kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue occur in a previous version of Ubuntu, or is this a new
issue?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.12 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'.

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/v3.12-rc7-saucy/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Tags added: kernel-da-key

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https://bugs.launchpad.net/bugs/1246793

Title:
  Battery charging slows down laptop

Status in “linux” package in Ubuntu:
  New

Bug description:
  Following up on Bug #962712 which was marked as invalid, instead of
  fixed (gee, thanks...) I'm using Ubuntu 13.10 and this still happening
  pretty badly.

  Steps to reproduce:

  1) Unplug laptop, plug-in second monitor, drain battery until OS warns user and asks her to plugin laptop
  2) Plugin laptop

  Expected: Laptop works normally
  Actual: Laptop slows down severely.

  -=-=-

  Drilling down, run `cpufreq-info`

  Expected:
  driver: acpi-cpufreq [...]
  current policy: frequency should be within 800 MHz and 2.80 GHz.

  Actual: 
  driver: acpi-cpufreq [...]
  current policy: frequency should be within 800 MHz and 800 MHz

  -=-=-

  Drilling down, this is known, lingering problem, and is not "invalid",
  please triage instead of sweeping under the rug

   * http://ubuntuforums.org/showthread.php?t=1921292
   * http://askubuntu.com/questions/186387/laptop-slows-down-while-charging-battery
   * http://bit.ly/17vgUO0
   * ...

  -=-=-

  Thank you for your consideration.

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