6 Aug
2009
6 Aug
'09
7:31 a.m.
Grammostola Rosea wrote:
David Robillard wrote:
You know that I completely agree not to recommend Linux real-time audio,
resp. it depends to the hardware and needs. 64 Studio 3.0-beta3 on my
machine is fine out of the box, excepted of the MIDI jitter sent to
external equipment and this wasn't solvable by using different sequencer
timer sources Rui added to Qtractor, just because of my troubles. Making
the USB MIDI device head of all MIDI devices by rtirq or anything else,
e.g. compiling and patching an individual kernel also didn't help for
other installations I tested.
I guess if somebody just want to use Ardour and Rosegarden or Qtractor
by using virtual synth only, this seems to work for most machines out of
the box by using 64 Studio. I guess for the beta there only needs to be
edit /etc/security/limits.conf if somebody wants to use Ardour.
I know a lot of people having the same trouble with JACK I had. JACK1
disconnected clients, but e.g. 64 Studio beta now comes with JACK2 out
of the box, so a newbie don't need to do anything, he won't run into
this trouble. Step by step some problems were solved.
There are some things missing for a Linux studio in the box, that is
available for Mac and Windows, but for people like me, having external
studio equipment this isn't a big problem.
If we don't no the needs of a user and what equipment he has got,
recommending Linux is impossible. For some machines there still seems to
be a problem to use the installers or they got troubles because even the
VESA driver isn't fine, but this isn't a problem just for real-time
audio Linux.
Ralf
OT: In theory the system timer for today's real-time kernels should be
the best solution, that's why Rui first made only this timer available
by Qtractor, but anyway, for my machine it's PCM playback, but even this
one isn't fine.
On Wed, 2009-08-05 at 21:53 +0200, Jens M
Andreasen wrote:
IMO without a ton of effort Jack could, and should, be turned into a
viable default installation audio system (or the bottom layer of such a
system, at least). The desktop guys certainly aren't ever going to get
it right.
The above problem is a very real one as far as people's perception of
GNU/Linux as an audio system. What a mess. We can do better.
-dr
Linux audio is a total mess... a normal human being can't work with pro
audio on Linux, unless he/she spent hours and hours to learn the little
tricks or he has an expert available who helps him...
I spent 5 hours last week to help somebody to get his (pro) audio
working on Linux... He says to his girlfriend, you better spend a 1000
euro's for such a white macbook, then things just work...
I don't know if I can really recommend Linux for pro audio to normal
human beings... at least I should say, you need a lot of time, not easy
give up on things and a lot of patience...
I don't know if there is a connection between LAD and the distro
builders, but it seems there is need for change somewhere...
Kim did the switch (nice article), but he has an other background then
most of the people who works on Desktops and in studios...
From TFA:
--8<----------------------------------
Go to System->Preferences->Sound, click on the Devices tab, and check
out the pulldown menu next to ‘Sound Events’ at the top of the panel.
You will see various acronyms, possibly including cryptic-looking
technologies like OSS, ESD, ALSA, JACK, and Pulse Audio. These acronyms
represent a byzantine tangle of conflicting technologies that over time,
and due to political reasons or backwards compatibility, have ended up
cohabiting with one another. ‘Frankenstein’ might be an accurate
metaphor here.
Thankfully, there is a simpler way, which is the combination of ALSA [a
high-performance, kernel-level audio and MIDI system] and JACK [a system
for creating low-latency audio, MIDI, and sync connections between
applications and computers]. The battle-scarred among us have learned to
ignore all the other audio cruft bolted on to Ubuntu and just use ALSA
and JACK. One can think of the ALSA/JACK stack, the heart of most pro
Linux studios, as the Core Audio of Linux and in my opinion Jack should
be the first thing installed on any musicians laptop. I’d go so far as
to suggest placing it in the Startup Applications so it’s always
running.
-------------------8<--------------------------------------------------