I have a device to which I recently flashed CM 9 which I use for testing backward compatibility in apps. However, adb doesn't seem to recognise it.
adb devices outputs the following when it is connected:
List of devices attached ???????????? offline
And also sometimes this:
List of devices attached ???????????? device
When it says
device, I can use normal adb commands, however, if I connect another device it will stop working (because the device has no identifier so adb will always prefer the other device). I've tried this on both OS X and Linux, and the same device running CM11 works fine with adb. I've tried several different USB cables and also other devices, all of which work.
So, has anyone else had this issue/resolved it? Any other ideas on how I might try and work out the cause of this issue?