Re: [LAU] Hardware Soundcard - MOTU 624 AVB Working with Gnu/Linux - Debian 8.7

Hi.
No,I don't run any optical device. My clock mode is always internal.

 I have tweaked my ubuntu dist adapting some of my configurations from here:
https://wiki.linuxaudio.org/wiki/system_configuration

And switching to lowlatency kernels every time I am doing audio stuff.
But the matter is all these tweaks have nothing to do with these periodic
clicks

list-2 wrote
> Hello.
>
> According to the manual :
>
> https://s3.amazonaws.com/motu-www-data/manuals/avb/624_User_Guide.pdf
>
> Page 45.
>
> Do you run any optical device ? Or a outside clock device to sync with ?
>
>
> The only «problems» i have with the MOTU 624 AVB with Gnu/Linux (Debian
> 8.7 and 9) are :
>
> Got 1 Xrun per Hour, not matter what i do, even if i do nothing with the
> computer.
> If i change the Buffer size, sometimes called frames/period, the lower i
> set it the more i get Xrun without doing nothing with the computer.
> I guess it's a USB3 (never tested USB2) problem with either my
> motherboard - not a new one - or Alsa....
> Latency is not a problem for what i'm doing, as i also have with the
> MOTU 624 AVB the routing grid that allow to have direct monitoring.
>
> Other thing :
> If i set the Sampling Rate in the MOTU 624 AVB's web interface, to
> 192000, all the «From Computer» (1 2 3 ...) disappear, thus no sound
> from anything played from computer.
> Never investigate further this point as i do not know why i would use
> 192000 sampling rate...
>
> Cheers !
>
>
>
> On 2017-12-21 05:01, georgnk wrote:
>> Hi guys, I think I found the cause of these tiny clicks.
>> Messing around with clock mode I discovered that changing the clock
>> mode
>> affects the rate of these clicks. Choosing ltc or optical mode then
>> back to
>> internal..They stop for a while and then start again.
>> If you have any ideas I 'd appreciate a lot.
>> Cheers
>>
>>
>> georgnk wrote
>>> Hi.
>>> Yes the firmware is v1.3.2+102 (520 is for the avb)
>>> I don't know either what the bios menu is doing. I can only find bios
>>> if I
>>> press the select button from my interface and shows some info,nothing
>>> more.
>>>
>>> If you test it one day please let me know if you also have this
>>> (minor)
>>> issue.
>>>
>>> Have nice holidays. Cheers!
>>>
>>>
>>>
>>>
>>> list-2 wrote
>>>> Hello.
>>>>
>>>> I am away from my computer with the MOTU 624 AVB for the holidays.
>>>> I'll
>>>> make a try when i'll be back.
>>>>
>>>> But i've just checked the firmware pages of MOTU's web site and :
>>>>
>>>> v1.3.2+520 (Release Date 2017-12-13)
>>>>
>>>> A new one as been added few days ago. I've never tried this one.
>>>> Is the the firmware you running your card with ?
>>>>
>>>> The change log says :
>>>>
>>>> Added Bios menu
>>>>
>>>> Hmm i'm really wonder what it does, and if it break anything with
>>>> Gnu/Linux Os.
>>>>
>>>> Cheers !
>>>>
>>>>
>>>>
>>>> On 2017-12-20 02:41, georgnk wrote:
>>>>> Hello thank you for the reply.
>>>>> The clicks are periodic.well,not strictly periodic but almost every
>>>>> two
>>>>> seconds. I have tried your suggestions but didn't change something.
>>>>>
>>>>> What I have also discovered is that the clicks are not passing
>>>>> through
>>>>> my
>>>>> software. Testing a sine wave and using a spectrum analysis in real
>>>>> time,
>>>>> sndpeek, clicks don't show up there. It seems they are coming
>>>>> directly
>>>>> to my
>>>>> monitors (headphones)
>>>>>
>>>>> Thanks a lot
>>>>>
>>>>>
>>>>> Len Ovens wrote
>>>>>> On Mon, 18 Dec 2017, georgnk wrote:
>>>>>>
>>>>>>> I can also select my sound card without qjackctl and Jackd.
>>>>>>> Pure data can see my input s and outputs directly. Then I go audio
>>>>>>> test
>>>>>>> play
>>>>>>> the sine wave , wait a while, I move frequency up and down,clicks
>>>>>>> start
>>>>>>> and
>>>>>>> never stop.
>>>>>>
>>>>>> If these are random clicks, that sounds like sync issues. Some
>>>>>> things
>>>>>> to
>>>>>> try:
>>>>>> - set pulse default and alternate sample rate to 48000
>>>>>> - turn off HDA audio either in bios or in pulse:
>>>>>> pactl unload-module module-udev-detect
>>>>>> pactl unload-module module-alsa-card
>>>>>> (note that if pulse can see any audio card directly,
>>>>>> it may choose to sync from that one even if you are
>>>>>> not using it)
>>>>>> - try different sample rates, in particular both 44100 and
>>>>>> 48000. It may be that alsa is under the impression
>>>>>> it can set sample rate when that is not the case.
>>>>>>
>>>>>> I have not seen in this thread any meantion of the web interface
>>>>>> that
>>>>>> the
>>>>>> motu AVB series interfaces normally have, so I am guessing this is
>>>>>> not
>>>>>> one
>>>>>> of these boxes. Motu's support in the past with Linux has be
>>>>>> notoriously
>>>>>> bad until the AVB series, so you may have something that will not
>>>>>> work
>>>>>> with Linux properly... as in, it is USB2.0 compliant so far as
>>>>>> sound
>>>>>> transfer is concerned, but expects a provided blob to do device
>>>>>> setup.
>>>>>> The
>>>>>> AVB series uses a web based setup tool that is OS agnostic.
>>>>>>
>>>>>> --
>>>>>> Len Ovens
>>>>>> www.ovenwerks.net
>>>>>>
>>>>>> _______________________________________________
>>>>>> Linux-audio-user mailing list
>>>>>
>>>>>> Linux-audio-user@.linuxaudio
>>>>>
>>>>>> https://lists.linuxaudio.org/listinfo/linux-audio-user
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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