On Sun, 2010-05-16 at 22:49 -0700, Fernando Lopez-Lezcano wrote: > Looks like a different issue. The computer is not locked AFAICT. It was > only rebooted because jackd is unkillable (maybe it could have beeen > killed by kill -9 but that was not tried Sorry, "-9" was tried and jack was still unkillable. At that point I bet the kernel had oopsed or something like that. That would make the whole audio subsystem unavailable until the machine is rebooted, which matches the symptoms. -- Fernando > - even then the > hardware/software might be left in a bad state needing a reboot). > > Only Ardour is hung, most probably because jack itself is hung, most > probably due to a driver vs. hardware problem. > > > HOWEVER -- in testing out a new $5.00 soundcard, I also experienced > > transient lock-ups again with jackd/qjackctl. The one thing that I > > could point to consistently as causing problems: having the wrong > > settings in 'alsamixer', i.e. when one of these is set to "on" you can > > neither play directly through ALSA, and jackd will hang: > > ( http://old.nabble.com/Re:-QXGEdit-(was-Re:-Suzuki-QC1-Qchord-Digital-Songcard-Guitar-)-p28541528.html ) > > ** in alsamixer (F3-playback): > > Item: "Multi Track Rate Locking" set to [Off] > > Item: "Multi Track Rate Reset" set to [Off] > > > > > > Likewise, if the card is locked to the wrong sampling rate , jack may > > not be able to reset it if the above settings are wrong.... To make > > things worse, it seems like some of these settings are "sticky" and > > may require loading/unloading the driver module or rebooting for the > > change to take effect. > > > > > > Similar badness may be going on w/ your soundcard, which has been a > > source of longstanding problems in jack and alsa ... problems that > > often can be remedied via alsamixer > > magic: http://www.google.com/search?hl=en&q=SiS+SI7012 > > +jackd&aq=f&aqi=&aql=&oq=&gs_rfai= > > Those reasons seem more likely. > > We should wait till we hear what comes out of basic tests of command > line invocations of jackd. So far the only test is running ardour which > does not give any feedback on what might be happening. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
