kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

I'd like to perform a bisect to figure out what commit caused this
regression. We need to identify the earliest kernel where the issue
started happening as well as the latest kernel that did not have this
issue.

Can you test the following kernels and report back? We are looking for
the first kernel version that exhibits this bug:

v3.12 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/
If v3.12 final does not exhibit the bug, we should move on to testing some of the v3.13 release candidates.

v3.13-rc3: http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.13-rc3-trusty/

If v3.13-rc3 does not exhibit the bug then test v3.13-rc6:
v3.13-rc6: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc6-trusty/

If v3.13-rc3 does exhibit the bug then test v3.13-rc2:
v3.13-rc2: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc2-trusty

You don't have to test every kernel, just up until the kernel that first
has this bug.

Thanks in advance!


** Tags added: kernel-key

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

** Changed in: linux (Ubuntu)
   Importance: Low => High

** Tags removed: needs-bisect
** Tags added: performing-bisect

-- 
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/1283384

Title:
  [Lenovo ThinkPad T420s] regression idle power consumption 7W->12W

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Hi, didn't notice this before but looks like my laptop is consuming a
  lot more power than on saucy, and it's not caused by i915 locked on to
  higher gpu frequency (checked
  /sys/kernel/debug/dri/0/i915_cur_delayinfo).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-11-generic 3.13.0-11.31
  ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
  Uname: Linux 3.13.0-11-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tjaalton   2952 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Feb 22 11:27:13 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2011-09-12 (893 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
  MachineType: LENOVO 4170CTO
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-11-generic root=UUID=d855f499-6e26-4f5c-89df-81bcf94082bd ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-11-generic N/A
   linux-backports-modules-3.13.0-11-generic  N/A
   linux-firmware                             1.125
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2013-12-11 (72 days ago)
  dmi.bios.date: 09/13/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8CET55WW (1.35 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4170CTO
  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:bvr8CET55WW(1.35):bd09/13/2012:svnLENOVO:pn4170CTO:pvrThinkPadT420s:rvnLENOVO:rn4170CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4170CTO
  dmi.product.version: ThinkPad T420s
  dmi.sys.vendor: LENOVO

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