Linux-audio-user October 2004

linux-audio-user@lists.linuxaudio.org

153 participants
223 discussions

Re: [linux-audio-user] Latency issues with laptops

by thewade

Is there a way to tell from inside linux, for example a message sent to the kernel, what method acpi uses to access the hardware? -thewade

20 years, 2 months

[linux-audio-user] error report 2.6.9-rc4-mm1-VP-T4

by thewade

Towards the ends of debugging, I have posted my build errors for the 2.6.9-rc4-mm1-VP-T4 kernel at: http://www.aproximation.org/application/make-2.6.9-rc4-mm1-VP-T4.err The make file I used is at: http://www.aproximation.org/application/kernel.config-2.6.9-rc4-mm1-VP-T4 And information about my machine can be found at: http://www.aproximation.org/application/AMD64laptop.html Im going to try rc3-mm3-t3 now... Thanks! -thewade

20 years, 2 months

[linux-audio-user] Starts with a pop

by Greg Reddin

This is something that has bugged me ever since I built my Linux DAW. When I boot up, when I start jack, when I open a web page with Flash, when I get a licq message -- anything that uses my audio driver, I hear a fairly loud low-end pop. Is this common? Is it a known issue I can fix? I figure it's a problem somewhere in the following (backwards) chain: Delta1010LT hardware (SPDIF out) -> Delta1010 alsa driver -> alsa library -> jack. I suspect it's not jack since it happens with other audio output as well. I don't remember, but I don't think it was happening when I was using the analog outs. Of course I can check that pretty quickly when I get my Linux box hooked back up tomorrow. Thanks, Greg __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail

20 years, 2 months

Re: [linux-audio-user] error report 2.6.9-rc4-mm1-VP-T4

by thewade

I tried just 2.6.9-rc3-mm3 and I got it to boot, although kudzu pops up but I cannot use my keyboard. Even to log in; I have to hit the power button! I thought I turned every possible keyboard on (AT and XT), as the .config is copied from my current kernel: 2.6.9-rc3. My config: http://www.aproximation.org/application/kernel.config-2.6.9-rc3-mm3 Has anyone else had this problem: e.g. no keyboard on 2.6.9-rc3-mm3? I thank you for whatever help you can offer! -thewade

20 years, 2 months

Re: [linux-audio-user] error report 2.6.9-rc4-mm1-VP-T4

by thewade

> Here\'s the patch: > > http://lkml.org/lkml/diff/2004/10/11/159/1 I applied the patch and the kernel built, but like 2.6.9-mm2-VP-S9 it crashed before it could load. The last bit of the message was a lot of what I guess are frame pointers, but there was a few lines that had info. For example an RIP message having to do with add_preempt_count+16 But it all ended with Aieee... I have yet to get any VP kernel to run on my x86_64. I suppose I should try just the mm3 or mm4 patches without the VP portion, so that is what I will do. Any other ideas? Thanks for the help! -thewade

20 years, 2 months

[linux-audio-user] [ANN] QjackCtl 0.2.12a released!

by Rui Nuno Capela

Hi, QjackCtl 0.2.12a has been released. Some fix on the audio connections client port sorting is about to justify this immediate release. Thanks goes this time to Fons Adriaensen, for pointing this out. Enjoy! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

20 years, 2 months

[linux-audio-user] live coding of music

by Dave Griffiths

Hi all, With the talk of text based studios (great site btw, Julien) I thought I'd mention http://www.toplap.org which is devoted to the practice of programming music and art live, in front of an audience. Ok, so it's not strictly linux based, but the applications used include Alex Mclean's feedback.pl: http://www.perl.com/pub/a/2004/08/31/livecode.html lots of supercollider, using jitlib: http://swiki.hfbk-hamburg.de:8888/MusicTechnology/566 and some stuff I've written: http://www.pawfal.org/Software/fluxus/ which are all running on linux. The text based nature of the interfaces tend to lead to more flexibility rather than less. The idea is to project the code as part of the performance to allow the audience to see the relationship between the code and the music - and remove the "are they just checking email" syndrome :) ) See also the paper "Live Algorithm Programming and a Temporary Organisation for its Promotion" here: http://www.toplap.org/?Read_Me_Paper cheers! dave

20 years, 2 months

Re: [linux-audio-user] synthesizing a wind effect

by Mark Wilson

> yup, for the classic cheesy analogue wind effect, filter white noise with > multiple LFO modulation on the cutoff - with a hint of resonance and maybe > some reverb or echo. Well, I don't really want *cheesy*. ;-) Maybe I can play around with varying amplitude, since that would sound more natural. >While you're at it, there is nothing like the "deep space" very lowpass > filtered noise sound! Sorry dude, maybe it's the end of the workday, but I don't really get the joke if there is one. I didn't think sound waves travelled in space. Are you talking about background radiation from the BigBang translated into analogous sound? Sorry I'm being dense. Cast not your pearls before swine, especially brain-dead swine. Cheers, Mark ===== -- Seek professional help! Ask a librarian. __________________________________ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail

20 years, 2 months

Re: [linux-audio-user] error report 2.6.9-rc4-mm1-VP-T4

by thewade

> What version of gcc and glibc are you using? What distro? gcc-3.4.1-10 glibc-2.3.3-36 glibc-2.3.3-36 Fedora Core release 2.90 (FC3 Test 1) > afaik T4 is only for x86. That is poopy, but Im patient, at least while I have another possibilty like T3... Except that I dont... I can *almost* build 2.6.9-rc3-mm3-VP-T3 It links almost all the way except for this error: LD .tmp_vmlinux1 ld: BFD 2.15.90.0.3 20040415 assertion fail ../../bfd/linker.c:619 arch/x86_64/kernel/built-in.o(.init.text+0x1d89): In function `late_hpet_init\': : undefined reference to `hpet_alloc\' make: *** [.tmp_vmlinux1] Error 1 My .config file is here: http://www.aproximation.org/application/kernel.config-2.6.9-rc3-mm3-VP-T3 What do you think? Thanks for the help! -thewade

20 years, 2 months

Re: [linux-audio-user] synthesizing a wind effect

by Mark Wilson

>> You might find some stuff in there that you >> can modify to make a sustained wind. (couldn't resist, sorry) Refried Beans: Ingredients 1/2 cup vegetable oil or lard 2 cups cooked Pinto Beans (recipe follows) 2 tablespoons chili powder 1 tablespoon ground cumin 1 teaspoon salt 1/8 teaspoon pepper Instructions Heat lard in 10-inch skillet over medium heat until hot. Add Pinto Beans; cook, stirring occasionally, 5 minutes. Mash beans; stir in chile powder, cumin, salt and pepper. Add more oil to skillet if necessary; cook and stir until a smooth paste forms, about 5 minutes. Garnish with shredded cheese if desired. Yield: 4 servings Pinto Beans 4 cups water 1 pound dried pinto or black beans (about 2 cups) 1 medium onion, chopped (about 1/2 cup) 1/4 cup vegetable oil 2 cloves garlic 1 slice bacon 1 teaspoon salt 1 teaspoon cumin seed Instructions Mix water, beans and onion in 4-quart Dutch oven. Cover and heat to boiling; boil 2 minutes. Remove from heat; let stand 1 hour. Add just enough water to beans to cover. Stir in remaining ingredients. Heat to boiling; reduce heat. Cover and boil gently, stirring occasionally, until beans are very tender, about 2 hours. (Add water during cooking if necessary.) Drain; reserve broth for recipes calling for bean broth. Cover and refrigerate beans and broth separately; use within 10 days. Yield: 8 servings ===== -- Seek professional help! Ask a librarian. _______________________________ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com

20 years, 2 months

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Linux-audio-user October 2004