On Wed, 2018-08-01 at 19:19 +0200, Nicolas George wrote: > Ben Hutchings (2018-07-30): > > Or perhaps by these changes listed in the changelog: > > > > * Improve battery life on laptops (Closes: #898629) > > Thanks to Hans de Goede <hdegoede@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. > > I had not thought the issues were direct consequences of intentional > changes. I should have, I am sorry for wasting your time that way. > > The audio issue is indeed fixed with: > > options snd-hda-intel power_save=0 > > in /etc/modprobe.d/snd_hda_intel.conf. Also, the 0.16 seconds delay is > probably only a problem with my very specific use case. It can be > forgotten. > > The non-responsiveness of the hard drive is NOT fixed by: > > options ahci mobile_lpm_policy=0 > > in /etc/modprobe.d/ahci.conf nor by by ahci.mobile_lpm_policy=0 on the > kernel command line (I checked, for both cases, > /sys/module/ahci/parameters/mobile_lpm_policy to see they were taken > into account). I still get: [...] > Do you think of anything I should try to get more diagnostics? [...] Someone else suggested this might be related to using "blk-mq", so could you try with these parameter: dm_mod.use_blk_mq=0 scsi_mod.use_blk_mq=0 Also, do you have laptop-mode-tools installed? Ben. -- Ben Hutchings If you seem to know what you are doing, you'll be given more to do.
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