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. https://forums.lenovo.com/t5/Linux-Discussion/X1-Carbon-Gen-6-cannot- enter-deep-sleep-S3-state-aka-Suspend-to/m-p/3998182 ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756105 Title: X1 Carbon 6th gen S0i3 sleep broken To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1756105/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
