at 04:02, Rafael J. Wysocki <r...@rjwysocki.net> wrote:
On Thursday, July 25, 2019 9:52:59 PM CEST Keith Busch wrote:
On Thu, Jul 25, 2019 at 09:48:57PM +0200, Rafael J. Wysocki wrote:
NVME Identify Controller:
vid : 0x1c5c
ssvid : 0x1c5c
sn : MS92N171312902J0N
mn : PC401 NVMe SK hynix 256GB
fr : 80007E00
rab : 2
ieee : ace42e
cmic : 0
mdts : 5
cntlid : 1
ver : 10200
rtd3r : 7a120
rtd3e : 1e8480
oaes : 0x200
ctratt : 0
oacs : 0x17
acl : 7
aerl : 3
frmw : 0x14
lpa : 0x2
elpe : 255
npss : 4
avscc : 0x1
apsta : 0x1
wctemp : 352
cctemp : 354
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 0
unvmcap : 0
rpmbs : 0
edstt : 10
dsto : 0
fwug : 0
kas : 0
hctma : 0
mntmt : 0
mxtmt : 0
sanicap : 0
hmminds : 0
hmmaxd : 0
nsetidmax : 0
anatt : 0
anacap : 0
anagrpmax : 0
nanagrpid : 0
sqes : 0x66
cqes : 0x44
maxcmd : 0
nn : 1
oncs : 0x1f
fuses : 0x1
fna : 0
vwc : 0x1
awun : 7
awupf : 7
nvscc : 1
acwu : 7
sgls : 0
mnan : 0
subnqn :
ioccsz : 0
iorcsz : 0
icdoff : 0
ctrattr : 0
msdbd : 0
ps 0 : mp:6.00W operational enlat:5 exlat:5 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:- active_power:-
ps 1 : mp:3.80W operational enlat:30 exlat:30 rrt:1 rrl:1
rwt:1 rwl:1 idle_power:- active_power:-
ps 2 : mp:2.40W operational enlat:100 exlat:100 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:0.0070W non-operational enlat:1000 exlat:5000 rrt:3 rrl:3
rwt:3 rwl:3 idle_power:- active_power:-
Hm, nothing stands out as something we can use to determine if we should
skip the nvme specific settings or allow D3. I've no other ideas at the
moment for what we may check.
Well, do ASPM settings matter here?
Seems like it's a regression in the firmware.
The issue happens in version 80007E00 but not version 80006E00.
I am not sure how to downgrade it under Linux though.
The firmware changelog [1] is very interesting:
- Improves the performance of the solid-state drive (SSD) by distributing
power into the SSD efficiently according to the power state of the system.
[1]
https://www.dell.com/support/home/us/en/04/drivers/driversdetails?driverid=mcxm8
Kai-Heng
