Powertop fails to report number of wakeups/events

"Summary: 0.0 wakeups/second, 0.0 GPU ops/second and 0.0 VFS ops/sec" - powertop

Kernel team: could it be that we've dropped a kernel feature/interface that Powertop needs, thus causing Powertop to silently fail?

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 834725

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.22.1-0ubuntu2
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: sladen 1631 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf8220000 irq 46'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20dd,00100400'
   Controls : 32
   Simple ctrls : 20
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7RHT16WW-1.02'
   Mixer name : 'ThinkPad EC 7RHT16WW-1.02'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
DistroRelease: Ubuntu 11.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=54efcb99-bd31-4d0e-9094-e8ca0bc3b83b
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
IwConfig: Error: [Errno 2] No such file or directory
MachineType: LENOVO 776295G
Package: powertop 1.97-2
PackageArchitecture: i386
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-11-generic root=UUID=bb337846-9422-4826-b35c-641bca621295 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.0.0-11.17-generic 3.0.4
RelatedPackageVersions:
 linux-restricted-modules-3.0.0-11-generic N/A
 linux-backports-modules-3.0.0-11-generic N/A
 linux-firmware 1.60
RfKill: Error: [Errno 2] No such file or directory
Tags: oneiric running-unity oneiric running-unity
UdevDb: Error: [Errno 2] No such file or directory
Uname: Linux 3.0.0-11-generic i686
UpgradeStatus: Upgraded to oneiric on 2011-08-28 (16 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 07/03/2007
dmi.bios.vendor: LENOVO
dmi.bios.version: 7SET18WW (1.04 )
dmi.board.name: 776295G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7SET18WW(1.04):bd07/03/2007:svnLENOVO:pn776295G:pvrThinkPadX61Tablet:rvnLENOVO:rn776295G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 776295G
dmi.product.version: ThinkPad X61 Tablet
dmi.sys.vendor: LENOVO

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I suspect this is likely due to changes in powertop. The same issue was reported by another user as testing feedback for the powertop 2.0 beta release earlier this year:

http://article.gmane.org/gmane.linux.power-management.powertop/1959

I subsequently tested the Natty powertop-1.13-1.1ubuntu1 while running an Oneiric 3.0.0-11.17 kernel and confirm wakeups are being calculated:

     PowerTOP version 1.13 (C) 2007 Intel Corporation

Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 0.7%) Turbo Mode 5.5%
polling 0.9ms ( 0.0%) 2.80 Ghz 0.0%
C1 mwait 0.5ms ( 0.3%) 2.67 Ghz 0.0%
C2 mwait 0.8ms ( 4.0%) 1.87 Ghz 0.9%
C3 mwait 6.4ms (95.0%) 1197 Mhz 93.6%

Wakeups-from-idle per second : 203.8 interval: 15.0s

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

We have noted that there is a newer version of the development kernel currently in the release pocket than the one you tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

Thank you for your help.

linux-image-3.0.0-11-generic:
  Installed: 3.0.0-11.18
  Candidate: 3.0.0-11.18

Still an issue.

Also an issue with the mainline kernel from the PPA (201108310919).

I can confirm Leann's finding: Natty's Powertop version works fine in Oneiric.

Debin bug at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=620056 suggests Powertop 1.97 having problems with 64-bit systems. Currently cannot test it on a 32-bit system.

As I don't believe this is an issue with the kernel, I'm closing the linux task as Invalid. The powertop task remains open. Thanks.

@htorque -- i see the same missing stats on a 32 bit install. 0/0 wakeups per second, and no frequency stats.

Bug confirmed in powertop version 1.97-2 and kernel version 3.0.0-12-generic

I'm having the same issue, Idle stats and Frequency stats tabs are completely empty. Occurs on a 64bit Oneiric running on an HP Proliant N36L microserver. I'm attaching the lshw output.

affects me too. happy to help if any dumps would be helpful?

Too bad upstream marks this as fixed without adding some real information. I'm now confirming this for Precise.

I've just downloaded the latest version, and compiled from source - it works fine.

http://www.lesswatts.org/projects/powertop/download.php

1.13 is not the latest version, though. :-)

Won't the fixed version appear in the Oneiric updates then? Would seem strange to leave 11.10 with a broken version

It appears that there are some system files that are not present. Powertop is looking for the following files and not finding them:

"/sys/kernel/debug/tracing/events/power/power_frequency/id"
"/sys/kernel/debug/tracing/events/power/power_frequency/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/i915/i915_gem_request_submit/id"
"/sys/kernel/debug/tracing/events/i915/i915_gem_request_submit/id"
"/sys/kernel/debug/tracing/events/writeback/writeback_inode_dirty/id"
"/sys/kernel/debug/tracing/events/writeback/writeback_inode_dirty/id"

Incidentally, the following 'id' files are present:
root@Laptop1:/sys/kernel/debug/tracing/events/power# find . -name id -print
./cpu_idle/id
./cpu_frequency/id
./machine_suspend/id
./clock_enable/id
./clock_disable/id
./clock_set_rate/id
./power_domain_target/id

This is using version 1.9.7 on an older HP laptop.

--J

It looks like there are some commits to obsolete some of those power events. I can't quite tell if they are supposed to be in the 3.0 kernel or not.

See: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=25e41933b58777f2d020c3b0186b430ea004ec28

--J

We need to have EVENT_POWER_TRACING_DEPRECATED enabled in the kernel config to get the trace events that powertop is expecting. I've verified that this fixes the issue. powertop needs to be fixed as the tracepoints are going to be removed completely in the near future, but in the interim I'm going to send patches for oneiric and precise to enable the tracepoints.

just want to make sure everyone is quite clear: upgrading to the latest version of powertop fixes the problem. (apologies if everyone already knew that, just wanted to make sure no-one was wasting their time, no offense meant etc)

Harry P: Can you clarify what you mean by "latest version"? The latest version in oneiric doesn't seem to have a fix.

Given comments #33 and #34, I think he means 1.13, which isn't the latest version (that homepage could do with an update :-)).

Status changed to 'Confirmed' because the bug affects multiple users.

found on 32 bit oneric, HP laptop

Still happening in Oneiric with powertop 1.97; can you tell us which kernel version you committed the fix to?

AfC

On Sat, Nov 19, 2011 at 01:13:59PM -0000, Andrew Cowie wrote:
> Still happening in Oneiric with powertop 1.97; can you tell us which
> kernel version you committed the fix to?

The fix has been comitted but not released, so there is not yet any
version of the kernel for Oneiric which contains the fix. When there's a
build with the fix available for testing a comment will be posted to
this bug.

Precise, Quantal and Raring all have CONFIG_EVENT_POWER_TRACING_DEPRECATED=y. Regarding Saucy+, these events were removed with 3.9.

The Precise Pangolin has reached end of life, so this bug will not be fixed for that release