Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.7 kernel[0].
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'. 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/v4.7 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1610028/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
