[MX4] Battery drains quickly/device overheats
Bug #1469369 reported by
Sturm Flut
This bug affects 29 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Canonical System Image |
Confirmed
|
High
|
Unassigned |
Bug Description
Arale has poor battery life compared to krillin, despite the battery having a 50% higher capacity. Not only does the device heat up considerably during normal use, also standby times are quite short for such a device. Here is some data I've collected:
arale fully charged, all radios off: 93% remaining after 9 hours of idling on my desk
arale fully charged, WiFi and 3G on: 72% remaining after 9 hours of idling on my desk
The second data set translates to a standby time of about 30 hours, while krillin can do several days with radios enabled.
I've already tried to do some debugging using /proc/timer_stats, cpustat and friends, but haven't found anything particularly interesting.
Changed in canonical-devices-system-image: | |
assignee: | nobody → Vicamo Yang (vicamo) |
importance: | Undecided → Critical |
Changed in canonical-devices-system-image: | |
status: | New → Incomplete |
status: | Incomplete → New |
tags: | added: power-bugs |
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I had a single process running amok on a single core for 23 minutes today. The whole device, really all of the surface, heated up so much that it was uncomfortable to touch it. It is hard to believe that a single CPU core can cause this amount of power dissipation.