(06-17-2020, 11:17 AM)CLC Wrote: Hi,
As I had the experience of a Crucial SSD on a RPI 4  (for booting de OS) and was very impress with the result, I got a Crucial P2 NVME PCIe 2280 M.2 SSD of 500 gb.
What it took 45 minutes to install in RPI 4 turned out to be a week (of confinement) to get working on PBP. The result is very good and can be compared with RPI 4.
I have tryed to add this hardware to the nvme listing with no result, so I will post here, excuse my ignorance.

$ sudo nvme id-ctrl /dev/nvme0
NVME Identify Controller:

ps    0 : mp:4.50W operational enlat:0 exlat:0 rrt:0 rrl:0
          rwt:0 rwl:0 idle_power:- active_power:-
ps    1 : mp:2.70W operational enlat:0 exlat:0 rrt:1 rrl:1
          rwt:1 rwl:1 idle_power:- active_power:-
ps    2 : mp:2.16W operational enlat:0 exlat:0 rrt:2 rrl:2
          rwt:2 rwl:2 idle_power:- active_power:-
ps    3 : mp:0.0700W non-operational enlat:1000 exlat:1000 rrt:3 rrl:3
          rwt:3 rwl:3 idle_power:- active_power:-
ps    4 : mp:0.0020W non-operational enlat:5000 exlat:55000 rrt:4 rrl:4
          rwt:4 rwl:4 idle_power:- active_power:-


The on demand consumption is enabled by default and my attempt to use other setting ended up with less battery life.

I have managed to boot from MMC and have root pointed to the NVMe by label. The so is Ubuntu mate as I tried  Manjaro but found it complicated to tune to my test, I am an ubuntu user for many years at home and work.

Thanks and regards,
Carlos.