In that case it's enabled again: $ dmesg | grep -i nvme [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-24-generic.efi.signed root=UUID=365f1a9c-9598-4ad5-a387-d02f771767a1 ro quiet splash nvme_core.default_ps_max_latency_us=0 nvme_core.dyndbg=+p vt.handoff=7 [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-24-generic.efi.signed root=UUID=365f1a9c-9598-4ad5-a387-d02f771767a1 ro quiet splash nvme_core.default_ps_max_latency_us=0 nvme_core.dyndbg=+p vt.handoff=7 [ 2.372993] nvme nvme0: pci function 0000:04:00.0 [ 2.587597] nvme0n1: p1 p2 [ 3.343336] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null) [ 3.548268] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
sudo nvme get-feature -f 0x0c -H /dev/nvme0 get-feature:0xc (Autonomous Power State Transition), Current value:0x000001 Autonomous Power State Transition Enable (APSTE): Enabled -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1699004 Title: APST gets enabled against explicit kernel option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1699004/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs