[Bug 1885730] Re: Please switch default kernel governor to ondemand, such that advanced userspace utilities such as game-mode can be later used to rev-up to to performance, or rev-down to powersave.

[Dimitri John Ledkov]

** Summary changed:

- Bring back ondemand.service or switch kernel default governor for pstate - pstate now defaults to performance governor
+ Please switch default kernel governor to ondemand, such that advanced userspace utilities such as game-mode can be later used to rev-up to to performance, or rev-down to powersave.

** Changed in: linux (Ubuntu Focal)
       Status: New => Triaged

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

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1885730

Title:
  Please switch default, hwe, oem kernel flavours governor to
  CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y , such that advanced userspace
  utilities such as game-mode can be later used to rev-up to to
  performance, or rev-down to powersave.

Status in linux package in Ubuntu:
  Triaged
Status in systemd package in Ubuntu:
  Invalid
Status in linux source package in Focal:
  Triaged
Status in systemd source package in Focal:
  Fix Released
Status in linux source package in Groovy:
  Triaged
Status in systemd source package in Groovy:
  Invalid

Bug description:
  [Impact]

   * Kernel should have sensible default governor set to
  CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y for the generic, hwe, raspi,
  riscv64, oem kernel flavours in Focal and Groovy+.

   * ondemand.service must not be shipped by systemd package

   * ppc64el, kvm flavour, cloud-kernels flavours should continue using
  performance governor.

   * Users should be given control to rev-up to performance, or rev-down
  to powersave using other tools, i.e. game-mode and/or similar CLI or
  GUI tools (these are scheduled to be integrated on Ubuntu platform
  later).

  [Test Case]

   * Boot ubuntu generic, hwe, or oem kernel

   * Check that default governor is ondemand

   * Check that ondemand.service is not active

  [Regression Potential]

   * ondemand governor is the best kernel default as recently analyzed
  by colin king, it gives a balance bootspeed and power, giving as
  responsive machines whilst not wasting power. It is the best
  experience we can give our users by default.

  [Other Info]

   * It is up to the user to elect/switch to powersave for maximum
  battery life, or to the performance for maximum processing power (i.e.
  gaming / computation).

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1885730/+subscriptions