Linux-audio-user September 2005

linux-audio-user@lists.linuxaudio.org

157 participants
172 discussions

[linux-audio-user] Any know USB problems with RT-patch?

by Peter Mogensen

I've been having great success with kernel 2.6.13.1 and realtime-preempt (patch rt6). However... When I tried to hook up my MIDI keyboard via an external USB-MIDI device I no longer see any midi-ports. The kernel does see the event though: =========================================================== Sep 13 19:59:04 localhost kernel: usb 2-1: new full speed USB device using uhci_hcd and address 7 Sep 13 19:59:04 localhost kernel: usbaudio: device 7 audiocontrol interface 0 has only 1 altsetting. Sep 13 19:59:04 localhost kernel: usbaudio: device 7 audiocontrol interface 0 has 0 input and 0 output AudioStreaming interfaces Sep 13 19:59:04 localhost kernel: midi: probe of 2-1:1.0 failed with error -5 Sep 13 19:59:04 localhost kernel: usb-midi: Found MIDISTREAMING on dev 0a92:1010, iface 1 Sep 13 19:59:04 localhost kernel: usb-midi: Found MIDIStreaming device corresponding to Release 1.00 of spec. Sep 13 19:59:04 localhost kernel: usb-midi: Found IN Jack 0x01 EMBEDDED Sep 13 19:59:04 localhost kernel: usb-midi: Found IN Jack 0x05 EMBEDDED Sep 13 19:59:04 localhost kernel: usb-midi: Found IN Jack 0x02 EXTERNAL Sep 13 19:59:04 localhost kernel: usb-midi: Found OUT Jack 0x03 EMBEDDED, 1 pins Sep 13 19:59:04 localhost kernel: usb-midi: Found OUT Jack 0x04 EXTERNAL, 1 pins Sep 13 19:59:04 localhost kernel: usb-midi: Found OUT Jack 0x08 EXTERNAL, 1 pins Sep 13 19:59:04 localhost kernel: midi: probe of 2-1:1.1 failed with error -5 ============================================================== It turns out that if I unplug my USB-mouse it won't get reconnected either, so it seems to be a general USB problem. I didn't have USB problems with earlier kernels. Peter

18 years, 11 months

[linux-audio-user] help with bandwidth

by Marcos Guglielmetti

Hello, Please, help us and, download only from: http://ftp.gnu.org/gnu+linux-distros/ututo-e/ The other mirror has been almost overloaded or "overdownloaded", the people overcomed our cravings. There are now 6000 downloads from the other server, and 900 allready downloaded. Spanish info: el principal navegador parece ser el firefox (56%), seguido del explorer (30%), luego todos debajo del 5%: mozilla, konkeror, opera ... sistemas operativos: windows 70%, linux 26%, resto debajo de 2%: macintosh, freebsd, symbian (*) (*) ¿alguien entrando desde un móvil? al parecer un Nokia6600 accesos desde: País Páginas Hits Bytes Spain es 823 5852 106.51 GB United States us 738 4727 80.07 GB Desconocido ip 211 1714 10.74 GB European Union eu 121 931 12.05 GB Argentina ar 106 588 6.45 GB Canada ca 49 218 4.35 GB Mexico mx 31 282 2.38 GB Brazil br 22 172 2.83 GB Chile cl 20 188 1.28 GB Italy it 17 173 2.98 GB Germany de 13 94 4.17 GB Great Britain gb 11 149 1.47 GB Colombia co 11 62 2.07 GB Luxembourg lu 10 105 9.18 MB Uruguay uy 9 63 851.18 MB Australia au 7 107 106.73 MB Netherlands nl 7 75 768.76 MB Cuba cu 5 5 20.80 KB Finland fi 5 30 702.46 MB Portugal pt 4 81 5.90 MB Switzerland ch 4 55 702.78 MB Thailand th 4 4 19.07 MB Hungary hu 4 54 703.38 MB Singapore sg 3 32 703.77 MB Puerto Rico pr 3 53 2.11 MB Otros 31 313 3.34 GB info transmitida: Día Número de visitas Páginas Hits Bytes 10 Sep 2005 77 151 533 13.07 GB 11 Sep 2005 388 653 1495 48.65 GB 12 Sep 2005 826 1235 12472 154.47 GB 13 Sep 2005 139 197 1545 28.98 GB (hasta las 7 am) archivo musixGNU+Linux026.iso, 345 GB transmitidos en 3 días ... :-! puf, a este ritmo en menos de una semana se agota el ancho de banda @8*0 chaucito y abrazos :-) ___________________________________________________________ 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo http://correo.yahoo.com.ar

18 years, 11 months

[linux-audio-user] thoughts towards an ALSA configuration utility

by Dave Phillips

Greetings: While I was working on the JACK article I was reminded how much I rely on is Rui Capela's QJackCtl. I haven't touched JACK at the command-line in a long while, thanks to QJC. So I was thinking about the complexity of configuring ALSA and I started wondering what I'd want to see in a more complete ALSA configuration utility. I'm just rambling out loud here, so feel free to add and comment: 1) A soundcard configuration utility that would install multiple drivers in a single pass, order and reorder devices as you wish, and provide useful help regarding module options. This utility would bundle the edit jobs for modules.conf and supply the information from modinfo. Optimally the modinfo output could be made selectable for instant addition to the configuration. [Add relevant info here for doing the same with the 2.6 modules system] 2) An auto-generated .asoundrc, based on the capabilities of your cards and chipsets, and a facility for editing, saving and deleting that file. The editor should provide examples and explanations for the possible additions to .asoundrc. 3) Built-in utilities for IRQ ordering and other hardware optimizations. 4) A panel for a built-in mixer or facility to select a mixer, with a store/restore interface to alsactl. Ideally the built-in mixer would handle *any* soundcard supported by ALSA. 5) Start/stop/restart ALSA from the utility. 6) GUI for ALSA sequencer client connections. 7) Integrated loaders for soundfonts and other patches. 8) Display and control of ALSA's MIDI resources e.g. aseqnet, amidi, Tooltips and other help should be available for every option and every part of the configurator to make the setup easy and quick. I realize that this utility could get rather big. Perhaps something resembling xine's "level of mastery" could be added to divide the utility into basic and advanced configuration panels ? I think ALSA is a great system, but fully understanding it is non-trivial, and its variety makes it difficult for a normal user to "see" the whole system. QJC envelopes JACK and its possibilities in such a way that it's often ready to rock at its defaults, and it makes it easy to further configure the server if necessary. Certainly something similar could happen for ALSA, yes ? A QAlsaCtl maybe ? One problem: How to resist the temptation to refer to its acronym as "quack"... Best, dp

18 years, 11 months

[linux-audio-user] .asoundrc for Terratec DMX 6Fire 24/96

by David Haggett

I've managed without one so far, and after a little tuning (i.e. putting soundcard in a different slot!) seem to have managed to banish XRUNs. I've tried the sample files at http://www.alsa-project.org but they don't seem to make any difference. I'm using SUSE 9.3 x86_64 which comes with alsa 1.0.9. I've not rebuilt the kernel to provide it with any realtime support. -- David Haggett

18 years, 11 months

[linux-audio-user] JACK and memory

by Peter Mogensen

Hi, I'm desperately trying to get my 1400MHz Pentium M with Debian Sarge to behave just a little like my old 66MHz BeOS system in terms of audio. But I keep running into troubles. I think I have the latency under control with kernel 2.6.13 and realtime-preempt, but I've got some stability problems (probably network related), so I'm working with kernel 2.6.12.5 unpatched. Right now my problem is that as JACK seems to work for test cases, but as soon as I want to do real work all JACK related programs starts to consume huge amounts of memory, which prevents me from doing any real work. System: Debian Sarge with some DeMuDi packages. Kernel 2.6.12.5 with realtime-lsm module ALSA 1.0.9rc2 libc6 2.3.2.ds1-22.demudi1 (NPTL 0.60 bug fix) libasound2 1.0.9-2 jackd 0.99.51-1 JACK starts fine with: $ /usr/bin/jackd -u -R -d alsa -d hw -r 44100 -p 2048 -n 2 ...(or via qjackctl), and simply things like playing xmms and small samples work. Even a minimal Timidity configuration with only freepats works, and I can make Rosegarden4 play midi through Timidity. But then the fun stops. All these applications takes enormous amounts of memory. All I have to do to trash my system is start JACK, and then start qsynth (but doing nothing with them). Is this memory frenzy normal? Peter

18 years, 11 months

Re: [linux-audio-user] Jamin/Ardour export bug and question

by eviltwin69＠cableone.net

On Mon, 12 Sep 2005 01:00 , R Parker <rtp405(a)yahoo.com> sent: >Hi Peder, > >--- Peder Hedlund peder(a)musikhuset.org> wrote: > >> >> Bug (?) : >> I have a 24 bit stereo track in Ardour connected to >> Jamin and returned >> to another stero track. When the mastering is done I >> export the mastered >> track to 16 bit wav. Everything works, but after >> Ardour has exported 100% >> (and before closing the export screen) it's dead for >> 15-45 secs. >> During this, 'top' shows 85-95% CPU usage for Jamin. >> If I close Jamin before exporting, Ardour responds >> directly. > >I see this too. Until someone fixes it, just let it >run it's course. > If you have left JAMin up and it has input ports from Ardour connected it will continue to process the input. This will eat up a shitload(TM) of CPU. Either shutdown JAMin or disconnect its inputs prior to exporting from Ardour. Jan

18 years, 11 months

[linux-audio-user] Jamin/Ardour export bug and question

by Peder Hedlund

Bug (?) : I have a 24 bit stereo track in Ardour connected to Jamin and returned to another stero track. When the mastering is done I export the mastered track to 16 bit wav. Everything works, but after Ardour has exported 100% (and before closing the export screen) it's dead for 15-45 secs. During this, 'top' shows 85-95% CPU usage for Jamin. If I close Jamin before exporting, Ardour responds directly. Question: I have an Ardour session with 17 tracks that have EQ, compression and the occasional effect pre-fader, a phaser on a pre-fader send bus and a stereo reverb pre-fader on the master bus. If I route the master bus to Jamin and back in on a stereo track the Jamin output sounds fine, but the stereo track ends up with none of the effects. Is it impossible to do a multitrack mastering with the effects intact or am I doing something wrong? HW/SW specs: AMD AthlonXP 1200+, 512MB RAM, SB Live!, kernel 2.6.12 rlimits, jack in RT mode. Ardour CVS from Aug 31 and Jamin CVS from mid/end July. Regards, Peder

18 years, 12 months

[linux-audio-user] 2.6.13 kernel: which patches for better latency

by guy

Hi I'm just about to compile a 2.6.13 kernel for low latency audio work. The docs I have accessed are either confusing (sorry if its just me ;0) ) or rendered out of date by kernel developments. I know that some features such as pre-empt are now in the kernel. Which patches (if any) would you folks advise that I should apply. I am also unsure if should enable the 'big kernel lock' feature. Thanks in advance for any help Guy -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.18/91 - Release Date: 06/09/2005 ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com

18 years, 12 months

[linux-audio-user] Free music/Licenses again

by Juhana Sadeharju

Hello. Anyone has a list of sites carrying free music? And now this license thing: Can I download the files and place them available from our site? Compare with GPL license. Does creativecommons license allow that? Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

18 years, 12 months

[linux-audio-user] JACK configuration: Preventing system lockups

by Nathaniel Virgo

Hi, I'm playing a lot with SuperCollider, which means that I quite often overtax the processor within a JACK app. When I was using a patched 2.4 kernel it used to say it was "zombified" and need to be re-started, but since upgrading to Fedora Core 4 and the Planet CCRMA patched 2.6 kernel it just seems to lock up my system: I might still be able to hear some horribly distorted sound but the mouse pointer doesn't move and keypresses aren't registered for a very long time so I quite often have to do a hard reset (this sometimes used to happen with the 2.4 kernel when plugins in Ardour ran into denormal problems as well). It also seems strange that this can happen quite suddenly after several seconds of QJackCtl saying I'm only using a few percent of the CPU. My question then, is is this a difference in the way JACK is configured? Can I set it up so that it will zombify processes before they lock up the GUI? I tried running Jack in soft mode but I could hardly do anything without getting loads of dropouts. On a related note, is there a JACK configuration HOWTO anywhere? Things I am currently mystified by include the meaning of the phrase "periods per buffer" and how to tell whether my (cheapo laptop internal) soundcard should work better at 44100Hz or 48000. Thanks in advance for any help, Nathaniel Virgo

18 years, 12 months

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Linux-audio-user September 2005