07-28-2024, 11:20 AM
I ran a quick test and am not able to repro your issue.
1. Power off Allo Revolution DAC (USB)
2. Leave Pi running
3. Wait a bit
4. Power on DAC
Audio Config still shows Output device set to "0:Allo Revolution DAC"
Couple things I did noticed after powering on the DAC.
- Its hardware volume level reset to -127dB
- Moode volume knob was not responsive for about half a minute although that DAC hardware volume was being changed.
In moode 8 series (Bullseye), ALSA device/card assignments were fixed but in moode 9 series (Bookworm) ALSA uses dynamic device/card assignments i.e. during startup ALSA may assign a given audio device a card number different from what was assigned previously.
Why not just leave your DAC on?
1. Power off Allo Revolution DAC (USB)
2. Leave Pi running
3. Wait a bit
4. Power on DAC
Audio Config still shows Output device set to "0:Allo Revolution DAC"
Couple things I did noticed after powering on the DAC.
- Its hardware volume level reset to -127dB
- Moode volume knob was not responsive for about half a minute although that DAC hardware volume was being changed.
In moode 8 series (Bullseye), ALSA device/card assignments were fixed but in moode 9 series (Bookworm) ALSA uses dynamic device/card assignments i.e. during startup ALSA may assign a given audio device a card number different from what was assigned previously.
Why not just leave your DAC on?
