Hello. I just want to ask, I already tried search many resources, but I still can’t find a way to reduce battery drain while sleep on Ubuntu on Dell laptop.
I seen that it use S0ix, the new standard that many manufacturer use but when sleep it drains a lot battery, in just 6 hours the battery gone 0.
Any help is appreciated. This is company laptop and it requires me use ubuntu (I don’t like it but I don’t have options to changes OS/distro).
Thanks
Do a “cat /sys/kernel/debug/pmc_core/package_cstate_show”. You probably have figures for C2 and C3, and C6-C10 states are all zero. C10 is the golden S0ix state that you need for modern sleep.
I have a 13th gen intel Zenbook, and I spent a month fighting the same. My problem was that the bios setting for Intel VMD/Raid cockblocked sleep. If you have any bios options to disable that, or set storage to a more legacy mode, try it.
I check that C2 the only one has value when on battery.
Others are zero. Hmmm…
I remember that on new generations of Intel chips there is no support for S3 at the chipset level, which means that the operating system physically cannot enter the laptop into this mode. On Windows S0ix is better optimized, that’s all. Linux has problems with this.
Yeah. MS has stopped using S3 since Win8, so Bios vendors and OEMs have been letting it atrophy.
Even on windows S0ix is garbage
It is better than on Linux but definetly not very good.
Have it on work laptop… It wakes laptop for random things, if I put it in backpack I can find empty battery in the morning… Nope, s0ix does not work at all on windows anyway.
It works quite well on Microsoft Surface Pro. I think a lot depends on the specific manufacturer/drivers. But overall, yes, S0ix is much worse than S3.
Did you try S3 sleep?
More info here: https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate#Changing_suspend_method
It doesn’t have any ability to change to S3. I already tried all on that page, include suspend freeze
