On Wed, Jan 27, 2010 at 10:17 AM, Grant <[email protected]> wrote: >>>> <SNIP> >>>>> >>>>> But in the end, there's really no way to know, right? From what I >>>>> gather, jack can add another buffer and report on it, but it's the >>>>> sound card buffer that determines whether there are problems or not, >>>>> right? >>>> >>>> No, I think Jack does know. >>>> >>>> In non-Jack apps the application pumps out data. If the buffers >>>> overflow or run empty it's just a 'system problem' and the system has >>>> failed. >>>> >>>> In Jack apps all audio is moved by Jack. All Jack apps are callback >>>> based. Jack itself issues a demand for data from the application, then >>>> if the application supplies it then everything works correctly. If the >>>> app doesn't supply the data then we know where the problem is and we >>>> can fix it. >>> >>> Here's how I understand it. In a system without jack, there is >>> communication between the system and the sound card. With jack, there >>> is communication between the system and jack, and also between jack >>> and the sound card. It sounds like jack can report on problems with >>> communication between the system and jack, but we are still left in >>> the dark as far as communication problems between jack and the sound >>> card. >>> >> >> I don't think so. Jack will report if it had trouble delivering the >> data to the card. It's just another xrun. > > Is that enough information to be sure the card's buffer never runs dry? >
I believe it is. Probably you could address really specific questions to the implementers for more confirmation, but I'm operating as if it is. >> <SNIP> >>> >>> Was it the Asus motherboard? Did it take anything else out with it? >>> >> >> Asus A8N-E. The crash took out the motherboard, the power supply and >> possibly a disk drive. At least I cannot get the drive to spin up and >> it was a new SATA drive that was the main system drive before the >> machine died. > > I'm really sorry to hear this. I hope you were able to resuscitate > the drive. Did you choose a reliable motherboard to replace the Asus? > If so, I'm interested to hear how you made a reliability > determination. How's temperature in the case? > > - Grant So far the drive is apparently really dead. I haven't done anything more. I figure I'll contact WD but it's hard to blame it on them. The power supply seems to have been the culprit. It took out the motherboard and a cheap ATI VGA also so almost everything in the box seems pretty dead. I don't know yet whether my HDSP9652 was harmed, nor have I tested my TI 1394 card, but at least the new system recognizes them and loads drivers so one of these days I'll hopefully get on top of that. I have more pressing issues right now so those will have to wait a while. Thanks for the concerns and interest though. Cheers, Mark
