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When I shut the lid of my laptop, it looks like it suspeds, but then when I open it up it automatically turns on, but starts a full normal boot process instead of resuming.

This in journalctl logs may be helpful

Mar 09 17:15:22 meowko kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.CHRG], AE_NOT_FOUND (20190703/psargs-330)
Mar 09 17:15:22 meowko kernel: No Local Variables are initialized for Method [PNOT]
Mar 09 17:15:22 meowko kernel: No Arguments are initialized for method [PNOT]
Mar 09 17:15:22 meowko kernel: ACPI Error: Aborting method \PNOT due to previous error (AE_NOT_FOUND) (20190703/psparse-529)
Mar 09 17:15:22 meowko kernel: ACPI Error: Aborting method \_SB.AC._PSR due to previous error (AE_NOT_FOUND) (20190703/psparse-529)
Mar 09 17:15:22 meowko kernel: ACPI Error: AE_NOT_FOUND, Error reading AC Adapter state (20190703/ac-115)
...
Mar 09 17:15:40 meowko systemd[1]: Reached target Sleep.
Mar 09 17:15:40 meowko systemd[1]: Starting Suspend...
Mar 09 17:15:40 meowko systemd-sleep[31358]: Suspending system...
Mar 09 17:15:40 meowko kernel: PM: suspend entry (deep)

There's nothing I can see in the boot logs - it just looks like a normal from cold boot.

Other posts seem to suggest that those ACPI errors are nothing to worry about.

The laptop used to suspend/resume OK. I think it might have stopped working shortly after installing cpufrequtils (and possibly related packages) when I tried a gnome shell extension or two to extend battery life. I've since uninstalled those (1) but the behaviour persists.

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  • I see same since kernel upgrade. output from 'uname -a' says kernel version '5.3.0-40-generic #32'. I'm going to remove that one and hope for best in future.
    – pauljohn32
    Mar 13, 2020 at 0:30

1 Answer 1

Reset to default
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Here's what I did to get things working again

  • Disable C-States and Intel SpeedStep in BIOS settings
  • reboot, test: suspend works.
  • Re-enable C-States and SpeedStep in BIOS
  • reboot, test: all works again.

(I'm on Linux meowko 5.3.0-40-generic #32)

What I think went wrong: Advice for others.

In an attempt to make my battery last longer, I had installed cpufreq gnome extension and also the cpufrequtils package.

It turns out that using that to reduce the number of online processors, if you have irqbalance installed (which I did), can really mess up your system. I've suggested that they change their UI to disallow this as it seems a bit of a foot-gun.

So the full list of what I did to fix this was:

  1. use the extension to ensure all cores were ON
  2. uninstall the extension (there's a manual process for that)
  3. uninstall cpufreq*
  4. do the above.

I then uninstalled irqbalance - opinion seems mixed about whether this is a good thing: lots of advice says "only for servers", but the package itself says good for multi processor SMP systems (I have 8 cores in my laptop). So I'm lost there.

Anyway, I uninstalled irqbalance, reinstalled the extension which seemed to work better this time. However whenever I put some cores offline the system got hot, was working at 40W (normally c20W), so I concluded that was not a good way to save power/battery, and uninstalled everything again. I've left irqbalance uninstalled for now.

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  • Puzzling to me. My system quit suspending with the kernel update and problem solved with downgrade. I have none of the packages you are concerned about. I suspect there is more in the story. Puzzling that more users don't report trouble.
    – pauljohn32
    Mar 14, 2020 at 6:09

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