Comment 0 for bug 1705748

Originally thought my issue was same as this:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184
but requested to report as separate bug

System becomes unusable at seemingly random times but especially after resume from suspend due to disk 'disappearing' becoming inaccessible, with hundreds of I/O errors logged.

After viewing the above bug report yesterday as a quick temporary fix I added kernel param, updated grub, etc with:
GRUB_CMDLINE_LINUX_DEFAULT="nvme_core.default_ps_max_latency_us=0"

System appears to have been stable for the last day, but is presumably using more power than it should.

System, drive details below:

M2 nvme drive: Samsung SSD 960 EVO 500GB

Ubuntu 4.10.0-26.30~16.04.1-generic 4.10.17

M/B Asus Prime B350m-A
Ryzen 1600 cpu

Jul 20 16:32:59 phs08 kernel: [ 190.893571] INVALID_DEVICE_REQUEST device=00:00.0 address=0xfffffffdf8000000 flags=0x0a00]
Jul 20 16:33:05 phs08 kernel: [ 197.010928] nvme 0000:01:00.0: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0xffff
Jul 20 16:33:05 phs08 kernel: [ 197.046980] pci_raw_set_power_state: 4 callbacks suppressed
Jul 20 16:33:05 phs08 kernel: [ 197.046985] nvme 0000:01:00.0: Refused to change power state, currently in D3
Jul 20 16:33:05 phs08 kernel: [ 197.047163] nvme nvme0: Removing after probe failure status: -19
Jul 20 16:33:05 phs08 kernel: [ 197.047182] nvme0n1: detected capacity change from 500107862016 to 0
Jul 20 16:33:05 phs08 kernel: [ 197.047793] blk_update_request: I/O error, dev nvme0n1, sector 0

nvme list

/dev/nvme0n1 S3EUNX0J305518L Samsung SSD 960 EVO 500GB 1.2 1 125.20 GB / 500.11 GB 512 B + 0 B 2B7QCXE7

sudo nvme id-ctrl /dev/nvme0

NVME Identify Controller:
vid : 0x144d
ssvid : 0x144d
sn : S3EUNX0J305518L
mn : Samsung SSD 960 EVO 500GB
fr : 2B7QCXE7
rab : 2
ieee : 002538
cmic : 0
mdts : 9
cntlid : 2
ver : 10200
rtd3r : 7a120
rtd3e : 4c4b40
oaes : 0
oacs : 0x7
acl : 7
aerl : 3
frmw : 0x16
lpa : 0x3
elpe : 63
npss : 4
avscc : 0x1
apsta : 0x1
wctemp : 350
cctemp : 352
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 500107862016
unvmcap : 0
rpmbs : 0
sqes : 0x66
cqes : 0x44
nn : 1
oncs : 0x1f
fuses : 0
fna : 0x5
vwc : 0x1
awun : 255
awupf : 0
nvscc : 1
acwu : 0
sgls : 0
ps 0 : mp:6.04W operational enlat:0 exlat:0 rrt:0 rrl:0
          rwt:0 rwl:0 idle_power:- active_power:-
ps 1 : mp:5.09W operational enlat:0 exlat:0 rrt:1 rrl:1
          rwt:1 rwl:1 idle_power:- active_power:-
ps 2 : mp:4.08W operational enlat:0 exlat:0 rrt:2 rrl:2
          rwt:2 rwl:2 idle_power:- active_power:-
ps 3 : mp:0.0400W non-operational enlat:210 exlat:1500 rrt:3 rrl:3
          rwt:3 rwl:3 idle_power:- active_power:-
ps 4 : mp:0.0050W non-operational enlat:2200 exlat:6000 rrt:4 rrl:4
          rwt:4 rwl:4 idle_power:- active_power:-