Hi, I have a HP Spectre x360 13t-ap000, with the exact same problem. I also have NVMe and it drains lots of power under s2idle, and the only option I have in /sys/power/mem_sleep is that one.
I am running Arch Linux.
$ uname -a
Linux behemoth 5.1.8-arch1-1-ARCH #1 SMP PREEMPT Sun Jun 9 20:28:28 UTC 2019 x86_64 GNU/Linux
Hi, I have a HP Spectre x360 13t-ap000, with the exact same problem. I also have NVMe and it drains lots of power under s2idle, and the only option I have in /sys/power/ mem_sleep is that one.
I am running Arch Linux.
$ uname -a
Linux behemoth 5.1.8-arch1-1-ARCH #1 SMP PREEMPT Sun Jun 9 20:28:28 UTC 2019 x86_64 GNU/Linux