Linux-audio-user

linux-audio-user@lists.linuxaudio.org

14 participants
20651 discussions

by Robert Epprecht

I have moved my soundcard to a new computer, and wanted to have it on a high priority interrupt. The mobo is ASUS P4P800. lspci tells me something like "pin A routed to IRQ 23" (or similar) I do not know anything about interrupt priority with these new irq's. Pointers, informations or help highly appreciated. Robert Epprecht

21 years, 6 months

[linux-audio-user] Using VST-Instruments with Linux and (almost) NO LATENCY

by michael heubeck

hi, i don't know much about professional audio-applications for linux but i want to try using VST-Instruments with linux-applications. which applications can i tra/use? is it possible to get low or almost no tatency with the new kernel 2.6? thany mike ______________________________________________________________________________ Nachrichten, Musik und Spiele schnell und einfach per Quickstart im WEB.DE Screensaver - Gratis downloaden: http://screensaver.web.de/?mc=021110

21 years, 6 months

[linux-audio-user] EXT3?

by David Baron

Seen references to problems with audio. What is the issue here?

21 years, 6 months

[linux-audio-user] Ardour compile error

by krozilo＠nm.ru

Hi! i try to compile ardour, version 0.9beta8 and also CVS-snapshot 20040121040046. ./configure OK. make ... make[6]: Entering directory `/home/zrv/src/ardour/libs/gtkmm/src/gtkmmproc' if g++ -DHAVE_CONFIG_H -I. -I. -I../.. -I../.. -I../.. -D MACRO_DIR=\"/src/ardour/libs/gtkmm/src/gtkmmproc\" -D M4=\"m4\" -g -O2 -I/src/ardour/libs/sigc++ -I/src/ardour/libs/sigc++/sigc++/config -I/src/ardour/libs/pbd -I/src/ardour/libs/midi++ -I/src/ardour/libs/ardour -I/src/ardour/libs/soundtouch -I/src/ardour/libs/ -I/src/ardour/libs/gtk-canvas -I/src/ardour/libs/gtk-canvas/gtk-canvas -I/src/ardour/libs/gtkmmext -I/src/ardour/libs/gtkmm/gdk-- -I/src/ardour/libs/gtkmm/src -I/src/ardour/libs/gtkmm -MT parser.o -MD -MP -MF ".deps/parser.Tpo" \ -c -o parser.o `test -f 'parser.cc' || echo './'`parser.cc; \ then mv ".deps/parser.Tpo" ".deps/parser.Po"; \ else rm -f ".deps/parser.Tpo"; exit 1; \ fi parser.cc: In function `int yyparse()': parser.cc:1776: parse error before `goto' make[6]: *** [parser.o] Error 1 make[6]: Leaving directory `/home/zrv/src/ardour/libs/gtkmm/src/gtkmmproc' make[5]: *** [all] Error 2 make[5]: Leaving directory `/home/zrv/src/ardour/libs/gtkmm/src/gtkmmproc' make[4]: *** [all-recursive] Error 1 make[4]: Leaving directory `/home/zrv/src/ardour/libs/gtkmm/src' make[3]: *** [all-recursive] Error 1 make[3]: Leaving directory `/home/zrv/src/ardour/libs/gtkmm' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/zrv/src/ardour/libs/gtkmm' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/zrv/src/ardour/libs' make: *** [all-recursive] Error 1 sh-2.05b$ any help? regards. __________ www.newmail.ru -- узел свободных коммуникаций.

21 years, 6 months

[linux-audio-user] ANN: Specimen Version 0.0.3 Released

by Pete Bessman

Guess what? ...*chirp*...*chirp*... Right, well... Specimen is midi controlled audio sampler for GNU/Linux systems, and this is a new release of it. I'm justifying this on the inclusion of velocity sensitivity, cuts, and proof-of-concept (read: crappy) pitch scaling. You can download the newest tarball, check out the new screenshot, and listen to the _fearsome_might_ of Specimen at www.gazuga.net. [pb]

21 years, 6 months

Re: [linux-audio-user] Which kernel for low latency and kernel 2.6.1-mm# problems

by davidrclark＠earthlink.net

I've read some of these discussions and cannot offer much, except that I have been trying to use the SATA driver in "enhanced" mode with an ASUS board with Intel ICH5R chipset. This is impossible to do for very long. Eventually accessing the hard drives causes the machine to lock up. If the mouse is moved while a process that has extensive disk activity is running, erratic behaviour results, such as pasting of text into xterms. I've also observed that it is impossible to run e2fsck on a large drive without it halting. Hitting keys, especially Ctl-Alt-Del, will restart e2fsck, this must be done repeatedly (dozens of times for checking 3 PATA's and one SATA). What does this have to do with jack? I come down on the side of a very serious bug in the kernel, scheduler, something of that nature --- not jack or the SATA driver. I believe that other demanding drivers must be also having problems. Now I am running a P4/800 in APIC mode for 2.6.1 with low-latency selected. I have not tried jack yet (not that far along). I'm also running Slackware 9.1 (uses devfs). I think we'll all be very happy with this new kernel once this gets worked out. It has a lot of good features. I like the build process better, too, and gconfig. Dave.

21 years, 6 months

[linux-audio-user] 2.6.1, capabilities, jackstart, and Hydrogen

by Benjamin Flaming

I'm in the process of trying to rebuild my audio box, after thoroughly mangling my previous setup. I started with a fresh install of Slackware 9.1. I then built the following software: Vanilla 2.6.1 kernel (with 2-line capabilities patch) ALSA-lib 1.0.0rc1 Jack 0.94.0 (configured with --enable-capabilities) libcap 1.10 Hydrogen 0.8.1 When I tried to start Hydrogen, however, the application locked up when it connected to Jack. Any other program interacting with Hydrogen (e.g. "killall -9 hydrogen", "ps -A", "top") also locked up. Jack continued running smoothly, as did the rest of the environment. This problem does not happen when I run as root, nor does it happen when I run Jack without realtime scheduling. It happens only when I use jackstart as a normal user. I would like to test some of my other favorite Jack applications, but sourceforge.net's CVS servers seem to be down right now, and some of the library dependencies don't seem available by any other means. The only other Jack client I'm aware of on my machine is jackrec. I successfully used jackrec to capture 5 seconds of audio, with no lockup. Originally, the output of dmesg contained "Debug: sleeping function called from invalid context at include/asm/semaphore.h:119" statements each time there was a lockup. A visit with Google turned up this message: http://www.mail-archive.com/alsa-devel@lists.sourceforge.net/msg10203.html The call trace from my dmesg output was essentially identical, and so I applied the patch contained in the message. This silenced the complaints, but the lockups persisted. I was able to get a fresh CVS copy of Hydrogen (right before CVS went down), but the result is the same as with 0.8.1. I was unable to build 0.8.0, due to backward-compatibility problems with Jack. Originally, I had Jack configured with --enable-optimize and --enable-posix-shm, but I have since rebuilt (make uninstall, make clean, ./configure, make, make install) with only --enable-capabilities. No effect. If I use strace to launch Hydrogen, I get output which consistently terminates with the following lines: sched_get_priority_max(0x1) = 99 sched_get_priority_min(0x1) = 1 mlockall(MCL_CURRENT|MCL_FUTURE If I use strace to launch jackrec, the output continues past the mlockall call: sched_get_priority_max(0x1) = 99 sched_get_priority_min(0x1) = 1 mlockall(MCL_CURRENT|MCL_FUTURE) = 0 rt_sigprocmask(SIG_SETMASK, NULL, [RTMIN], 8) = 0 write(7, "\240\360\n@\0\0\0\0 M\5\10\31o\7@P\260\4\10\0\0\0\200\0"..., 148) = 148 rt_sigprocmask(SIG_SETMASK, NULL, [RTMIN], 8) = 0 (Plus another screen or so of additional output.) If there's any other info I should provide, please let me know. I'm out of my league here. I don't know whether the issue is the kernel, ALSA, Jack, libcap, or Hydrogen. Can anyone point me in the right direction? |) |)enji

21 years, 6 months

[linux-audio-user] Recommendations for the newbie?

by Richard K. Ingalls

Thanks to all who replied to my earlier posting about available apps for linux audio in comparison to Window$/Mac apps. Now that I know there is an abundant supply of apps... What would be your recommendations to help a Linux newbie make the transition and begin using a Linux DAW? In other words how do you make music using your Linux DAW? Next, sound card recommendations? A friend may donate a Delta66 with Omni I/O breakout box to me. I may also purchase a SB Live! (EMU10K) card for using soundfonts. What cards work well? Good driver support. Low latency. Good D/A chips. Low noice. Etc. Finally, is there a preference to Intel or AMD CPUs and chipsets? Does one seem to work better than another? VIA chipset? nVidia? Intel? Sorry for asking what probably seems mundane to you. But, I'm new and want to get educated before making the switch. But I am dedicated to making the switch from Window$ to Linux. -- =========================================================== Richard K. Ingalls Director of Information Technology Glenwood R-8 School District West Plains, MO email..ringalls(a)glenwood.k12.mo.us web....glenwood.k12.mo.us ph.....417.256.4849 fax....417.257.2567 "Glenwood R-8: home of the mustangs!" ===========================================================

21 years, 6 months

[linux-audio-user] via82xx and jackd

by Keith Parkins

Hi, 1) I'm using alsa 1.0.1 with the latest version of jackd on a via kt400 mobo (VT8377) and a VT8233 audio controller. I have the low-latency/premp kernel patches as well as the capabilities patch applied to a 2.4.22 kernel. I get xruns like crazy that average around 0.09 msecs when running jackd in duplex mode. These disapear when running in either capture or playback mode. I had seen that there may be some issues with the via82xx chipset and jackd on the alsa list, but no solutions or description of what the actual problems were. Am I stuck in a duplex-free zone or is there a way to work around this? Will this affect my ability to use ardour as multitracking device using the mic/line-in, or will it only cripple my ability to use other programs as jack slaves? 2) Even with the capabilities patch, I get the following error when running jack as a normal user: JACK: unable to mlock() port buffers: Operation not permitted cannot set thread to real-time priority (FIFO/20) (1: Operation not permitted) cannot use real-time scheduling (FIFO/10) (1: Operation not permitted) Any ideas? Thanks! Keith

21 years, 6 months

RE: [linux-audio-user] Recommendations for the newbie?

by eviltwin69＠cableone.net

Delta 66 is good (and well supported). I use AMD and VIA with few problems. Of course, it can take a while to get everything the way you want it. Tuning the system is probably the most time consuming part. Jan -----Original Message----- From: "linux-audio-user-bounces(a)music.columbia.edu" <linux-audio-user-bounces(a)music.columbia.edu> on behalf of "Richard K. Ingalls" <ringalls(a)glenwood.k12.mo.us> Sent: Wed, 21 Jan 2004 12:25:43 -0600 To: "A list for linux audio users" <linux-audio-user(a)music.columbia.edu> Subject: [linux-audio-user] Recommendations for the newbie? Thanks to all who replied to my earlier posting about available apps for linux audio in comparison to Window$/Mac apps. Now that I know there is an abundant supply of apps... What would be your recommendations to help a Linux newbie make the transition and begin using a Linux DAW? In other words how do you make music using your Linux DAW? Next, sound card recommendations? A friend may donate a Delta66 with Omni I/O breakout box to me. I may also purchase a SB Live! (EMU10K) card for using soundfonts. What cards work well? Good driver support. Low latency. Good D/A chips. Low noice. Etc. Finally, is there a preference to Intel or AMD CPUs and chipsets? Does one seem to work better than another? VIA chipset? nVidia? Intel? Sorry for asking what probably seems mundane to you. But, I'm new and want to get educated before making the switch. But I am dedicated to making the switch from Window$ to Linux. -- =========================================================== Richard K. Ingalls Director of Information Technology Glenwood R-8 School District West Plains, MO email..ringalls(a)glenwood.k12.mo.us web....glenwood.k12.mo.us ph.....417.256.4849 fax....417.257.2567 "Glenwood R-8: home of the mustangs!" ===========================================================

21 years, 6 months

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Linux-audio-user