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 >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Sent from: >>>>> http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html >>>>> _______________________________________________ >>>>> Linux-audio-user mailing list >>>>> >>> >>>> Linux-audio-user@.linuxaudio >>> >>>>> https://lists.linuxaudio.org/listinfo/linux-audio-user >>>> _______________________________________________ >>>> Linux-audio-user mailing list >>> >>>> Linux-audio-user@.linuxaudio >>> >>>> https://lists.linuxaudio.org/listinfo/linux-audio-user >>> >>> >>> >>> >>> >>> -- >>> Sent from: >>> http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html >>> _______________________________________________ >>> Linux-audio-user mailing list >> >>> Linux-audio-user@.linuxaudio >> >>> https://lists.linuxaudio.org/listinfo/linux-audio-user >> >> >> >> >> >> -- >> Sent from: >> http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html >> _______________________________________________ >> Linux-audio-user mailing list >> > Linux-audio-user@.linuxaudio >> https://lists.linuxaudio.org/listinfo/linux-audio-user > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@.linuxaudio > https://lists.linuxaudio.org/listinfo/linux-audio-user -- Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
