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Intel has removed support for S3 sleep from their platform, so every laptop with 11th+ generation Intel is plagued with this issue. Dell even put out an advisor

by xvello 4y ago

Intel has removed support for S3 sleep from their platform, so every laptop with 11th+ generation Intel is plagued with this issue. Dell even put out an advisory that a sleeping laptop is not safe to store in a backpack anymore! AMD still supports S3 sleep on their Ryzen processors, but you'll need to check user feedback to make sure that the vendor did their job implementing it properly. In S3 sleep, the UEFI/BIOS is responsible for suspending and resuming hardware state. If not implemented correctly, you'll have high battery drain (components not suspended) or bugs on resume. Lenovo had dropped the ball on that front repeatedly, with the last two gens of T14 requiring BIOS updates to fix issues.

esaym 4y ago
>Intel has removed support for S3 sleep from their platform Wait what? How is that allowed?? What is the replacement?
- xvello 4y ago
  > How is that allowed?? Looks like they can get away with it ¯\_O_/¯ > What is the replacement? S0ix sleep (named s2idle in Linux), where the OS is responsible for suspending / resuming all non-essential functions. Work is ongoing on the Kernel and drivers to improve it, but there is a long way to go (yay Monday mornings with an empty battery because the power draw is still > 1W). Even Windows is unable to make it correctly work without killing the battery overnight, so they now default to hibernating to disk after a couple of hours. This strategy is also possible with Linux, but making it work alongside full disk encryption is tricky: https://wiki.archlinux.org/title/Dm-crypt/Swap_encryption#With_suspend-to-disk_support https://wiki.archlinux.org/title/Dm-crypt/Swap_encryption#Wi...
  - esaym 4y ago
    That sounds really awful...
lhl 4y ago
While this is true for most vendors, this is not universally true. Lenovo specifically has an S3 BIOS option for some of their Tiger Lake Thinkpads (since they're Linux certified), although as you mention, it isn't always perfect: https://forums.lenovo.com/topic/view/27/5089860 https://forums.lenovo.com/topic/view/27/5089860 There can be lots of EC/BIOS issues for suspending, IMO it's one of the best arguments for going for a Linux-first vendor (Tuxedo, System 76, Slimbook, etc), as you know that their top priority should be to get basic stuff working on Linux.

by xvello 4y ago

esaym 4y ago

>Intel has removed support for S3 sleep from their platform Wait what? How is that allowed?? What is the replacement?

xvello 4y ago
> How is that allowed?? Looks like they can get away with it ¯\_O_/¯ > What is the replacement? S0ix sleep (named s2idle in Linux), where the OS is responsible for suspending / resuming all non-essential functions. Work is ongoing on the Kernel and drivers to improve it, but there is a long way to go (yay Monday mornings with an empty battery because the power draw is still > 1W). Even Windows is unable to make it correctly work without killing the battery overnight, so they now default to hibernating to disk after a couple of hours. This strategy is also possible with Linux, but making it work alongside full disk encryption is tricky: https://wiki.archlinux.org/title/Dm-crypt/Swap_encryption#With_suspend-to-disk_support https://wiki.archlinux.org/title/Dm-crypt/Swap_encryption#Wi...
- esaym 4y ago
  That sounds really awful...

lhl 4y ago

While this is true for most vendors, this is not universally true. Lenovo specifically has an S3 BIOS option for some of their Tiger Lake Thinkpads (since they're Linux certified), although as you mention, it isn't always perfect: https://forums.lenovo.com/topic/view/27/5089860 https://forums.lenovo.com/topic/view/27/5089860 There can be lots of EC/BIOS issues for suspending, IMO it's one of the best arguments for going for a Linux-first vendor (Tuxedo, System 76, Slimbook, etc), as you know that their top priority should be to get basic stuff working on Linux.