15 Oct
2020
15 Oct
'20
8:51 p.m.
Hi, Jeanette!
It's been a while since I had my Delta 1010s, but lets see what I can remember.
The network amd Braille reader issue reminded me of an issue I had ages ago with my
1010s and a USB MIDI control surface.
I documented my fix at https://delta.brainiac.com/deltasync.html
In short, I had to modify the modprobe.conf file to make device labeling
consistent, then I built an .asoundrc file that combined the cards into a
single device.
This was a long time ago, and I was using Fedora back then. I know that
modprobe.conf lives in /etc/modprobe.d/ under Arch but I think that's the
only big difference between what's on my website and Arch.
Good luck!
Joe
On Thu, 15 Oct 2020 18:21:21 +0200 (CEST)
"Jeanette C." <julien(a)mail.uni-paderborn.de> wrote:
Hey hey,
I have two M-Audio Delta 1010LT cards, sync'ed via S/PDIF. Two ALSA devices
were created to sum the inputs and outputs respectively.
On top of that JACK is running. Now, I noticed that it is a decision between
two problems that I face: if they are correctly sync'ed, some system services
regularly freeze. This includes the networ, the Braille display (connected via
USB). If, as has happened before, the setup isn't remembered correctly and the
S/PDIF sync is not made, occasionally the cards begin to have input problems.
The sound suddenly degrades with an effect like bad resampling (decimation
effect).
I have had these cards running for a long time in this constellation, but only
in the past few years these problems cropped up. I have changed the distro
from Debian to Arch Linux. On Arch I have tested the system for realtime
operation several times, using the realTimeConfigQuickScan script.
Could this be a kernel issues? Some ALSA update? Or a question of the kernel
patches that one is running? I am running the following two kernels now:
5.6.19-rt12-1-rt
or
5.8.14-arch1-1
The last time I ran Debian it was on a 2.6.3x kernel, IIRC.
Any suggestions, apart from don't use your cards at once, would be very much
appreciated. :)
Best wishes,
Jeanette
--
* Website: http://juliencoder.de - for summer is a state of sound
* Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
* Audiobombs: https://www.audiobombs.com/users/jeanette_c
* GitHub: https://github.com/jeanette-c
But now I'm stronger than yesterday <3
(Britney Spears)
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user
--
======================================================================
Joe Hartley - UNIX/network Consultant - jh(a)brainiac.com
Without deviation from the norm, "progress" is not possible. - FZappa