in advance, Aurélien

7 years

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Linux-audio-user September 2016