Re: s2idle on kdell xps 9730 does go to sleep but laptop is warm

Marc MERLIN
2025-06-01T14:23:44Z

On Sat, May 31, 2025 at 07:16:26PM -0400, Theodore Ts'o wrote:
> On Sat, May 31, 2025 at 02:26:32PM -0700, Marc MERLIN wrote:
> > This is still a problem. Is there more info I can provide? For now it's
> > bad enough that I can't have the battery be in S3 sleep for 24H without
> > the batteries running out :-/
>
> I believe what is going on is that on more modern systems, it relies
> on the OS's drivers to power done various peripherals (e.g., graphics,
> SSD's, etc.) and this is no longer being done by the low-level
> firmware. With Linux the CPU is put to sleep, but there's a lot more
> on a modern mainboard than just the CPU....

Hi Ted, nice to hear from you. Yes, I agree that what you wrote totally
matches my experience and the reason why the laptop was so warm, even in
sleep mode.

So, given that this is not a new problem, are there any new options in
linux drivers and/or kernel options to have linux do this (shut down
each subsystem)?

Thanks,
Marc