*** MyDigitalSSD SBXe 960 GB success story ***

[as400]

OK, so let's start with the information that APST is enabled on Manjaro.

Looks like power states are a bit strange because the drive reports completely different states than measured in tests on legitreviews (and my drive is even newer than that in test and should be more "eco" - hence name SBXe):



The report from drive:

ps    0 : mp:7.90W operational enlat:600 exlat:600 rrt:0 rrl:0

          rwt:0 rwl:0 idle_power:0.7250W active_power:7.02W
ps    1 : mp:7.90W operational enlat:600 exlat:600 rrt:1 rrl:1
          rwt:1 rwl:1 idle_power:0.7250W active_power:7.02W
ps    2 : mp:7.90W operational enlat:600 exlat:600 rrt:2 rrl:2
          rwt:2 rwl:2 idle_power:0.7250W active_power:7.02W
ps    3 : mp:0.1000W non-operational enlat:1000 exlat:1000 rrt:3 rrl:3
          rwt:3 rwl:3 idle_power:0.7250W active_power:7.02W
ps    4 : mp:0.0050W non-operational enlat:5000 exlat:100000 rrt:4 rrl:4
          rwt:4 rwl:4 idle_power:0.7250W active_power:7.02W

After some inactivity:

[root@pbp ~]# nvme get-feature /dev/nvme0 -f 2

get-feature:0x2 (Power Management), Current value:0x000004

The "save" feature does not work:

NVMe status: FEATURE_NOT_SAVEABLE: The Feature Identifier specified does not support a saveable value(0x210d)


The drive uses some rare (AFAIK) controller - Phison E13T. But on the other hand supports everything on power management one can expect - APST, ASPM, L1.2.