Linux-audio-user July 2004

linux-audio-user@lists.linuxaudio.org

172 participants
206 discussions

[linux-audio-user] Re: linux-audio-user Digest, Vol 10, Issue 101

by Kjetil Svalastog Matheussen

Florin Andrei: On Fri, 2004-07-23 at 06:55, Dave Griffiths wrote: >> Before the gig I went through my cron jobs commenting them all out just in >> case. slocate is particually annoying - I guess most people disable this >> anyway - even with jack using such a large buffer, all the disk access caused >> problems. > >slocate is always among the first packages i remove after installing a >system. Have no use for it, and it is very annoying. I do a more general approach; turn off all cron-jobs if anyone is logged in. After installation, this script is run: " if grep "run-parts " >/dev/null /etc/crontab ; then cp -f /etc/crontab /etc/crontab.org sed s/run-parts\ /run-parts2\ / </etc/crontab.org >/etc/crontab echo "crontab changed" fi if grep "run-parts " >/dev/null /etc/anacrontab ; then cp -f /etc/anacrontab /etc/anacrontab.org sed s/run-parts\ /run-parts2\ / </etc/anacrontab.org >/etc/anacrontab echo "anacrontab changed" fi " and /usr/bin/run-parts2 looks like this: " #!/bin/bash if ! ps -A |grep ssh-agent ; then run-parts $@ fi " At least this works for fedora core 1. Don't know about other distributions. --

20 years, 5 months

[linux-audio-user] it's so quiet...

by Russell Hanaghan

Did every one take a vacation? It's so quiet you can hear a fish drop! :)

20 years, 5 months

[linux-audio-user] OT: another piece of gear

by Aaron Trumm

hi again - another piece of gear somebody on these lists might want: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3738108120&ssPageName=ADM E:L:DS:US:8 see ya!

20 years, 5 months

[linux-audio-user] APIC is bad?

by Florin Andrei

I rebuilt the latest Fedora 2 kernel update to enable preempt and IO-APIC. I'm not yet sure about preempt, but IO-APIC has been acting weird. It gave me more interrupts (up to 21 instead of 15), but the devices were distributed suboptimal. Without APIC, the nvidia module was alone on its own interrupt, the EMU10K1 was alone, the ide and eth modules were on separate interrupts, etc. Quite ok. With IO-APIC, nvidia, EMU10K1 and bttv were on the same interrupt, ide2, ide3 and eth0 were on the same interrupt. Instead of messing with the kernel again, i just rebooted with the "noapic" parameter and now the interrupts are looking good again. BTW, anyone has any measurements on how bad it is to put essential devices on the same interrupt? (in terms of xruns) -- Florin Andrei http://florin.myip.org/

20 years, 5 months

[linux-audio-user] 1. Re: Good Studio Hearphones (Florin Andrei)

by simon canning

I'd say my beyer dynamic dt100's are still the best thing since sliced bread. Great for getting through insomnia driven editing sessions.

20 years, 5 months

Re: [linux-audio-user] CPU clock - beware - Solved for now?

by Matthew Barber

->I run almost the same setup, except I have a Asus A7N8X mobo with the Athlon 2500 overclocked to 2100Mhz @ 200Mhz fsb on Fedora with the CCRMA 2.4.26-1.ll kernel. The problem I always run into is that my setup will not run the low latency (ll) "athlon" kernel without locking up like you described. I have found that if I manually install the i686 kernel and ALSA from the CCRMA rpms, it will boot just fine and is very stable. In other words don't use apt-get to install the kernel and ALSA because it will always pick the Athlon versions. I haven't found any problems using apt-get after the kernel,alsa rpm installation, although when a new kernel comes out you do have to install it manually.<- Thanks to everyone who responded. My friend Kevin Ernste pointed me to one of many forum threads which talk about using "noapic nolapic" (hey, that's a good rhyme!) as kernel arguments for the nforce2 chipset. Like this one: http://www.linuxquestions.org/questions/showthread.php?s=&postid=1035056#po… I did that early this morning (actually, I just passed nolapic so far), and have not had a single problem at the normal clock speed, throwing everything I could at it. I had qjackctl open running alsaplayer into a simple jack-rack amplifier into freqtweak into a rezound record, while burning a CD, encoding an mp3, and playing with Celestia. Aside from Celestia and the mp3 encoder being fairly slow and the cpu temp reaching 41C during that episode, everything seems pretty solid. Thanks, Matt

20 years, 5 months

[linux-audio-user] Mellotron

by Emiliano Grilli

Hello guys, I'm writing here because I have a large sample of a Mellotron that I have not time to convert to pat or sf2. Inside there are the 3 instruments of a real Mellotron sampled note by note (I guess). The author of the samples, a friend of mine, when asked said that we can use it like we did with the rhodes one that he made (http://www.yeeking.net/index.php?location=Sound%20Fonts), making a GPL sound font or gus patch (he's asking only a mention of his website on the README) Since the sample is 23 Mb, and I don't have so much bandwidth, I can make it available on my home pc to the ones that are really interested. You can reach me via email or on irc on #agnula #lad or #hydrogen (nick "emillo") Ciao -- Emiliano Grilli Linux user #209089 http://www.emillo.net

20 years, 5 months

Re: [linux-audio-user] CPU clock - beware

by Matthew Barber

->Something just hit me while reading this post again, check the CPU speed jumper on your mobo. It needs to be at 133/166mhz for stock operation or 100mhz if your trying to run at 200mhz fsb (overclocking)<- Don't think so. I have set the clock to 200mhz in the BIOS. When I removed the clock jumper (which is how you set it to 100mhz) it won't go any higher even if you tell it to in the BIOS. The BIOS goes up in single mhz to 300. M

20 years, 5 months

Re: [linux-audio-user] Good Studio Hearphones

by philicorda

Hiya. I use Beyer DT150 headphones. They are solid, repairable, and have a better bass end than the old DT100. They are closed, but this can be a good thing as you get less spill from the headphones onto the mic than with open cans+less level is needed. You can blow them up, but it's pretty hard, and the drivers are not too expensive to replace. The old DT100 was a bit of an industry standard, and the DT150 looks likely to follow in it's footsteps.

20 years, 5 months

[linux-audio-user] CPU clock - beware

by Matthew Barber

This might not be an appropriate place to ask this question, but I've gotten help here before on a number of things... So I have an Athlon XP 2500+ and a DFI motherboard with the nvidia nforce2 chipset. I have run it for almost a year, and it has been rock solid under linux (not as much under Windows), red hat 9 and planet ccrma kernel/drivers/software -- 2.4.26-1.ll.rh90.ccrma. RME hdsp multiface, and um... 2x512MB Crucial unbuffered DDR400. Great, except - I have never been able to set the appropriate bus clock in the BIOS without linux becoming COMPLETELY unstable. If I set it to the published specs (166Mhz bus, x11 multiplier == 1.83Ghz), I usually can't even get through the linux boot process; if it makes it through the boot process, it will usually hang at the NVIDIA screen, or at the signin... if it makes it past that, I can sign in, do a few things in a shell, but then after about 2 minutes at most, the system freezes. And we're talking about a hard freeze - no ctl-alt-del, no ctl-alt-backspace, no response at all. Windows runs as fine as it ever has. The only way I can get linux to run stably is to underclock the system at 100Mhz, which puts my CPU clock at a wimpy 1.1Ghz. Setting the multiplier higher than 11 but maintaining the 100Mhz bus clock results in the same problem. I thought for a moment that the memory clock and the bus clock weren't syncing, so I set them in 1:1 ratio - linux still hates it at any frequency. You can lock AGP at 66Mhz, still nothing doing. This is a board and proc combo that has been renowned for mega overclocking - I shouldn't have to underclock it to have things run right. Windows runs fine so I'm wondering if it's not a problem in my kernel or distro rather than the bios or hardware. I have not as yet tried to boot another kernel, but I will tomorrow when my mind is clear (I just started trying to fix it today, and I'm weary). Any ideas about it, or about where I could read to fix it? Thanks, Matt

20 years, 5 months

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Linux-audio-user July 2004