I'm trying to test drive the Ubuntu touch on my Nexus 7 (2013) which recently has been upgraded to Lollipop (5.0.2). So I followed the steps starting with backing up my device. But the problem is that adb does not list my device!
$ adb devices
List of devices attached
$
Also:
$ adb backup -apk -shared -all
adb: unable to connect for backup
It's in the case that my tablet is successfully recognized as a mass storage and I can copy to/from it easily. I've also made sure that the developer mode is activated on my device, as I tap on Build number it tells me:
No need, you are already a developer.
Yet adb can not find it. How can I find what's wrong with it?
[UPDATE]
I just realized that I've also got a smart phone! It's a Moto G with KitKat 4.4.4 on it. adb does not find that either!
On your device switch from 'media device' to 'camera device'. And adb will recognize.