Done some more testing. Waited for over 5 mins - no change (black screen with title bar). However I was wrong about steps 4 and 5 - if I close UAPP first and then detach DAC, UAPP starts normally. Problems arise only when I disconnect DAC with UAPP still running ("USB detached!" toast appears): if I try to reconnect the DAC, UAPP won't see it anymore and plays thru Android (option set), or, if I close UAPP it won't start again - just hangs on black screen with title bar.
My device is NavRoad NEXO Smart Duo (from what I've managed to find it's just a rebranded Cube U51GT) on MT8312 chipset, running clean Android 4.2.2 (device has factory root).
My DAC is a standard application of Texas Instruments PCM2704 chip.
My device is NavRoad NEXO Smart Duo (from what I've managed to find it's just a rebranded Cube U51GT) on MT8312 chipset, running clean Android 4.2.2 (device has factory root).
My DAC is a standard application of Texas Instruments PCM2704 chip.