Linux Lite Forums
Hardware - Support => Sound => Topic started by: oldwood on December 31, 2020, 10:52:41 AM
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Hi everyone,
I am new to Linux Lite. I have it installed on a Asus laptop and I am using USB out to a Emotiva XDA-2 DAC for music. It works well but in the evening I turn off the DAC and in the morning I need to reboot in order to get the OS to find the USB audio channel.
Is there a CMD I can use to re-scan for the USB audio output? I have tried re-plugging the USB cable but that does not work.
Any input is greatly appreciated.
Thanks
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Try 3rd post - https://ubuntuforums.org/archive/index.php/t-764576.html
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Thanks Jerry I stored the setting so I will try to restore in the morning and let you know how it works.
Happy New Year
Gerry
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I tried to restore the ALSA but it did not restore the USB DAC as a sound option.
I was able to replug the USB cable to the DAC and that did restore the option.
I would like to be able to restore without re-plugging just to prevent wear and tear on the cable and port.
I have attached the screenshot of the terminal. It is a png file so the ext needs changing.
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I have not checked if 5.x still uses pulseaudio and could be unrelated but just in case...
Before opening any apps, open a terminal and enter the command :
sudo pulseaudio --kill
Then check if the audio workz! ;)
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I will give that a try. It is odd because sometimes I can re-plug the USB to the DAC and it pops up while other times it needs a reboot. I have tried turning the DAC off and back on but that does not do anything.
Thanks,
Gerry
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I have not checked if 5.x still uses pulseaudio and could be unrelated but just in case...
Before opening any apps, open a terminal and enter the command :
sudo pulseaudio --kill
Then check if the audio workz! ;)
I gave this a try and get the response, failed to kill daemon: no such process.
In ALSAMIXER pulse audio is listed so maybe I am doing something wrong?
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So I am still trying to get the OS to see the Emotiva USB DAC on resume from sleep. Sometimes re-plugging works sometimes it does not, sometimes a re-boot works and sometimes it does not.
I tried alsactl restore and got a more informative output but it does not connect the DAC. I have attached the screenshot, it is a png file.
I have a Asus Xonar U7 mk2 DAC and it is found and is connected on resume from sleep but I would like to use the Emotiva DAC if possible. The Xonar USB is USB powered so maybe that is why it is seen and connected on resume?
I don't know what triggers the connection of the USB DAC or if I can force it to re-scan and connect.
Any and all suggestions are welcomed.
Thanks,
Gerry
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Hi,
Your problem seems "deeper" than just the sound engine.
Maybe a Linux guru (or a web search?) could tell you how reset a linux "device" and not just the sound engine.
Maybe activating the "Plug and play" function in the BIOS? but that seems like a shot in the dark.
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So I might have found a solution. I think the problem is related to USB auto suspend. I disabled auto suspend by following this guide.
https://ywjheart.wordpress.com/2018/07/17/disable-usb-auto-suspend-in-ubuntu-debian/
I will post back after a while when I know if it stays connected.
Thanks guys for your suggestions.
Gerry
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While that did not work! when I resume from suspend there is no connection to the USB DAC and it is hard to get it back, so no change.
I might need to give up and just use a different DAC.
Gerry
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Maybe unpluging the DAC before going in suspend?
Not really a solution but... it's better than buyng a horseshoe and a four-leaf clover. ;)
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I might need to give up and just use a different DAC.
I use the ifi Audio nano iOne DAC. It performs really well in Linux Lite, but I do not recommend it for Windows.
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Maybe unpluging the DAC before going in suspend?
Not really a solution but... it's better than buyng a horseshoe and a four-leaf clover. ;)
We stream a radio station and like to listen at night while drifting off to sleep. The amp and the laptop are set to sleep but the Amp/DAC goes to sleep before the laptop. The amp triggers the DAC to shutdown so the OS sees it drop out and this is probably why I need to reboot to get it back.
Tonight I am going to unplug the trigger so the DAC will not shut off when the amp shuts off. Not a great solution but I think the power usage is pretty low.
If this works I could set it up so the Amp/DAC go down after the laptop and that should work?
Thanks for the help.
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I might need to give up and just use a different DAC.
I use the ifi Audio nano iOne DAC. It performs really well in Linux Lite, but I do not recommend it for Windows.
Hi Jacob,
I will give it a look. No worries about windows I switched all my systems to Linux and have no intention of ever going back ;)
Thanks,
Gerry
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No worries about windows I switched all my systems to Linux and have no intention of ever going back ;)
Lucky, unfortunately, in this sheep world I have to keep some Big M machines since my job requires it ;) . One day...
(https://pics.me.me/picture-unrelated-but-its-a-gigantic-panda-blasting-a-hole-22744639.png)
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Just wanted to confirm that if the computer goes into suspend before the DAC goes offline then the DAC is connected on resume. I can make that work for my situation.
So would that be solved or side stepped ;)
Thanks for the input, it is greatly appreciated.
Gerry