Arch Linux

gwaewion

Member

Registered: 2014-09-25

Posts: 9

trouble with external DAC

good day. i have an external DAC (Hifimydiy usb dac 2 async) based on sa9023 chip from Savitech. and i have follow problem: when i make cold boot or reboot linux pickup wrong drivers (for Bravo-X) and in system DAC looks like Bravo-X soundcard. and there is no sound output. but if i unplug power and plug back again DAC appear in system correctly as SA9023.

how can i choose right driver? there is dmesg output - http://pastebin.com/Tg1AWevX

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,776

Re: trouble with external DAC

Blacklisting the kernel module for the Bravo-X drivers would be my first suggestion. 
https://wiki.archlinux.org/index.php/ke … acklisting

Last edited by ewaller (2017-01-24 15:25:22)

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V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,678

Re: trouble with external DAC

That driver is likely going to be snd-usb-audio for both. But adjusting its parameters should help, something like /etc/modprobe.d/usbdac.conf :

options snd-usb-audio enable=0,1 vid=0x262a,0x262a pid=0x9023,0x10e1

gwaewion

Member

Registered: 2014-09-25

Posts: 9

Re: trouble with external DAC

That driver is likely going to be snd-usb-audio for both. But adjusting its parameters should help, something like /etc/modprobe.d/usbdac.conf :

options snd-usb-audio enable=0,1 vid=0x262a,0x262a pid=0x9023,0x10e1

this not work for me.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,678

Re: trouble with external DAC

Can you post

lsusb -v

? Is it always, even in lsusb a one or the other deal (i.e. you only see the bravo card at first and only the saitech after a replug?)

gwaewion

Member

Registered: 2014-09-25

Posts: 9

Re: trouble with external DAC

Can you post

lsusb -v

? Is it always, even in lsusb a one or the other deal (i.e. you only see the bravo card at first and only the saitech after a replug?)

http://pastebin.com/52MAmvnH

if i correctly understand - yes, there is one card at time.