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.

  • Jordan_U@lemmy.ml
    ·
    6 months ago

    This talk introduces sleepgraph, a tool that might help you debug your s2ram issues.

    The talk may also convince you that, for your specific hardware, s2idle might be better than s2ram:

    https://youtu.be/Pv5KvN0on0M

  • fxdave@lemmy.ml
    ·
    6 months ago

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

  • skillissuer@discuss.tchncs.de
    ·
    6 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