Comment 7 for bug 1610028

Thank you for response, will do it tonight and update bug with results.

On 2 November 2016 at 14:13, Christopher M. Penalver <
<email address hidden>> wrote:

> bostjan, to keep this relevant to upstream, one would want check for,
> and test the latest mainline kernel (now 4.9-rc3) as it is released.
>
> Could you please advise?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1610028
>
> Title:
> Power usage 50% worse than 14.04 on MacBook Air 6,2
>
> Status in linux package in Ubuntu:
> Incomplete
>
> Bug description:
> Hi,
>
> I do not know which package/condition to attribute this behaviour to,
> but MBA running Ubuntu 14.04 is using about 50% of power that needs to
> be delivered for 16.04. (minumum 10W power draw vs minimum ~5W draw).
>
> Otherwise 16.04 works well.
>
> Any clue how to tackle this?
>
>
> Best,
> b.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 16.04
> Package: linux-image-4.4.0-31-generic 4.4.0-31.50
> ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
> Uname: Linux 4.4.0-31-generic x86_64
> NonfreeKernelModules: wl
> ApportVersion: 2.20.1-0ubuntu2.1
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: bostjan 3629 F.... pulseaudio
> /dev/snd/controlC1: bostjan 3629 F.... pulseaudio
> Date: Fri Aug 5 02:29:33 2016
> EcryptfsInUse: Yes
> HibernationDevice: RESUME=UUID=a1169bd1-3502-4168-a9f9-639255a224c0
> InstallationDate: Installed on 2016-08-04 (0 days ago)
> InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
> (20160420.1)
> MachineType: Apple Inc. MacBookAir6,2
> ProcFB: 0 inteldrmfb
> ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-31-generic.efi.signed
> root=/dev/mapper/as--u--vg-root ro quiet splash vt.handoff=7
> PulseList:
> Error: command ['pacmd', 'list'] failed with exit code 1: Home
> directory not accessible: Permission denied
> No PulseAudio daemon running, or not running as session daemon.
> RelatedPackageVersions:
> linux-restricted-modules-4.4.0-31-generic N/A
> linux-backports-modules-4.4.0-31-generic N/A
> linux-firmware 1.157.2
> SourcePackage: linux
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 02/07/2014
> dmi.bios.vendor: Apple Inc.
> dmi.bios.version: MBA61.88Z.0099.B09.1402071141
> dmi.board.asset.tag: Base Board Asset Tag#
> dmi.board.name: Mac-7DF21CB3ED6977E5
> dmi.board.vendor: Apple Inc.
> dmi.board.version: MacBookAir6,2
> dmi.chassis.type: 10
> dmi.chassis.vendor: Apple Inc.
> dmi.chassis.version: Mac-7DF21CB3ED6977E5
> dmi.modalias: dmi:bvnAppleInc.:bvrMBA61.88Z.0099.B09.1402071141:bd02/07/
> 2014:svnAppleInc.:pnMacBookAir6,2:pvr1.0:rvnAppleInc.:rnMac-
> 7DF21CB3ED6977E5:rvrMacBookAir6,2:cvnAppleInc.:
> ct10:cvrMac-7DF21CB3ED6977E5:
> dmi.product.name: MacBookAir6,2
> dmi.product.version: 1.0
> dmi.sys.vendor: Apple Inc.
>
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