David: I finally succeeded in building FluidSynth under Ubuntu Linux 11.10, and installed it.
The version 1.1.3. works fine on Ubuntu 11.10, Even on a 933 megahertz machine. The sequence that fails to play on version 1.1.4, plays all the way through, even using JACK. Admittedly, there were a fair number of under-runs, but the release level has so many under-runs that it stops, and various voices keep dropping out for measures at a time. This was played with the polyphony configured at 64 (which has been for me, a good way of reducing overhead). None of the voices cut out at all using FluidSynth 1.1.3. By building these Debian packages, it gives me a work-around for using Ubuntu 11.10, but I am concerned with the future direction of FluidSynth, which is unusable in its present released form. It won't even play the demo-music any more, and I can't recommend it. If it would be helpful, I can supply a MIDI file (which can be played using pmidi) which will demonstrate the problem. Simple sequences don't seem to trigger the problem. Thanks for helping me with this work-around, and please let me know how I can help in getting the problem solved I reported solved. Sincerely, Aere Greenway On Mon, 2011-10-31 at 04:52 +0100, David Henningsson wrote: > 2011-10-30 16:08, Aere Greenway skrev: > > David: > > > > I made a determined attempt to do what you asked, but was > > unsuccessful. This is disappointing, since if I had been successful, > > it would have given me a temporary work-around for the problem, while > > the actual problem is being fixed. > > > > On my first attempt to build it, it reported it needed a number of > > packages before it could do the build. > > Oh sorry. Please use the following command: > > sudo apt-get build-dep fluidsynth > > It will download all build dependencies automatically (well, if there > aren't any problems, as pointed out below). > > > > > So I painstakingly installed each of the packages listed. The > > installation of one of them required that qjackctl be removed, which > > is an essential part of the software I use. So I will have to > > un-install the package that required this when/if I am able to > > successfully build fluidsynth. > Hmm. There is some stuff in the packaging that switches between jack1 > and jack2, when you install the development package...I wonder if Debian > got all the packaging pieces right in that process... > > > > > > As I installed these missing packages (using Synaptic Package > > Manager), there were three of them that could not be found (are not > > available) in the Ubuntu distribution: > > > > liblash-dev | ladcca-dev libsndfile-dev > > > > It appears that the first two are an either-or requirement. > > Libsndfile-dev has been replaced by Libsndfile1-dev (so just install > that one instead). With some research it seems like the liblash-dev has > been completely removed [1], so you can do the same edit to debian/control. > > In short, this was not as easy as expected, sorry for putting you > through this, but hopefully you learned something in the progress. :-) > > > > I currently have all of the possible software sources (including > > source packages) enabled. > > > > I attempted to build it again anyway, but it reported the above three > > packages are missing, and would not do the build. > > > > So do you have any ideas of how to get around this problem in building > > the earlier version of fluidsynth on my machine? > > > > > > Thanks, > > > > Aere > > > > > > On Fri, 2011-10-28 at 07:12 +0200, David Henningsson wrote: > >> On 2011-10-28 03:09, Aere Greenway wrote: > >> > David: > >> > > >> > I downloaded the source for the older level of FluidSynth, but didn't > >> > know how to build it. > >> > > >> > But I remembered the file structure in Unix (and Linux), and looked for > >> > the executables in /usr/bin. > >> > > >> > I use qsynth (which uses FluidSynth). On finding it in the Ubuntu 11.04 > >> > system, and in the 11.10 system, I substituted the different executables > >> > in each system, and what I found was surprising, from the symptoms I had > >> > observed. > >> > > >> > First, the old version (from 11.04) of qsynth on Ubuntu 11.10 also > >> > failed. The new version (from 11.10) on 11.04 worked fine. > >> > > >> > I therefore conclude that the cause is in Ubuntu 11.10. > >> > >> Ok, so this is completely wrong. First, FluidSynth's main functionality > >> is in a library (.so) file, so you have not changed FluidSynth by just > >> moving the executables. Second, while ABI breakage is quite rare these > >> days, subtle library differences can still make moving files between > >> distro versions fail. Recompiling the program on the distribution you > >> want to run it on (or in pbuilder, but that's a separate story) is both > >> easier and gives correct results. > >> > >> Here is a mini-howto for how to do that on Ubuntu. Let's assume you have > >> a directory ~/fluidsynth-code, you are in Ubuntu 11.10 and want to > >> compile FluidSynth 1.1.3. First download the source, e g from launchpad > >> by going tohttps://launchpad.net/ubuntu/+source/fluidsynth, click the > >> arrow for the selected version, then click to save the files ending with > >> ".dsc", ".debian.tar.gz" and ".orig.tar.bz2". > >> > >> Then execute the following commands: > >> > >> cd ~/fluidsynth-code > >> dpkg-source -x fluidsynth_1.1.3-3.dsc > >> cd fluidsynth-1.1.3 > >> dpkg-buildpackage -b > >> > >> This will create files named "fluidsynth_1.1.3-3_i386.deb" and > >> "libfluidsynth1_1.1.3-3_i386.deb" in the ~/fluidsynth-code directory. > >> (Or amd64 instead of i386, if that's what your machine is running.) > >> There will also be a libfluidsynth-dev_1.1.3-3_i386.deb", but you don't > >> need that right now. Now run > >> > >> cd .. > >> sudo dpkg -i fluidsynth_1.1.3-3_i386.deb libfluidsynth1_1.1.3-3_i386.deb > >> > >> ...to install you new packages. After that, just restart qsynth or > >> whatever program is using fluidsynth, and test. > >> > >> To return to the distribution supplied version again run "sudo apt-get > >> install fluidsynth libfluidsynth1" > >> > >> > > >> > Perhaps the path-lengths with interrupts locked out are too long. > >> > Perhaps something is causing problems by other means. > >> > > >> > What I notice on 11.10 (also with the old version of qsynth), is that > >> > everything seems fine until I try playing one of my sequences with many > >> > parts, and many simultaneous notes. Within about 30 seconds, things 'go > >> > bad', and stay bad. After that point, even simple sequences play poorly. > >> > Even playing notes on the keyboard is bad. > >> > >> This sounds similar to a bug fixed a while ago, here: > >> http://sourceforge.net/apps/trac/fluidsynth/changeset/435/trunk/fluidsynth/src/synth > >> > >> // David > > > > -- > > > > Sincerely, > > Aere > > > [1] > http://anonscm.debian.org/gitweb/?p=pkg-multimedia/fluidsynth.git;a=blobdiff;f=debian/control;h=13cf37b3e22fdc0a40be62ea1fb9bd0a5254046b;hp=aa490c6b1e3714180419465afaab3cd570f33a93;hb=661c45754a118e9a634d0f2f2b7f95831be85188;hpb=8c57cebd4d3f8e544718073052f19729302c3f94 > > -- Sincerely, Aere
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