Ubuntu
powertop package

"unknown op" error on running powertop --auto-tune

Bug #1588747 reported by Christopher Barrington-Leigh
36
This bug affects 8 people
Affects Status Importance Assigned to Milestone
powertop
New
Undecided
auto-powertop
powertop (ALT Linux)
Unknown
Unknown
powertop (Ubuntu)
Confirmed
Low
Unassigned
powertop (openSUSE)
Fix Released
Medium

Bug Description

powertop reports an unknown op error. I cannot claim that it's not functioning normally, otherwise. Running it looks like this:

$ sudo powertop --auto-tune
Loaded 750 prior measurements
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
Devfreq not enabled
  unknown op '{'
Leaving PowerTOP

I don't see the error without --auto-tune.
This seems distinct from https://bugs.launchpad.net/ubuntu/+source/powertop/+bug/1541837

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: powertop 2.8-1build1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Jun 3 06:15:11 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-02-12 (111 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: powertop
UpgradeStatus: Upgraded to xenial on 2016-05-24 (9 days ago)

Revision history for this message
In , Gp-v (gp-v) wrote :

On current Factory, powertop --auto-tune issues a warning:

powertop --auto-tune
Loaded 7 prior measurements
RAPL device for cpu 0
RAPL device for cpu 0
RAPL device for cpu 0
Devfreq not enabled
  unknown op '{' <=================================

This is with powertop-2.7-1.1.x86_64 and kernel-default-3.17.4-1.2.x86_64.

Revision history for this message
In , Sywang (sywang) wrote :

This issue can also be reproduced by installing powertop-2.7-1.1.x86_64.rpm manually in openSUSE13.2.

Hi Marcus,

Seems the bugowner "<email address hidden>" who is not available anymore, would you please take a look at this issue? Or reassign it to the right person,Thanks!

Revision history for this message
In , Tiwai-r (tiwai-r) wrote :

This is a known bug of powertop itself, see the kown bug section:
   https://01.org/powertop/downloads/powertop-v2.7-0

"Know Bugs:

We plan to fix these bugs in future releases.

* Problem with traceevent lib it prints string: unknown op '{'. This bug doesn’t impact the correct functionality of PowerTOP."

Revision history for this message
Christopher Barrington-Leigh (cpbl) wrote :
Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in powertop (Ubuntu):
status: New → Confirmed
Alberto Salvia Novella (es20490446e)
Changed in powertop (Ubuntu):
importance: Undecided → Low
Revision history for this message
Ivan Zakharyaschev (imz) wrote :

Its discussion -- https://lists.01.org/pipermail/powertop/2016-April/001880.html :

From: Joe Konno joe.konno at linux.intel.com

Nope, you didn't miss anything. That's a bug. If you feel so inclined,
feel free to file a bug on our bugzilla (doesn't have to be elaborate).

https://app.devzing.com/powertopbugs/bugzilla/

On Wed, Mar 30, 2016 at 04:04:40AM +0100, Ciprian Tomoiaga wrote:

> When running powertop --configure for the first time, I saw this error on
> the output:
> Calibrating idle
> System is not available
> unknown op '{'
> System is not available
> Calibrating: disk usage
>
> The configuration continued though until completion.
> Did I miss anything?

https://bugzilla.suse.com/show_bug.cgi?id=911626#c2 :

This is a known bug of powertop itself, see the kown bug section:
   https://01.org/powertop/downloads/powertop-v2.7-0

"Know Bugs:

We plan to fix these bugs in future releases.

* Problem with traceevent lib it prints string: unknown op '{'. This bug doesn’t impact the correct functionality of PowerTOP."

Bug Watch Updater (bug-watch-updater)
Changed in powertop (openSUSE):
importance: Unknown → Medium
status: Unknown → Confirmed
Revision history for this message
Gábor Lipták (gliptak) wrote :

Corrected in Artful

➜ cat /etc/*release* | grep RELEASE
DISTRIB_RELEASE=17.10
~
➜ sudo powertop --auto-tune
modprobe cpufreq_stats failedLoaded 281 prior measurements
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
Devfreq not enabled
after count is 0 gpu c0
after count is 0 gpu rc6
after count is 0 gpu rc6p
after count is 0 gpu rc6pp
after count is 0 gpu c0
after count is 0 gpu rc6
after count is 0 gpu rc6p
after count is 0 gpu rc6pp
Leaving PowerTOP

Revision history for this message
In , Dominique Leuenberger aka DimStar (dimstar) wrote :

(In reply to Takashi Iwai from comment #2)
> This is a known bug of powertop itself, see the kown bug section:
> https://01.org/powertop/downloads/powertop-v2.7-0
>
> "Know Bugs:
>
> We plan to fix these bugs in future releases.
>
> * Problem with traceevent lib it prints string: unknown op '{'. This bug
> doesn’t impact the correct functionality of PowerTOP."

As far as I can find, this was fixed in powertop version 2.8 - released back in Nov 2015

Revision history for this message
In , Gp-v (gp-v) wrote :

Verified with powertop-2.12-1.1.x86_64 on current Tumbleweed.

Bug Watch Updater (bug-watch-updater)
Changed in powertop (openSUSE):
status: Confirmed → Fix Released
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