berkovsky

This is not a problem but dirty "NAND availability check" ... BTW: for armbian-config testing you only need to switch to beta repository and issue apt-get update / upgrade.

There is no NAND chip on M1 (unless you have some weird version).

AFAIK M1 does not have I2S on header. You need PRO, Cubietruck, Orangepi PC+ ... check which have I2S. Further it might not be connector compatible so you will need to wire things together.

Better check something like this:
 

http://www.ebay.com/itm/PCM5102-DAC-Decoder-I2S-Player-Board-32Bit-384K-Beyond-ES9023-PCM1794-/142125650366?hash=item21175951be:g:b5sAAOSwLF1X48tC
 
This one is among cheapest ... but you can easily find something more PRO.

Hi Berkovsky,
I have similar problem with Lime2-eMMC (A20 & AXP209) board and customized Armbian build always using latest mainline Kernel versions (4.8.10 at the moment).
The problem is discussed from here to here but some HW dependency on UART0 RxD was found.
 
Can you check if the bug disappears in case of serial console disconnecting if one is used.
 
Best regards
Chris

This is somehow expected. You need to use our tools, which uses proper config and additional patches which are not (yet) mainlined.
 
Edit: stick to kernel 4.8.x, on older you will need to adjust patches.

You'll need to remove "ramlog" from /etc/init.d/rsyslog LSB header then.