powertop doesn't show any stats
Bug #1243194 reported by
Tixy (Jon Medhurst)
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linaro Android |
Won't Fix
|
Undecided
|
Unassigned | ||
Linaro PMWG Powertop |
Fix Committed
|
High
|
sanjay singh rawat |
Bug Description
When testing the 13.10 linux-linaro release on vexpress [1] I find that running powertop doesn't show any kind of statistics appart from a brief note about Network interface: eth0. This occurs on both TC2 and the A9 CoreTiles.
Powertop does work on the the 13.10 LSK release, so there problem may be difference between kernel versions 3.12-rc5 vs 3.10, or IKP vs big.LITTLE MP.
[1] https:/
Changed in linaro-powertop: | |
assignee: | nobody → sanjay singh rawat (sanjay-rawat) |
importance: | Undecided → High |
Changed in linaro-powertop: | |
status: | New → Fix Committed |
Changed in linaro-android: | |
status: | New → Won't Fix |
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I tried experimenting with a few combinations of components from the 13.10 release showing this bug and the 13.09 release which doesn't...
- The 13.10 powertop works on a 13.09 image
- The 13.09 powertop fails on a 13.10 image
- The 13.09 kernel (Linux 3.11) used with the 13.10 image makes powertop work.
- The 13.10 kernel (Linux 3.12-rc5) used with the 13.109 image makes powertop fail.
So the failures occur with either of the versions of powertop when run on the latest 3.12-rc5 based kernel.
I compared the kernel configs between the two kernel versions and the minor differences don't look like they should impact powertop.
My best guess is that some API or config default has changed in 13.12 and broke powertop..