Also, it helps to compile PortAudio with --enable-debug-output so that when you run a program that uses it, you'll know you are using your debug builds because tons of output will be spewed to the screen.
On Mon, May 31, 2010 at 3:15 PM, Garth Dahlstrom <ironst...@gmail.com>wrote: > Hi Anders, > > run "ldd" on Mixxx to see where Mixxx is resolving port audio depends > from... and mess with the LD_LIBRARY_PATH? (This assumes that the > interfaces are the same between portaudio versions, otherwise you'll have to > fix the INCLUDEs before compile) > > -G > > On 2010-05-31, at 6:02 PM, Anders Gunnarsson wrote: > > > I just want to check a few things to make sure I got everything right > > regarding this issue. > > > > If I build PortAudio from source. How do I know that this version is > > used before the installed binary? Right now I've used prefix /usr, > > which I guess would replace the binary install. If I use default > > /usr/local would that library override the binary insall in /usr? > > > > I've tried to build PortAudio r1411, but can't say I see any > > difference from any other version. It's kicked from jack with the > > error message below. I test on UbuntuStudio 10.04 64-bit with kernel > > 2.6.31-10-rt, and tried both Mixxx 1.7.1 from download page, and r2407 > > from trunk. > > > > -----jackd output > > subgraph starting at qjackctl timed out (subgraph_wait_fd=16, status > > = 0, state = Running, pollret = 0 revents = 0x0) > > **** alsa_pcm: xrun of at least 0.117 msecs > > bad status (1) for client PortAudio handling event (type = 5) > > ----- > > > > It seems PortAudio is kicked on the first xrun. Jackd is started with > > /usr/bin/jackd -R -Z -dalsa -dhw:1 -r44100 -p256 -n2. I guess -Z > > (nozombies) should make jack keep clients that are too slow, so this > > must be something else. > > > > //Anders > > > > > > 2010/5/29 Albert Santoni <albe...@mixxx.org>: > >> Thanks for the feedback guys! The bounty is up on Pledgie, if anyone > >> wants to add to the pot: > >> > >> http://pledgie.com/campaigns/10964 > >> > >> Thanks again, > >> Albert > >> > >> > >> On Wed, May 26, 2010 at 9:12 PM, Albert Santoni <albe...@mixxx.org> > wrote: > >>> Hi guys, > >>> > >>> It looks like a developer on the PortAudio mailing list has made a > >>> little bit of progress in troubleshooting our dreaded PortAudio xrun > >>> deadlock and thread termination problem: > >>> http://music.columbia.edu/pipermail/portaudio/2010-May/010234.html > >>> > >>> (For some info on this bug, see: > https://bugs.launchpad.net/mixxx/+bug/383431 ) > >>> > >>> As far as we know, this bug affects _every_ user on Ubuntu, and as a > >>> result, on our downloads page we recommend that Ubuntu users install > >>> an older version of PortAudio. Unfortunately, the users that get Mixxx > >>> from Synaptic or the Ubuntu Software Centre won't know that, and get > >>> Mixxx with a deadlock-prone version of PortAudio. > >>> > >>> None of us have ever dug into PortAudio's ALSA code seriously enough > >>> to figure out why the problem happens, probably because we've got > >>> enough bugs directly inside Mixxx to keep us busy. However, this bug > >>> is definitely causing problems for a huge number of people, and is > >>> probably severely affecting the growth of our userbase. We estimate > >>> roughly 50% of our users run Linux, and since most of those people are > >>> running Ubuntu, many people's first impressions of Mixxx are likely > >>> ruined by this bug. Because we get most of our developers from the > >>> Linux community, this bug needs to be fixed if we want to keep > >>> growing. > >>> > >>> None of the PortAudio maintainers have fixed this bug so far, and none > >>> of them are expressing any interest in doing it. Thus, we're faced > >>> with the following decision: Pull our own developer time away from > >>> Mixxx and try to convince one or more of us to fix the bug in > >>> PortAudio, or find a way of getting someone else to fix it. I work on > >>> Mixxx because it's super fun, but my enthusiasm for fixing PortAudio > >>> is very low, even though it's important to us. I think our entire team > >>> feels the same way, otherwise someone would have fixed the bug by now. > >>> > >>> However, I think this is a great opportunity to put our pool of funds > >>> that we've received from donations to good use. I'd like us to propose > >>> a $100 bounty on fixing this bug. It's not a huge amount of money, but > >>> I think it would provide a little bit of incentive for the guy on the > >>> PortAudio mailing list who's already started poking at the problem to > >>> fix it for good. The way I see it is that we have a very important bug > >>> we want fixed, but we lack the resources to do it ourselves. Over the > >>> years, we've received approximately $600 in donations from users who > >>> want to "support and enhance Mixxx development", and I think placing a > >>> $100 bounty on this bug would be an excellent way to do exactly that. > >>> > >>> If anyone would like to share their thoughts or opinions on this, I'm > >>> all ears. The bounty would be contingent on a fix for virtual and pure > >>> ALSA devices being committed to the PortAudio SVN repository and > >>> testing from us that ensures the problem is actually fixed. > >>> > >>> Thank you, > >>> Albert > >>> > >> > >> > ------------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Mixxx-devel mailing list > >> Mixxx-devel@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/mixxx-devel > >> > > > > > > > > -- > > Anders Gunnarsson > > Nergårdsvägen 51 > > 436 36 Askim > > Tel: 031-7804498 > > Mob: 070-3301018 > > E-post: d00g...@gmail.com > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > > Mixxx-devel mailing list > > Mixxx-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/mixxx-devel > >
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