USB DAC via OTG doesn't work
Expected Behavior
USB Audio Player Pro should get exclusive access to USB DAC device connected via OTG cable, and play music through the USB DAC.
Current Behavior
USB Audio Player Pro is denied exclusive access to the USB DAC device. A number of issues have been filed for the same behavior. Please see #6189 (closed), #6199, #6216 and #6232. Therefore, the workaround suggested in #6216 (plugging the USB device during reboot) works in this case.
Steps to Reproduce
Connect USB DAC (Audioquest Dragonfly or whatever) to phone, USB Audio Player Pro should start automatically and a pop-up form asks for permission to connect to USB DAC. After the access is granted, the pop-up form keeps coming back.
Device information
/device lisa /version lineage-20 /date 2023-09-30 /kernel 5.4.242-qgki-g7d8566d19160 #1 Sat Sep 30 01:46:34 UTC 2023 /baseband 4.3CPL2-gl-26.1-15406.330108_2219_856558541b4 /mods Gapps
I have read the directions.