Not a fix for S0i3, but the latest X1 6th Gen BIOS (1.30) now has a
power option to enable S3 without having to patch.
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https://bugs.launchpad.net/bugs/1756105
Title:
X1 Carbon 6th gen
fyi almost all of the time after suspending it will wake up at some
point. but there is an small upside to that; closing/opening lid
"works". battery drain is definitely lower during suspend compared to
ec_no_wakeup=0
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thanks! that helps indeed. it's not completely preventing wake-up events
it seems, as usually after longer period it wakes up, but it definitely
helps reduce power consumption. I'll experiment some more to see if/how
I can influence the wake-up.
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please pass `acpi.ec_no_wakeup=1` on the Linux command line to reduce
the power consumption.
>From v4.13 S0ix is supported by kernel.
CPU and PCH are not in deep idle status when kernel set S0ix mode.
The further solution should be fixed by BIOS/EC, ThinkPad BIOS/EC team
already acked this
note that in previously mentioned thread on lenovo forum the workaround
used is to enable S3 by patching DSDT tables. for those interested: see
https://bbs.archlinux.org/viewtopic.php?id=234913
it seems to me the root cause is not so much S3 state support is
missing, but that S0i3 isn't
have the same issue. tried latest mainline http://kernel.ubuntu.com
/~kernel-ppa/mainline/v4.16-rc5/ but this does not fix the issue.
dmesg shows ACPI supports S0 S4 S5
/sys/power/mem_sleep shows only [s2idle]
quite a lot of people reporting same problem, see e.g.
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.16 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
