I was running KDE Neon on ThinkBook 15 G2 and had deep sleep working after adding mem_sleep_default=deep to GRUB_CMDLINE. It worked for a while until it didn’t. I didn’t do anything other than running regulat updates. Since couple weeks back, when going to sleep, it shows BIOS Recovery progress bar or something and restarts.

I switched to Debian and the behavior is the same. S2 sleep is next to useless as it drains something like 10% battery / hour, and the lap top is warm to touch.

  • Aurix@lemmy.world
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    11 months ago

    Yeah, my sleep schedule is pretty bad since the holiday… Oh, Oooooh.

  • fxdave@lemmy.ml
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    11 months ago

    You still had deep sleep until now? Lucky you. To me Dell forbided S3 way earlier.

  • stepanzak@iusearchlinux.fyi
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    11 months ago

    Is deep sleep the same thing as hibernation? Hibernation is broken for me even on new EndeavourOS install on two different laptops.

    • Tushta@programming.devOP
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      11 months ago

      No, hibernation saves state to disk, and turns the computer off, drawing no power. Deep sleep is what was for me just sleep until recently: it uses power to keep data in ram, so it’s faster to wake up than hibernation. The amount of power used is really small, so unless you don’t use your lap top for a couple of days, it won’t deplete the battery. New hardware has this new “S2 Idle” state, that is basically an “On” state minus the screen and it’s OS’s job to try to use as little power as possible usually by telling each and every device to chill as much as possible (this is my understanding, but don’t quote me on this). On Windows, with the first party device drivers, this sorta works OK + OS drops to deep sleep or hibernation depending on battery or something.

    • Tushta@programming.devOP
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      11 months ago

      It’s 2021 Lenovo ThinkBoot 15 G2 Intl with Intel i3-1115G4, 8GB onboard ram, integrated GPU and two NVME slots.

      Here are some lines from dmidecode if they mean anything to anyone:

      Getting SMBIOS data from sysfs.
      SMBIOS 3.3.0 present.
      Handle 0x0000, DMI type 0, 26 bytes
      BIOS Information
              Vendor: LENOVO
              Version: F8CN42WW(V2.05)
              Release Date: 06/28/2021
              Address: 0xE0000
              Runtime Size: 128 kB
              ROM Size: 16 MB
              Characteristics:
                      PCI is supported
                      BIOS is upgradeable
                      BIOS shadowing is allowed
                      ACPI is supported
                      USB legacy is supported
                      BIOS boot specification is supported
                      Targeted content distribution is supported
                      UEFI is supported
              BIOS Revision: 2.42
              Firmware Revision: 2.42
      
      Handle 0x0001, DMI type 1, 27 bytes
      System Information
              Manufacturer: LENOVO
              Product Name: 20VE
              Version: ThinkBook 15 G2 ITL
              SKU Number: LENOVO_MT_20VE_BU_idea_FM_ThinkBook 15 G2 ITL
              Family: ThinkBook 15 G2 ITL
      
      Handle 0x0002, DMI type 2, 15 bytes
      Base Board Information
              Manufacturer: LENOVO
              Product Name: LNVNB161216
              Version: SDK0J40700 WIN
      
      • Jumuta
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        11 months ago

        so cat /sys/power/mem_sleep or whatever outputs with the brackets on deep?

        • Tushta@programming.devOP
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          11 months ago

          Yeah, if the bracket is on deep, it crashes and enter the BIOS recovery thingy. If it’s s2idle, it does what it says on the tin.

  • skillissuer@discuss.tchncs.de
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    11 months ago

    have you updated EFI/BIOS recently? maybe S3 sleep is not supported on your system anymore and instead you get suspend-to-idle as S0ix (Modern Standby) notoriously shitty under linux. sometimes you can flip it back in EFI/BIOS

    • Tushta@programming.devOP
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      11 months ago

      I have a Windows dual boot, and Windows did install some updates, and Lenovo site indicates that the latest BIOS version was released mid November, so that could be it.