@user For posterity:

I was using lineageOS prior to this, there was an issue flashing back to android. namely, mke2fs failed because unimplemented ext2 function while setting up superblock

quick google search said I need to go into the flash-all.sh and edit it.

I had to change the last line from fastboot update -w <image.zip> to fastboot update <image.zip>

the -w flag is to wipe userdata and cache.

So far, the image seems to be flashing without issues.

@Flohack I do not actually have this issue, but I haven't tested my music app yet so that may be why

@Flohack Thank you very much, yeah It seems a lot more complicated than I initially bargained for, but I don't mind taking a deep dive into the guts of the system. I haven't got much else better to do

I'll let you know if I make any headway

@Flohack I'm trying to hack my way into the device to figure out how to get an audio stream for the calls. Could you point me in the right direction with how telephony and audio work?

It seems that the phone uses ofono for calls and pulseaudio for audio, but getting them to play together hasn't been at all fruitful.

@Flohack 21 ms ping, 17.96 MBPS down

@Girlycard777 don't know if you saw this yet, but helpful when setting up
http://pad.ubports.com/p/nexus-6p-alphatesting

I grepped 'pulse' in var/log/syslog and got this for the time that I was trying to make a phone call:

8 13:48:35 ubuntu-phablet pulseaudio[2626]: [pulseaudio] sink.h: Assertion 'pa_object_refcnt(pa_object_cast(o)) > 0' failed at ./pulsecore/sink.h:306, function pa_sink_assert_ref(). Aborting.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] pid.c: Stale PID file, overwriting.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] droid-util.c: Requested sample rate 44100 but got 48000 instead.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] sink.c: Default and alternate sample rates are the same.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] droid-util.c: Requested sample rate 44100 but got 48000 instead.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] sink.c: Default and alternate sample rates are the same.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] module-droid-discover.c: Device has AudioFlingerglue
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] droid-util.c: Failed to open output stream: -17
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] droid-sink.c: Failed to open output stream.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] droid-util.c: Failed to open output stream: -17
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] droid-sink.c: Failed to open output stream.
Jul  8 13:48:36 ubuntu-phablet kernel: [  109.700560] pulseaudio[7983]: syscall 389
Jul  8 13:48:36 ubuntu-phablet kernel: [  109.700597] CPU: 0 PID: 7983 Comm: pulseaudio Not tainted 3.10.73-g45457ef #12
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] main.c: Sink sink.primary does not exist.
Jul  8 13:48:36 ubuntu-phablet pulseaudio[7983]: [pulseaudio] main.c: Source source.primary does not exist.

not sure if this is very helpful for troubleshooting the phone audio issues.

I can make calls, but audio doesn't seem to be getting transferred. No sound on either device when i phone.

The selfie cam works but the image appears distorted. not a big issue.

There doesn't seem to be any integration for the fingerprint reader as well.