Ultralite AVB

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Musinux
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Re: Ultralite AVB

Postby Musinux » Tue Apr 10, 2018 4:27 pm

alcomatt wrote:
. I am quite busy right now so it might take me a while.


I came across that patch as well.

Since I'm too lazy to build a patched module, I tried adding

Code: Select all

options snd_usb_audio index=3 quirk_alias=07fd0005:168600dd

and

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options snd_usb_audio index=3 quirk_alias=07fd0005:154e1003

to /etc/modprobe.d/sound.conf (not both at the same time of course),
which should work the same way as loading the patched module would.

The first one works just like unquirked.
With the second, it was nearly impossible to switch samplerates in jack and,
after playing around with it too much, the Ultralite locked up (in a crazy new way).

If I'd build a patched module, I'd play around with the delay amount (as suggested in your URL as well).

Edit: In the case somebody wants to try other usb ids with the modprobe method, you might have to remove or edit the "index=3" part.
grep https://github.com/torvalds/linux/blob/06dd3dfeea60e2a6457a6aedf97afc8e6d2ba497/sound/usb/quirks.c for USB_ID.

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Be.
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Re: Ultralite AVB

Postby Be. » Sat Apr 14, 2018 12:15 pm

alcomatt wrote:Has any of you manged to get a decent performance with jack2? I keep on having xruns all over the place, regardless what I do. With Jack1 however, the performance is solid and I can 0 xruns with buffer sizes down to 64. I would have moved back to jack1 but sadly Bitwig only supports jack2 and now I am in a right kerfuffle... this catch-22 situation drives me mad


Interesting. I have not tried Jack1.

alcomatt wrote:I may have a solution to this but not 100% sure yet. I have been checking my kernel logs and I kept on seeing the below error reported from the device:

Code: Select all

usb 3-4: clock source 1 is not valid, cannot use


This lead me to http://guillaumeplayground.net/teac-ud- ... mment-8186 and it looks like it is worth a shot. I will try writing a quirks options for MOTU hardware IDs and see if it makes a difference. I am quite busy right now so it might take me a while. If any of you are experienced in C then you're more than welcome to try


Cool, I would be happy to test patches. Maybe if we're lucky that will magically fix the crackling too?

Ulrich
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Re: Ultralite AVB

Postby Ulrich » Wed Apr 25, 2018 11:45 am

Anyone tried the patch ? Does it fix the issue when plugging the card ?

dsreyes1014
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Re: Ultralite AVB

Postby dsreyes1014 » Thu May 17, 2018 9:41 pm

Has anyone tried this patch? I'm curious to see if this solves an issue for me with the TouchConsole beta firmware where it doesn't playback correctly.

Musinux
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Re: Ultralite AVB

Postby Musinux » Thu May 31, 2018 7:29 am

dsreyes1014 wrote:Has anyone tried this patch?


There is no patch as of yet.

See my other post, if you want to try, you can use the quirks option.

Either way (compiling a patched kernel or using quirks), I think just changing the VID:PID won't be enough.
You'll have to change the delay parameter to what the ultralite avb needs.

Just be sure to backup all your settings, because the ultralite avb can crash while testing this...

Musinux
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Re: Ultralite AVB

Postby Musinux » Sun Jun 24, 2018 8:52 am

There's a new firmware update for the Ultralite AVB.

https://cdn-data.motu.com/downloads/audio/AVB/firmware/io/180620/MOTU%20AVB%201.3.4%2B603%20for%20UltraLite%20AVB%20and%20Stage-B16.update

Changelog:

v1.3.4+603 (Release Date 2018-06-20)

Introduces new Touch Console™
Fixes an intermittent issue that could cause audio glitch on USB input
Improves audio startup timing

Besides the ui changes, the "bit-crusher" effect is different now. it still happens without xruns, but it's softer and it fades into complete silence, returning to normal for some time.
After some testing, I can say it's worse for me (happens more often and longer than before).

I'm still not using quirks or a patched kernel.

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Be.
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Re: Ultralite AVB

Postby Be. » Mon Jun 25, 2018 12:54 pm

Well, that's anticlimactic. :/

I've gotten much better speakers since before (Genelec 8030As) and just tried the Ultralite AVB for the first time with them. I can clearly hear now that the RME Babyface Pro sounds better, so I'll likely sell my Ultralite AVB. Too bad I already broke the screen carrying it in a backpack so I'll have to reduce the price a lot...

Musinux
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Re: Ultralite AVB

Postby Musinux » Thu Jun 28, 2018 3:24 pm

Be. wrote:Well, that's anticlimactic. :/

I've gotten much better speakers since before (Genelec 8030As) and just tried the Ultralite AVB for the first time with them. I can clearly hear now that the RME Babyface Pro sounds better, so I'll likely sell my Ultralite AVB. Too bad I already broke the screen carrying it in a backpack so I'll have to reduce the price a lot...


Just to raise the value of our Interface a little (before I sell mine too in the long run :D ):
After the update it doesn't crack as often when starting or stopping something!


OT:
Have you compared the Babyface Pro with the non-Pro Babyface by accident? I think my non-Pro Babyface is a little little worse sounding than the Ultralite with my Adam A7Xs...
The Fireface UCX would be the RME-Interface of my choice, mainly because of the stand-alone/midi remote-control feature.
But it's expensive and sadly some of those features seem pretty non-working if you google for it.

OT2:
Since I couldn't overread your signature regarding Mixxx, thank you for this great piece of software! Although I don't really use it much myself, a friend of mine loves Mixxx and shows/tells everybody how great it is.

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Be.
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Re: Ultralite AVB

Postby Be. » Thu Jun 28, 2018 5:18 pm

Musinux wrote:After the update it doesn't crack as often when starting or stopping something!


That's nice for home/studio use, but any chance of crackling makes the device unsuitable for performance.

Musinux wrote:Have you compared the Babyface Pro with the non-Pro Babyface by accident? I think my non-Pro Babyface is a little little worse sounding than the Ultralite with my Adam A7Xs...


No, I have the Babyface Pro, not the original Babyface.

I didn't think this would be as annoying as it is, but after setting it up for performance a few times, the requirement to plug the Ultralite AVB into its own power supply is quite annoying. It's more annoying that the cord for the AC adapter it is shipped with is not very long. This makes me appreciate the Babyface Pro being USB bus powered. I was hoping the MOTU 624 would be able to be bus powered since it uses USB 3 which can supply more current, but when I asked MOTU support about it they said it still requires its own power supply. :/

Musinux wrote:Since I couldn't overread your signature regarding Mixxx, thank you for this great piece of software! Although I don't really use it much myself, a friend of mine loves Mixxx and shows/tells everybody how great it is.


Thanks :)

vth
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Re: Ultralite AVB

Postby vth » Wed Jul 18, 2018 7:17 am

Has anyone experimented with downgrading their AVB firmware to 1.2.8+378 (September 2016 release)?

I recently bought a used UltraLite AVB despite having read this thread, with the intention of reselling it if I can't make it work for me. My unit came with the latest 1.3.4+603 firmware already installed. Initially on my setup the bitcrusher effect reliably kicked in after around 13 minutes of playback and it didn't seem to go away until I killed and restarted my audio server (Jack and PA behaved the same in this regard). Inspired by this thread: http://forum.cakewalk.com/tm.aspx?m=3682836&p=2 I downgraded my firmware to the suggested version and I haven't been able to reproduce the crackling issue since.

Granted, I haven't had the time to test it very thoroughly, but in addition to simple playback tests I've done some stress testing with plugin-induced xruns and nothing strange seems to happen. Before downgrading, simply playing from Spotify through PulseAudio was enough to eventually initiate the crackling for me.


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