USB DAC not reconnecting after restart

Question

USB DAC not reconnecting after restart

wbinek opened this issue 4 years ago · 4 comments

Hi,
I use Volumio with DRC on RaspberryPi with USB DAC. The DAC is being shutdown when it is not in use. The problem is that after the DAC is started again the Volumio with DRC doesn't connect with it. When I change anything in the DRC plugin settings and click apply or reboot the Pi it is working again. Is it possible to detect the usb device reconnecting and force the plugin refresh/reconnect?
Any help appreciated :)

Answer 1 · 2020-12-02T16:58:57.000Z

And without the plugin it works?

Answer 2 · 2020-12-02T20:59:44.000Z

Without the DSP it works. After the DAC is disconnected it shows a banner saying that device must be reconnected or other output must be selected. After turning on the DAC the message disappears and then about 15-20 seconds later second message appears saying that the configuration was updated, the player is restarted and afterwards all works fine.

With the DSP the disconnected banner appears but it doesn't disappear after DAC is connected.

I attach logs created when I shut down wait and start DAC with and without DRC. There is also a log taken after I press apply in the DRC settings when the DAC is not detected (basically what happens right after the log_with_DRC).

log_with_DRC_after_apply.txt
log_without_DRC.txt
log_with_DRC.txt

Answer 3 · 2020-12-15T11:59:30.000Z

Hi,
I have found a workaround. The problem is that when the device is not connected the brutefir service fails, so I modified the brutefir.service config to infinitely restart every 60 seconds. Probably some watchdog for device connection would be a better solution but restarting brutefir seems easier.

Answer 4 · 2021-05-10T17:31:43.000Z

Hi, I have just tested beta build of Volumio 3 (buster) with Dsp4Volumio and there is no reconnecting problem anymore, so I think it closes the issue.