Hello,
I am measuring energy usage on a Samsung Galaxy Nexus using an external power monitor.
I have built a 4.1.2 full_maguro-userdebug AOSP and noticing some strange results:
This is with the stock kernel, with no modifications and with no applications installed. I simply added
the 5 binary packages provided by Google for JZO54K.
I also tried the factory images provided by Google (JZO54K) and the power usage is better:
What could be causing this ? Could it be because it's a userdebug variant ? Did I forget including something in the ROM ? Could some process keep waking up the device ? I checked and there are no wakelocks taken. Any ideas how I should go about debugging this issue ?
Thank you for your time.
I am measuring energy usage on a Samsung Galaxy Nexus using an external power monitor.
I have built a 4.1.2 full_maguro-userdebug AOSP and noticing some strange results:
- The device continuously uses almost 200mW, with everything turned off
- Every 10 seconds, like clockwork, the power surges to 1W for 3-4 seconds, then drops back to 200mW
This is with the stock kernel, with no modifications and with no applications installed. I simply added
the 5 binary packages provided by Google for JZO54K.
I also tried the factory images provided by Google (JZO54K) and the power usage is better:
- When sleeping the power stays somewhere near 12mW, with very short spikes of up to 100mW every second
- When SSH-ing to the device (over BT) and performing a few commands in rapid succession it enters a state of 200mW, and stays in it for minutes
What could be causing this ? Could it be because it's a userdebug variant ? Did I forget including something in the ROM ? Could some process keep waking up the device ? I checked and there are no wakelocks taken. Any ideas how I should go about debugging this issue ?
Thank you for your time.