[LAU] Literally Odd Behavior: Linux Mint 17 (lowlat) with hdsp9652

Christoph Kuhr christoph.kuhr at web.de
Mon Nov 17 11:38:05 UTC 2014


Hi *,

I built a recording machine. Embedded Mainboard with Intel Atom, 4GB Ram, 128GB SSD, 80W PSU and a RME HDSP9652. Running Linux Mint 17 with KX Studio low latency kernel (dont know which version right now).

The first time recording 24Channels at 24/48k went flawless.
The second time I thought my ADCs were broken. Scrambled and distorted I/Os in hdspmixer/ardour3. After restarting, it would not boot anything. Took it from the Studio home. At home it was  working fine again.
The third time everything flawless.
The fourth time: see second time.

Ok, calling it an odd behavior is true in two sences. But I refuse to believe, it is only working in odd times. :-D

I experienced something similar, when the PCI connector wasnt mounted properly. But this time it is!
Double checked!

What might cause such behavior?
PSU to small? 
Intel CPU stupid?
VooDoo?

I am a little helpless...

Best regards,
Ck



Am 26. Oktober 2014 13:00:01 MEZ, schrieb linux-audio-user-request at lists.linuxaudio.org:
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>Today's Topics:
>
>   1. Re: Music made with linux: a773/sportin' life (Will Godfrey)
>   2. Re: zita-njbridge > zita-nabridge ? (Carlos sanchiavedraz)
>   3. Re: A survey if you don't mind - results (Will Godfrey)
>   4. Re: A survey if you don't mind - results (Carlos sanchiavedraz)
>   5. Re: A survey if you don't mind - results (Robin Gareus)
>   6. Re: A survey if you don't mind - results (Len Ovens)
>   7. Re: A survey if you don't mind - results (Will J Godfrey)
>   8. Re: A survey if you don't mind - results (Len Ovens)
>   9. Re: A survey if you don't mind - results (Brett McCoy)
>  10. Re: zita-njbridge > zita-nabridge ? (Jeremy Jongepier)
>  11. Re: A survey if you don't mind - results (Ralf Mardorf)
>  12. Re: zita-njbridge > zita-nabridge ? (Rapha?l Mouneyres)
>  13. recordmydesktop stereo (Atte)
>  14. Re: recordmydesktop stereo (Conor Mc Cormack)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Sat, 25 Oct 2014 16:02:29 +0100
>From: Will Godfrey <willgodfrey at musically.me.uk>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] Music made with linux: a773/sportin' life
>Message-ID: <20141025160229.66407bf0 at debian>
>Content-Type: text/plain; charset=US-ASCII
>
>On Fri, 24 Oct 2014 20:24:15 +0200
>Atte <atte at youmail.dk> wrote:
>
>> Hi
>> 
>> New track out, hope you enjoy!
>> 
>> http://soundcloud.com/a773/sportin-life
>> 
>> In case you wanna download and/or support:
>> http://a773.bandcamp.com/track/sportin-life
>> 
>Really enjoyed this bright lively composition. lots of interesting
>variations,
>but a consistent thread all through.
>
>-- 
>Will J Godfrey
>http://www.musically.me.uk
>Say you have a poem and I have a tune.
>Exchange them and we can both have a poem, a tune, and a song.
>
>
>------------------------------
>
>Message: 2
>Date: Sat, 25 Oct 2014 17:33:36 +0200
>From: Carlos sanchiavedraz <csanchezgs at gmail.com>
>To: raf <rmouneyres at gmail.com>
>Cc: linux-audio-user Users <linux-audio-user at lists.linuxaudio.org>
>Subject: Re: [LAU] zita-njbridge > zita-nabridge ?
>Message-ID:
>	<CA+O6s5ziGUZ43TcLCzXBytGXAutk+FtQVEi0PEhd5NtUgNmXJA at mail.gmail.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>2014-10-24 21:10 GMT+02:00 raf <rmouneyres at gmail.com>:
>
>>
>> >> I have a situation in mind : in a LAN a central computer running
>jack
>> server with a lot of audio I/O, and lightweight clients with stereo
>I/O.
>> >> I'd like those clients to be able to send a receive 2 channels of
>audio
>> to the central jack server, lowest latency possible.
>> >>
>> >> With the zita-njbridge and jack server running on the lightweight
>> clients, it works, but considering i don't need the jack server on
>the
>> lightweight clients (no effect plugins, no routing, no synths...)
>could a
>> zita-nabridge exist to capture/override the streams from the client's
>> embedded alsa device ?
>> >
>> > In theory such a thing could exist, it would be an ALSA device
>> > that receives and/or sends audio using the njbridge protocol.
>> > No resampling would be needed as it would be the 'master'
>> > device on the local system.
>> >
>> > In practice that is not very likely to happen, the reason
>> > being that interfacing to Jack is so much more easy than
>> > writing an ALSA driver. Also, passing via Jack does not
>> > add any latency, and in most cases users will want the
>> > flexibility it provides.
>>
>> thanks for the answer, I was expecting this, but hadn't measures the
>> difference between the jack client and alsa driver.
>> So now it looks like I need to learn how to cross compile jack for
>various
>> ARM devices to have it on the lightweight clients :/
>>
>> Rapha?l
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>>
>
>I've thought about a similar idea sometime in the past: A distributed
>audio
>network with thin clients/raspberrys for a home studio or distributed
>via
>some network. I'd be interested in following whatever progress you
>make.
>
>About that of "distributed band" I red a little about programs to jam
>via
>internet: Netjack, Ninjam, Midikit.
>
>-- 
>
>C. sanchiavedraZ:
>* NEW / NUEVO:     www.sanchiavedraZ.com
>* Musix GNU+Linux: www.musix.es
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>------------------------------
>
>Message: 3
>Date: Sat, 25 Oct 2014 16:55:16 +0100
>From: Will Godfrey <willgodfrey at musically.me.uk>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID: <20141025165516.7378b407 at debian>
>Content-Type: text/plain; charset=US-ASCII
>
>OK final results. I've had to make the following adjustments to the
>figures.
>
>One respondent entered 'both' in the 'other' category so I've
>subtracted them
>from that and added them in the 'either' group.
>
>Another respondent gave hardware names for both source and destination,
>so I
>think they rather missed the point, and I took them out of the totals.
>
>In order to then get a nice easy figure of 100, I asked a friend who
>hadn't
>taken part, and he came down firmly in the 'either' camp.
>
>There was a non respondent on the MIDI question so I've lumped them in
>with the
>'other' crowd as a 'no MIDI'.
>
>So we have:
>
>Audio
>ALSA    6%
>JACK   74%
>Either 18%
>Other   2% (both referring to Alsa, Jack and Pulse)
>
>
>MIDI
>ALSA   23%
>JACK   26%
>Either 44%
>Other   7% ( 6 didn't use MIDI and the 7th mentioned a2j)
>
>
>From this I think we can conclude that direct use of ALSA is far from
>dead yet,
>and for MIDI it's neck and neck with jack. I hope this will be useful
>to all
>the Linux audio devs out there.
>
>If I can remember, I might try this again in a years time.
>
>-- 
>Will J Godfrey
>http://www.musically.me.uk
>Say you have a poem and I have a tune.
>Exchange them and we can both have a poem, a tune, and a song.
>
>
>------------------------------
>
>Message: 4
>Date: Sat, 25 Oct 2014 18:13:26 +0200
>From: Carlos sanchiavedraz <csanchezgs at gmail.com>
>To: Will Godfrey <willgodfrey at musically.me.uk>
>Cc: linux-audio-user <linux-audio-user at lists.linuxaudio.org>
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID:
>	<CA+O6s5weyvoixFBp3-00fg=yts3VHf2rcqnPNt0yOvggkCVRew at mail.gmail.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Great Will, I'm sure this information is valuable in many ways, at
>least to
>take the pulse of the situation nowadays.
>
>
>2014-10-25 17:55 GMT+02:00 Will Godfrey <willgodfrey at musically.me.uk>:
>
>> OK final results. I've had to make the following adjustments to the
>> figures.
>>
>> One respondent entered 'both' in the 'other' category so I've
>subtracted
>> them
>> from that and added them in the 'either' group.
>>
>> Another respondent gave hardware names for both source and
>destination, so
>> I
>> think they rather missed the point, and I took them out of the
>totals.
>>
>> In order to then get a nice easy figure of 100, I asked a friend who
>hadn't
>> taken part, and he came down firmly in the 'either' camp.
>>
>> There was a non respondent on the MIDI question so I've lumped them
>in
>> with the
>> 'other' crowd as a 'no MIDI'.
>>
>> So we have:
>>
>> Audio
>> ALSA    6%
>> JACK   74%
>> Either 18%
>> Other   2% (both referring to Alsa, Jack and Pulse)
>>
>>
>> MIDI
>> ALSA   23%
>> JACK   26%
>> Either 44%
>> Other   7% ( 6 didn't use MIDI and the 7th mentioned a2j)
>>
>>
>> From this I think we can conclude that direct use of ALSA is far from
>dead
>> yet,
>> and for MIDI it's neck and neck with jack. I hope this will be useful
>to
>> all
>> the Linux audio devs out there.
>>
>> If I can remember, I might try this again in a years time.
>>
>> --
>> Will J Godfrey
>> http://www.musically.me.uk
>> Say you have a poem and I have a tune.
>> Exchange them and we can both have a poem, a tune, and a song.
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>>
>
>
>
>-- 
>
>C. sanchiavedraZ:
>* NEW / NUEVO:     www.sanchiavedraZ.com
>* Musix GNU+Linux: www.musix.es
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>------------------------------
>
>Message: 5
>Date: Sat, 25 Oct 2014 18:26:10 +0200
>From: Robin Gareus <robin at gareus.org>
>To: Will Godfrey <willgodfrey at musically.me.uk>
>Cc: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID: <544BCF22.40904 at gareus.org>
>Content-Type: text/plain; charset=ISO-8859-1
>
>On 10/25/2014 05:55 PM, Will Godfrey wrote:
>> OK final results. I've had to make the following adjustments to the
>figures.
>[..]
>
>> So we have:
>> 
>> Audio
>> ALSA    6%
>> JACK   74%
>> Either 18%
>> Other   2% (both referring to Alsa, Jack and Pulse)
>> 
>> 
>> MIDI
>> ALSA   23%
>> JACK   26%
>> Either 44%
>> Other   7% ( 6 didn't use MIDI and the 7th mentioned a2j)
>>
>
>How many votes have there been in total? Is it a significant part of
>the
>community that does not correlate with Applications? (eg qtractor has
>no
>jack-midi support, or ardour3 only jack-midi support, skype on linux
>only offers pulseaudio)
>
>General the choice of API is not made by the user, but dictated by the
>application(s) a user uses. Hence I don't see how this survey is
>meaningful by itself. Still interesting though.
>
>[..]
>> From this I think we can conclude that direct use of ALSA is far from
>> dead yet
>
>You can not *conclude* that just from the results presented. That's not
>how statistics works, but well, it's good enough for the marketing
>dept.
>nonetheless :)
>
>
>> If I can remember, I might try this again in a years time. 
>
>If so, the please consider leaving the survey run longer. At least a
>week, best a month.
>
>I just read your call for participation only to find this result email
>a
>bit further down in my Inbox. Though that's my fault for not keeping up
>LAU on a on day-by-day basis.
>
>Cheers!
>robin
>
>
>------------------------------
>
>Message: 6
>Date: Sat, 25 Oct 2014 09:35:58 -0700 (PDT)
>From: Len Ovens <len at ovenwerks.net>
>To: linux-audio-user <linux-audio-user at lists.linuxaudio.org>
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID: <alpine.DEB.2.10.1410250858230.2497 at scott.cbbs.org>
>Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
>
>On Sat, 25 Oct 2014, Will Godfrey wrote:
>
>> OK final results. I've had to make the following adjustments to the
>figures.
>>
>> So we have:
>>
>> Audio
>> ALSA    6%
>> JACK   74%
>> Either 18%
>> Other   2% (both referring to Alsa, Jack and Pulse)
>>
>>
>> MIDI
>> ALSA   23%
>> JACK   26%
>> Either 44%
>> Other   7% ( 6 didn't use MIDI and the 7th mentioned a2j)
>>
>>
>>> From this I think we can conclude that direct use of ALSA is far
>from dead yet,
>> and for MIDI it's neck and neck with jack. I hope this will be useful
>to all
>> the Linux audio devs out there.
>
>I wonder how many choices are based on the SW in use rather than choice
>
>of audio driver. Some one using an application like audacity with a
>broken 
>jack implementation or one of the midi apps that only does ALSA midi,
>have 
>less choices.
>
>Someone developing embedded HW has to develop ALSA drivers 
>first then get jack to work on that platform as well. There are lots of
>
>jack client walk throughs, but no guide at all on writing jack backends
>
>that might allow such people to go direct to jack. The info is probably
>
>right in front of my face but not in a way I see it... In any case I
>think 
>any backend is either jack1 or jack2.
>
>a2jmidi (at least with jack2) does not clearly make the HW midi ports
>look 
>like they belong in jack midi, giving the user the idea that alsa midi 
>makes more sense. While it is true that HW midi ports are becoming
>rare, 
>USB midi still shows up like hw ports.
>
>Anything using long sysex midi uses alsa midi. SO this choice is made
>by 
>jack itself. (I know work is being done to allow jack to do non-rt midi
>
>transfers, but it will take some time for developers to make use of it)
>
>The midi jack/alsa thing is getting more complex with applications 
>choosing one or the other and forcing the user to use both. a2jmidi is 
>really a way of using both, but allowing the connections to be made in
>one 
>place.
>
>These are meant to observations, I am personally glad to have all these
>
>things working as well as they do now. But it is obvious that people's 
>choices of audio/midi backends is based on more than dis/likes.
>
>>
>> If I can remember, I might try this again in a years time.
>
>That would be interesting.
>
>--
>Len Ovens
>www.ovenwerks.net
>
>
>
>------------------------------
>
>Message: 7
>Date: Sat, 25 Oct 2014 17:41:53 +0100
>From: Will J Godfrey <WillGodfrey at musically.me.uk>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID: <20141025174153.18f4a9bc at debian>
>Content-Type: text/plain; charset=US-ASCII
>
>On Sat, 25 Oct 2014 18:26:10 +0200
>Robin Gareus <robin at gareus.org> wrote:
>
>> If so, the please consider leaving the survey run longer. At least a
>> week, best a month.
>> 
>> I just read your call for participation only to find this result
>email a
>> bit further down in my Inbox. Though that's my fault for not keeping
>up
>> LAU on a on day-by-day basis.
>> 
>> Cheers!
>> robin
>
>I actually wanted to let it run for *much* longer, but survey monkey
>only
>registers the first 100 responses. After that you have to pay 15uk
>pence per
>response, and I've a suspicion that they mean per question too, so that
>makes
>30uk pence. I'm not a skinflint, but I don't think this kind of simple
>assessment warrants the expense.
>
>-- 
>It wasn't me! (Well actually, it probably was)
>
>... the hard part is not dodging what life throws at you,
>but trying to catch the good bits.
>
>
>------------------------------
>
>Message: 8
>Date: Sat, 25 Oct 2014 11:44:49 -0700 (PDT)
>From: Len Ovens <len at ovenwerks.net>
>To: linux-audio-user <linux-audio-user at lists.linuxaudio.org>
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID: <alpine.DEB.2.10.1410251113050.2497 at scott.cbbs.org>
>Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
>
>On Sat, 25 Oct 2014, Will J Godfrey wrote:
>
>> I actually wanted to let it run for *much* longer, but survey monkey
>only
>> registers the first 100 responses. After that you have to pay 15uk
>pence per
>> response, and I've a suspicion that they mean per question too, so
>that makes
>> 30uk pence. I'm not a skinflint, but I don't think this kind of
>simple
>> assessment warrants the expense.
>
>Is there some simple survey sw that can be run on any server? There may
>be 
>someone in LAU who would not mind hosting it on their own server. Mine
>is 
>quite slow (adsl based), but if there are few or no graphics I am sure
>it 
>would be ok. I am thinking that this would be a low traffic use.
>
>There is the apache mod_survey for example.
>
>--
>Len Ovens
>www.ovenwerks.net
>
>
>
>------------------------------
>
>Message: 9
>Date: Sat, 25 Oct 2014 15:04:10 -0400
>From: Brett McCoy <idragosani at gmail.com>
>To: Will Godfrey <willgodfrey at musically.me.uk>
>Cc: A list for linux audio users
>	<linux-audio-user at lists.linuxaudio.org>
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID:
>	<CAPNMgw4-OKFRiEv0ZEtWHQ-Op1+OCUwJW2K2PSaRuyDzBZh_Tw at mail.gmail.com>
>Content-Type: text/plain; charset="utf-8"
>
>On Sat, Oct 25, 2014 at 11:55 AM, Will Godfrey
><willgodfrey at musically.me.uk>
>wrote:
>
>
>> From this I think we can conclude that direct use of ALSA is far from
>dead
>> yet,
>> and for MIDI it's neck and neck with jack. I hope this will be useful
>to
>> all
>> the Linux audio devs out there.
>>
>> If I can remember, I might try this again in a years time.
>>
>
>I still use ALSA Midi for some older apps that don't support Jack MIDI
>yet,
>but that number is getting smaller and smaller.
>
>-- 
>Brett W. McCoy -- http://www.brettwmccoy.com
>------------------------------------------------------------------------
>"In the rhythm of music a secret is hidden; If I were to divulge it, it
>would overturn the world."
>    -- Jelaleddin Rumi
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>------------------------------
>
>Message: 10
>Date: Sat, 25 Oct 2014 21:23:11 +0200
>From: Jeremy Jongepier <jeremy at autostatic.com>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] zita-njbridge > zita-nabridge ?
>Message-ID: <544BF89F.8070706 at autostatic.com>
>Content-Type: text/plain; charset="windows-1252"
>
>On 10/24/2014 09:10 PM, raf wrote:
>> So now it looks like I need to learn how to cross compile jack for
>various ARM devices to have it on the lightweight clients :/
>
>What kind of ARM devices are you using and what is running on them?
>
>Jeremy
>
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>------------------------------
>
>Message: 11
>Date: Sat, 25 Oct 2014 21:47:49 +0200
>From: Ralf Mardorf <ralf.mardorf at rocketmail.com>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] A survey if you don't mind - results
>Message-ID: <1414266469.16840.38.camel at rocketmail.com>
>Content-Type: text/plain; charset="UTF-8"
>
>On Sat, 2014-10-25 at 11:44 -0700, Len Ovens wrote:
>> On Sat, 25 Oct 2014, Will J Godfrey wrote:
>> 
>> > I actually wanted to let it run for *much* longer, but survey
>monkey only
>> > registers the first 100 responses. [snip]
>> 
>> Is there some simple survey sw that can be run on any server? There
>may be 
>> someone in LAU who would not mind hosting it on their own server.
>Mine is 
>> quite slow (adsl based), but if there are few or no graphics I am
>sure it 
>> would be ok. I am thinking that this would be a low traffic use.
>
>It would be nice to get a more representative poll. I guess we are a
>few
>more than just 100 people and some perhaps less often retrieve mails,
>so
>the poll should continue for longer than a month.
>
>
>
>------------------------------
>
>Message: 12
>Date: Sat, 25 Oct 2014 23:07:07 +0200
>From: Rapha?l Mouneyres <rmouneyres at gmail.com>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] zita-njbridge > zita-nabridge ?
>Message-ID:
>	<CACHZ1igEAeQTMqmEWS6q1UzqSH-qmtisr9-HzT6OCEwKXEYxEg at mail.gmail.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>The boards of main concern are two arcom viper boards with a PXA255
>processor running a 2.4 kernel. They are upgradable to 2.6 but I have
>not
>worked on it yet.
>The arcom provided alsa driver is working without effort with the
>onboard
>chipset.
>Le 25 oct. 2014 21:23, "Jeremy Jongepier" <jeremy at autostatic.com> a
>?crit :
>
>> On 10/24/2014 09:10 PM, raf wrote:
>> > So now it looks like I need to learn how to cross compile jack for
>> various ARM devices to have it on the lightweight clients :/
>>
>> What kind of ARM devices are you using and what is running on them?
>>
>> Jeremy
>>
>>
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>>
>>
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>------------------------------
>
>Message: 13
>Date: Sun, 26 Oct 2014 12:47:58 +0100
>From: Atte <atte at youmail.dk>
>To: linux-audio-user <Linux-audio-user at lists.linuxaudio.org>
>Subject: [LAU] recordmydesktop stereo
>Message-ID: <544CDF6E.2040309 at youmail.dk>
>Content-Type: text/plain; charset=ISO-8859-1
>
>Hi
>
>Trying my luck again with recordmydesktop. Found that the following
>eventually starts record my desktop:
>
>https://dl.dropboxusercontent.com/u/4343030/recordmydesktop
>
>However it seems to only record in mono. How do I capture two audio
>channels?
>
>Even better: is there an alternative out there that actually works?
>
>-- 
>Atte
>
>http://atte.dk   http://a773.dk
>
>
>------------------------------
>
>Message: 14
>Date: Sun, 26 Oct 2014 11:51:22 +0000
>From: Conor Mc Cormack <conor.mccormack at gmx.com>
>To: linux-audio-user at lists.linuxaudio.org
>Subject: Re: [LAU] recordmydesktop stereo
>Message-ID: <544CE03A.8050207 at gmx.com>
>Content-Type: text/plain; charset=windows-1252; format=flowed
>
>You could try SimpleScreenRecorder -
>
>http://www.maartenbaert.be/simplescreenrecorder/
>
>
>On 26/10/14 11:47, Atte wrote:
>> Hi
>>
>> Trying my luck again with recordmydesktop. Found that the following
>> eventually starts record my desktop:
>>
>> https://dl.dropboxusercontent.com/u/4343030/recordmydesktop
>>
>> However it seems to only record in mono. How do I capture two audio
>> channels?
>>
>> Even better: is there an alternative out there that actually works?
>>
>
>
>
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>End of Linux-audio-user Digest, Vol 92, Issue 22
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