Laptop luminosity switch makes high CPU usage

[Zisu Andrei]

Hello,

The bug is as follows:

If I try and switch the luminosity setting of my laptop my CPU goes to 100% usage for 3-10 minutes, and the luminosity notification in unity (the one in the top right corner) flashes for the same amount of time.

I am not sure if it is a linux bug or how to trace it. Please help.

My laptop is an MSI EX705-X.
---
ApportVersion: 2.6.1-0ubuntu9
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: matzipan 2089 F.... pulseaudio
 /dev/snd/controlC0: matzipan 2089 F.... pulseaudio
DistroRelease: Ubuntu 12.10
HibernationDevice: RESUME=UUID=ef237065-cd34-4f9b-bcaf-cb850b466508
InstallationDate: Installed on 2012-11-05 (68 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MachineType: Micro-Star International EX705
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic root=UUID=0b26ea65-9761-4246-87dd-a0580e519414 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-21-generic N/A
 linux-backports-modules-3.5.0-21-generic N/A
 linux-firmware 1.95
Tags: quantal running-unity
Uname: Linux 3.5.0-21-generic i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 12/02/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080014
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: MS-1719x
dmi.board.vendor: MSI
dmi.board.version: Ver 1.000
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd12/02/2008:svnMicro-StarInternational:pnEX705:pvrVer1.000:rvnMSI:rnMS-1719x:rvrVer1.000:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: EX705
dmi.product.version: Ver 1.000
dmi.sys.vendor: Micro-Star International

[Brad Figg (brad-figg)]

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

apport-collect 1098912

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.

[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Zisu Andrei (matzipan)]

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[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.8 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc3-raring/

[Zisu Andrei (matzipan)]

Tried v3.8-rc4 today. Bug is still there.

[Zisu Andrei (matzipan)]

Any update on this issue? It is really bothering.

[Zisu Andrei (matzipan)]

I should probably say, temporally, this issue did not appear until probably 11.04.

[Zisu Andrei (matzipan)]

The issue was not fixed. and it is very upsetting. I will do anything to help debugging this, but I need guidance.

On an unrelated note, it seems that changing the kernel to v3.8-rc4 made "suspend" actually resume from the sleep state.

[Zisu Andrei (matzipan)]

Updated to 13.04 and 3.8.0.9 today. The bug is still here.

[Zisu Andrei (matzipan)]

Very important observation: When the lock screen is activated (after a screensaver, or manually from the system menu), it stops manifesting!

I am guessing it has something to do with Unity?

[Andrea Azzarone (azzar1)]

Unity has nothing to do with that notification bubble and I don't know the correct project to target.

[Zisu Andrei (matzipan)]

This is aimed at the Linux package and not Unity.

Zisu Andrei

On 23 October 2013 14:51, Andrea Azzarone <email address hidden>wrote:

> Unity has nothing to do with that notification bubble and I don't know
> the correct project to target.
>
> ** No longer affects: unity
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1098912
>
> Title:
> Laptop luminosity switch makes high CPU usage
>
> Status in “linux” package in Ubuntu:
> Incomplete
>
> Bug description:
> Hello,
>
> The bug is as follows:
>
> If I try and switch the luminosity setting of my laptop my CPU goes to
> 100% usage for 3-10 minutes, and the luminosity notification in unity
> (the one in the top right corner) flashes for the same amount of time.
>
> I am not sure if it is a linux bug or how to trace it. Please help.
>
> My laptop is an MSI EX705-X.
> ---
> ApportVersion: 2.6.1-0ubuntu9
> Architecture: i386
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC1: matzipan 2089 F.... pulseaudio
> /dev/snd/controlC0: matzipan 2089 F.... pulseaudio
> DistroRelease: Ubuntu 12.10
> HibernationDevice: RESUME=UUID=ef237065-cd34-4f9b-bcaf-cb850b466508
> InstallationDate: Installed on 2012-11-05 (68 days ago)
> InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386
> (20121017.2)
> MachineType: Micro-Star International EX705
> MarkForUpload: True
> Package: linux (not installed)
> ProcFB: 0 radeondrmfb
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic
> root=UUID=0b26ea65-9761-4246-87dd-a0580e519414 ro quiet splash vt.handoff=7
> ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
> RelatedPackageVersions:
> linux-restricted-modules-3.5.0-21-generic N/A
> linux-backports-modules-3.5.0-21-generic N/A
> linux-firmware 1.95
> Tags: quantal running-unity
> Uname: Linux 3.5.0-21-generic i686
> UpgradeStatus: No upgrade log present (probably fresh install)
> UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
> dmi.bios.date: 12/02/2008
> dmi.bios.vendor: American Megatrends Inc.
> dmi.bios.version: 080014
> dmi.board.asset.tag: To Be Filled By O.E.M.
> dmi.board.name: MS-1719x
> dmi.board.vendor: MSI
> dmi.board.version: Ver 1.000
> dmi.chassis.asset.tag: To Be Filled By O.E.M.
> dmi.chassis.type: 10
> dmi.chassis.vendor: To Be Filled By O.E.M.
> dmi.chassis.version: To Be Filled By O.E.M.
> dmi.modalias:
> dmi:bvnAmericanMegatrendsInc.:bvr080014:bd12/02/2008:svnMicro-StarInternational:pnEX705:pvrVer1.000:rvnMSI:rnMS-1719x:rvrVer1.000:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
> dmi.product.name: EX705
> dmi.product.version: Ver 1.000
> dmi.sys.vendor: Micro-Star International
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1098912/+subscriptions
>

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]