29 Dec
2008
29 Dec
'08
1:24 p.m.
All:
In this maillist I have seen a lot of warning that realtime is broken in
Intrepid. Ok that's understandable if not wonderful :-)
But the question is then if one is running Intrepid what is the proper setup?
I'm looking for something like "The (almost) Perfect Sound Recording Setup
for Ubuntu Intrepid Ibex". This is information I haven't seen and given the
number of questions in reference to Intrepid being asked on this list, one
that might be valuable.
The fundamental requirement is that one is running Intrepid as one's main
system. Replacing Intrepid with Hardy is not an option.
Here are some possibilities that have crossed my mind:
1) Setup a dual boot Hardy/Intrepid system - doable but a pain because of 1)
the need to reboot and 2) the potential loss of access to one's standard home
directory, tools, email and system configuration.
2) Use Intrepid despite not having access to a realtime kernel. In this case
information on realistic expectations on latency, how to best configure Jack to
limit xruns, etc would be very nice. In other words, can Intrepid even be used
as a base for music recording and what are the gotchas (if any)?
3) Run Hardy based studio as a guest OS in vmware or VirtualBox. I don't even
know if this is possible? What does it mean to run a guest OS in a realtime
environment when the host is not? And even if that isn't a problem, how does
one configure the sound system? For instance how do I get the guest system to
recognize my Delta 44 card? Or PulseAudio?
Thanks in advance!
-steve
29 Dec
29 Dec
2:14 p.m.
Stephen Nesbitt wrote:
In this maillist I have seen a lot of warning that
realtime is broken in
Intrepid. Ok that's understandable if not wonderful :-)
I'm using 8.10 on my notebook, an HP G60-125NR. By my experience,
Intrepid is a mixed blessing.
Btw, I'm using the Molnar patched rt-kernel.
But the question is then if one is running Intrepid
what is the proper setup?
I'm looking for something like "The (almost) Perfect Sound Recording Setup
for Ubuntu Intrepid Ibex". This is information I haven't seen and given the
number of questions in reference to Intrepid being asked on this list, one
that might be valuable.
The fundamental requirement is that one is running Intrepid as one's main
system. Replacing Intrepid with Hardy is not an option.
Is this system on a notebook or desktop box ? Perhaps you'll do better
on a desktop machine, but I would not recommend using Intrepid as a
production system on a notebook.
Here are some possibilities that have crossed my
mind:
1) Setup a dual boot Hardy/Intrepid system - doable but a pain because of 1)
the need to reboot and 2) the potential loss of access to one's standard home
directory, tools, email and system configuration.
It's the safest route though.
2) Use Intrepid despite not having access to a
realtime kernel. In this case
information on realistic expectations on latency, how to best configure Jack to
limit xruns, etc would be very nice. In other words, can Intrepid even be used
as a base for music recording and what are the gotchas (if any)?
Frankly, I have so many non-audio related problems with Intrepid that I
can't recommend it at all. See this Ubuntu users forum for more opnions
re: 8.10 :
http://ubuntuforums.org/showthread.php?t=963853
Best,
dp
10:43 p.m.
Is this system on a notebook or desktop box ? Perhaps
you'll do better
on a desktop machine, but I would not recommend using Intrepid as a
production system on a notebook.
If you are planning on using a netbook (which is somewhat cpu
impoverished for heavy DSP stuff, but for the straight recording plus
light to moderate DSP you should be fine) in conjunction with Intrepid I
could not recommend it more. I am running on a MSI Wind with vanilla
kernel and all the eye-candy (compiz) I can get and am yet to get a
single xrun on it with built-in soundcard (haven't tried it with
external yet). Only xruns I've gotten so far were if I exited a JACK app
(e.g. Pd). This is on a 512x2 setting at 44.1KHz (23.2ms).
P.S. Just tried Renoise 2.0 RC that was recently posted here and ran the
demo song. It choked the cpu somewhere towards the end, but with O/C it
ran just fine. (somewhat OT) FWIW, Renoise is truly a beautifully
designed Linux audio app and I sincerely hope we'll get to see more of
this kind of "polish" among the linux audio software.
Ico
2:49 p.m.
On Mon, 29 Dec 2008 09:24:01 -0800
Stephen Nesbitt <stephen_nesbitt(a)alumni.cmc.edu> wrote:
I'm looking for something like "The (almost)
Perfect Sound Recording Setup
for Ubuntu Intrepid Ibex".
. . .
The fundamental requirement is that one is running
Intrepid as one's main
system. Replacing Intrepid with Hardy is not an option.
This in a nutshell is one of the biggest frustrations I have with all the
various distributions of Linux and the desire for certain functionality,
especially since we have yet to see the realtime patches included in the
kernel.
I am pretty agnostic about distributions. I use RHEL and CentOS at work,
I've installed Ubuntu and Fedora on machines for people wanting to get
away from Windows, and played with SuSE, Debian, Knoppix and a few others.
When I was setting up my studio machine, I didn't ask "How do I force the
studio computer to work with my distro of choice?" but "Who has already done
the work of tweaking a distribution for audio work?" If you ask the first
question and Google doesn't reply with a clear answer, then the answer is
probably "nobody" and you're off in uncharted territory. (As with all such
projects, if you undertake it, document and post your findings!!)
My answer at the time was that the work done by Fernando at CCRMA at Stanford
to tweak Fedora for audio was a clear winner, though there have since been
other distros that have equally happy users.
My gut feeling is that if you absolutely require Intrepid for some reason,
you'll have to live with the performance and xrun issues. I can't imagine
that running an OS in any kind of virtual machine will bring any satisfaction,
as you're just adding a level of complexity. You'd be better off starting
with a new OS installation based on one of the distros tweaked for audio.
Good luck!
--
======================================================================
Joe Hartley - UNIX/network Consultant - jh(a)brainiac.com
Without deviation from the norm, "progress" is not possible. - FZappa
3:09 p.m.
Fedora 8 32bit here, and UbuntuStudio Hardy 8.0.4. 64bit both going like a
train, with very few challenges.
If you don't really need the latest and greatest, then, well, if it ain't
broke.....
Similar jack/alsa setup on both (Jackmp dbus version, latest svn a week ago,
Alsa 1.0.17, and a couple of important lib updates, which i compiled from
source.)
Dave Phillips, the chap to blame to for getting me into linux, (O wise one
:) ) will tell you that i'm a serial linux maniac of some 14 months from
scratch, with no coding skills, fierce enthusiasm, and relentlessly poor
humour, all of which are 'human' libs i've 'compiled' to get the above
dual
boots working well,and importantly, successfully.
I've avoided the intrepid up date for the RT kernel challenges, and haven't
lost anything at all by sticking with releases one step removed from
current. I respectuflly suggest you might consider the same, with the
notable exception of Jack, where the latest version, hot out of the oven, is
a better bet than 0.109. something, which comes as the default with ubuntu.
0.109 came about in a period of transition for Jack, as the devs got the BIG
spanners and power tools out, and did some serious work. (which has come to
fruit for us appreciative users in the latest release.)
Good luck.
Alex Stone.
On Mon, Dec 29, 2008 at 9:48 PM, Joe Hartley <jh(a)brainiac.com> wrote:
On Mon, 29 Dec 2008 09:24:01 -0800
Stephen Nesbitt <stephen_nesbitt(a)alumni.cmc.edu> wrote:
I'm looking for something like "The
(almost) Perfect Sound Recording
Setup
for Ubuntu Intrepid Ibex".
. . .
The fundamental requirement is that one is
running Intrepid as one's main
system. Replacing Intrepid with Hardy is not an option.
This in a nutshell is one of the biggest frustrations I have with all the
various distributions of Linux and the desire for certain functionality,
especially since we have yet to see the realtime patches included in the
kernel.
I am pretty agnostic about distributions. I use RHEL and CentOS at work,
I've installed Ubuntu and Fedora on machines for people wanting to get
away from Windows, and played with SuSE, Debian, Knoppix and a few others.
When I was setting up my studio machine, I didn't ask "How do I force the
studio computer to work with my distro of choice?" but "Who has already
done
the work of tweaking a distribution for audio work?" If you ask the first
question and Google doesn't reply with a clear answer, then the answer is
probably "nobody" and you're off in uncharted territory. (As with all
such
projects, if you undertake it, document and post your findings!!)
My answer at the time was that the work done by Fernando at CCRMA at
Stanford
to tweak Fedora for audio was a clear winner, though there have since been
other distros that have equally happy users.
My gut feeling is that if you absolutely require Intrepid for some reason,
you'll have to live with the performance and xrun issues. I can't imagine
that running an OS in any kind of virtual machine will bring any
satisfaction,
as you're just adding a level of complexity. You'd be better off starting
with a new OS installation based on one of the distros tweaked for audio.
Good luck!
--
======================================================================
Joe Hartley - UNIX/network Consultant - jh(a)brainiac.com
Without deviation from the norm, "progress" is not possible. - FZappa
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
3:20 p.m.
I've avoided the intrepid up date for the RT kernel
challenges, and haven't lost anything at all by sticking with >releases one step
removed from current. I respectuflly suggest you might consider the same, with the notable
>exception of Jack, where the latest version, hot out of the oven, is a better bet than
0.109. something, which >comes as the default with ubuntu. 0.109 came about in a period
of transition for Jack, as the devs got the BIG >spanners and power tools out, and did
some serious work. (which has come to fruit for us appreciative users in >the latest
release.)
Hmm wasn't aware of this, does this fix the alsa jack plugin crashing jackd?
If I were to build alsa and jack from source, in what order should they be done?
Doesn't jack build against alsa, and alsa against jack for the jack plugin?
I'll be doing this with Debian Lenny (testing).
--
aRDy Music and Rick Dicaire present:
http://www.ardynet.com
http://www.ardynet.com:9000/ardymusic.ogg.m3u
3:27 p.m.
On Mon, Dec 29, 2008 at 11:24 AM, Stephen Nesbitt
<stephen_nesbitt(a)alumni.cmc.edu> wrote:
All:
In this maillist I have seen a lot of warning that realtime is broken in
Intrepid. Ok that's understandable if not wonderful :-)
But the question is then if one is running Intrepid what is the proper setup?
I'm looking for something like "The (almost) Perfect Sound Recording Setup
for Ubuntu Intrepid Ibex". This is information I haven't seen and given the
number of questions in reference to Intrepid being asked on this list, one
that might be valuable.
The fundamental requirement is that one is running Intrepid as one's main
system. Replacing Intrepid with Hardy is not an option.
Here are some possibilities that have crossed my mind:
1) Setup a dual boot Hardy/Intrepid system - doable but a pain because of 1)
the need to reboot and 2) the potential loss of access to one's standard home
directory, tools, email and system configuration.
2) Use Intrepid despite not having access to a realtime kernel. In this case
information on realistic expectations on latency, how to best configure Jack to
limit xruns, etc would be very nice. In other words, can Intrepid even be used
as a base for music recording and what are the gotchas (if any)?
I'm stuck on non-realtime Intrepid (my motherboard + embedded Intel
graphics card are new enough to require 2.6.27), so I can give you one
data point: with a USB soundcard and -n 3 -p 512, I get at most a few
xruns per hour. Disabling cpu frequency scaling helped a lot, as has
avoiding high cpu usage. It's not good enough for click-free
recording, but it's reasonable for live performance.
(I tried the ubuntu 2.6.27-rt package, but it was broken for me in
many ways. YMMV of course.)
3) Run Hardy based studio as a guest OS in vmware or
VirtualBox. I don't even
know if this is possible? What does it mean to run a guest OS in a realtime
environment when the host is not? And even if that isn't a problem, how does
one configure the sound system? For instance how do I get the guest system to
recognize my Delta 44 card? Or PulseAudio?
Thanks in advance!
-steve
--
Jacob Lee
artdent(a)gmail.com
5601
days inactive
5601
days old
linux-audio-user@lists.linuxaudio.org
6 comments
7 participants
participants (7)
-
alex stone -
Dave Phillips -
Ivica Ico Bukvic -
Jacob Lee -
Joe Hartley -
R Dicaire -
Stephen Nesbitt