Control: tag -1 moreinfo

On Sat, 2018-07-28 at 12:15 +0200, Nicolas George wrote:
> Package: src:linux
> Version: 4.17.8-1
> Severity: normal
> 
> Dear Maintainer,
> 
> Since kernel 4.17.8-1 have migrated to testing, I have been experiencing the
> two following issues, that I believe are related:
> 
> - Processes doing disk accesses sometimes go into D state, while the
>   disk itself is idle and the kernel reports nothing spurious (in
>   particular no hardware timeout nor bus reset), and stay there several
>   seconds or many minutes.
> 
> - The audio device takes a noticeable time to open.
> 
> Both could be explained by some kind of interrupt problem.
[...]

Or perhaps by these changes listed in the changelog:

  * Improve battery life on laptops (Closes: #898629)
    Thanks to Hans de Goede <hdego...@redhat.com>
    - ATA: A new SATA link-powermanagement-policy will be the default on all
      Intel mobile chipsets. This can be reverted by passing 
      "ahci.mobile_lpm_policy=0" on the kernel commandline.
    - sound: Enable Intel HDA codec power-saving by default with a 1 second
      timeout. This can be overridden by passing "snd_hda_intel.power_save=0"
      on the kernel commandline (0 is previously default).

The hints there are meant as workarounds.  Let us know if they work for
you.  We can disable power-saving by default on specific hardware where
it doesn't work properly.

Ben.

-- 
Ben Hutchings
Tomorrow will be cancelled due to lack of interest.

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