After reading your mail again, I noticed a few things more, see in the text. On Monday 22 January 2007 22:18, ronan mcallister wrote:> Dominique,> > I'm looking into the kernels/distro's you suggested -- in the> meantime, I did startup meterbridge, when using Ardour I to play a WAV> file, it's apparent the output level must be clipping the input to> ardour or to my alsa output (pcm) as the meterbridge meters peg.> > Can you tell me what tool to use to playback a WAV file outside of> Ardour -- a tool which is JACK-aware I can use to bypass my alsa_pcm> capture_1 and capture_2 inputs which apparently are inpust to Ardour> when you preview a wav file? Ardour is so complex, I really just need> to playback a WAV file (tried aplay but it says my /dev/dsp is busy --> I guess Jack uses it?). Several things here:- try with something simpler than Ardour (as you suggest) to check first ALSA, then JACK. Since Jack runs on ALSA you first need to make sure ALSA runs without problems. Setup Alsaplayer on your pc, and make sure you have a version that can interface to ALSA and JACK. If not available, compile it yourself with the needed config switches. These are noted in the file INSTALL or README. Play a wave file with ALSA "alsaplayer -i gtk". (default uses Alsa) If that works, start JACK and try with "alsaplayer -i gtk -d jack" What I find strange is the complaint about /dev/dsp. This means the app is trying to use OSS or oss-emulation under alsa. So are you sure that alsa is running? How do you start JACK? I guess you use Suse, but Suse defaults to aRts sound deamon. Is that one disabled? If you use Qjackctl, you get a nice interface where you see your connections, can set samplerate etc. It also contains an option to shutdown the aRts sound deamon if it is running. > > Any general troubleshooting techniques I can use before I reimage this> PC with a different kernel? I'm using SUSE 10.1 now, and I think this> is realtime compatable. Additionally I've got a PentiumD processor,> so I think (hope) the 64-bit audio kernels would work fine. No need to reimage your pc. You can use several kernels on the same machine and select at startup which one to use. Install/compile a new kernel, put it in the correct place in the /boot directory and add a line to Grub (IIRC Suse uses Grub). Check the documentation of your distro (or the distro forum about that as the details vary) No problem with 64bit kernels, using one for 1.5 years with Jack and Ardour. But this works best if you have the kernel, alsa, jack and application as 64bit versions. > > Maybe this is an alsa issue. I do know the WAV file plays fine using> aplay (without jackd running) -- I can't seem to pipe (or route) this> WAV file into anything and have it come out undistorted.> Maybe it is, that's why you need to clear Alsa before tackling Jack. > Thank you> Ronan> > > > > On 1/19/07, Dominique Michel <dominique.michel@xxxxxxxxxxxx> wrote:> > Le Fri, 19 Jan 2007 08:28:17 -0800,> > "ronan mcallister" <bass.woofer@xxxxxxxxx> a écrit :> >> > > What Linux/distro do you use?> > >> > > Since I posted this I've been experiencing "..But you'll pay dearly> > > for it" with an issue I have on Suse 10.1 and my inbuilt Intel 82801G> > > ICH7 multichannel sound card. My hope was to install and run up Linux> > > and test the inbuilt audio software, but I can't seem to get even the> > > most basic features to work -- I've posted elsewhere, but this group> > > seems to be the most active. I think the problem is not Alsa but Jack> > > as I can playback wav's and capture audio through Alsa (eg aplay,> > > amarok), but anything I playback through Jack connections (Ardour etc)> > > is distorted - noisy - clicky and no answer found yet. I'm not sure> > > how to troubleshoot Jack.> > >> > Suse standard kernel is not optimised for professional audio work and you> > will> > get huge sound latency with jack, but yYou can use a kernel from the jacklab> > http://jacklab.net/> >> > They are some pro-audio distribution as 64 studio http://64studio.com/,> > Musix, or even gentoo with the proaudio overlay> > http://proaudio.tuxfamily.org/wiki/index.php?title=Main_Page> >> > The advantage of those distribution is at you will get not only a realtime> > kernel (needed to get the most of jack), but a fully optimised system for> > audio> > work. 64 studio and musix are debian testing based and incorporate many> > audio> > applications not in debian, and you can install all the debian softwares> > from> > debian testing and unstable (as fvwm-crystal, I am tired of kde, I hate> > gnome> > focus policy and fvwm is just so fast and so incredibly flexible). Don't be> > afraid about the word testing, the stability of debian testing is like a> > distribution as suse.> >> > The advantage of gentoo is its documentation and flexibility (and it is> > outstandingly stable if you just follow the handbook (it mean: don't mess> > with the CFLAGS, just use the ones in the doc)), but it will need more> > work to setup. Another advantage is on the long run: it is no dependency> > hell> > when upgrading a gentoo system, only some time used by portage to compile> > the> > programs.> >> > Actually, I use mostly gentoo, and also 64studio when I want to try> > something> > else. But I really prefer gentoo even if I recognize at 64 studio is a> > really> > great audio distribution (it is the successor of agnula/demudi and of the> > same> > quality, maybe even better)> >> > About jack and distortion, be aware at it is easy to go in clipping when> > mixing> > a few sound channels or using effects. You must can use a vu-meter as> > meterbridge with the dpm option:> > meterbridge -t dpm in_1 in_2> > or even better, jack_mixer http://home.gna.org/jackmixer> >> > Ciao,> > Dominique> >> > -------------------------------------------------------------------------> > Take Surveys. Earn Cash. Influence the Future of IT> > Join SourceForge.net's Techsay panel and you'll get the chance to share your> > opinions on IT & business topics through brief surveys - and earn cash> > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> > _______________________________________________> > Alsa-user mailing list> > Alsa-user@xxxxxxxxxxxxxxxxxxxxx> > https://lists.sourceforge.net/lists/listinfo/alsa-user> >> > -------------------------------------------------------------------------> Take Surveys. Earn Cash. Influence the Future of IT> Join SourceForge.net's Techsay panel and you'll get the chance to share your> opinions on IT & business topics through brief surveys - and earn cash> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> _______________________________________________> Alsa-user mailing list> Alsa-user@xxxxxxxxxxxxxxxxxxxxx> https://lists.sourceforge.net/lists/listinfo/alsa-user> > -- You're never alone when you hear voices inside your head. -------------------------------------------------------------------------Take Surveys. Earn Cash. Influence the Future of ITJoin SourceForge.net's Techsay panel and you'll get the chance to share youropinions on IT & business topics through brief surveys - and earn cashhttp://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV_______________________________________________Alsa-user mailing listAlsa-user@xxxxxxxxxxxxxxxxxxxxxxxxxx://lists.sourceforge.net/lists/listinfo/alsa-user
