Thanks for following up - we can close this bug, I no longer have this
issue. I have attached info just for the record. I upgraded my system
BIOS and the problems went away.
$ sudo nvme id-ctrl /dev/nvme0
[sudo] password for ian:
NVME Identify Controller:
vid : 0x144d
ssvid : 0x144d
sn : S2FZNYAG801690
mn : PM951 NVMe SAMSUNG 1024GB
fr : BXV76D0Q
rab : 2
ieee : 002538
cmic : 0
mdts : 5
cntlid : 1
ver : 0
rtd3r : 0
rtd3e : 0
oaes : 0
ctratt : 0
oacs : 0x17
acl : 7
aerl : 3
frmw : 0x6
lpa : 0
elpe : 63
npss : 4
avscc : 0x1
apsta : 0x1
wctemp : 0
cctemp : 0
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 0
unvmcap : 0
rpmbs : 0
edstt : 35
dsto : 0
fwug : 0
kas : 0
hctma : 0
mntmt : 0
mxtmt : 0
sanicap : 0
hmminds : 0
hmmaxd : 0
sqes : 0x66
cqes : 0x44
maxcmd : 0
nn : 1
oncs : 0x1f
fuses : 0
fna : 0
vwc : 0x1
awun : 255
awupf : 0
nvscc : 1
acwu : 0
sgls : 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:4.20W operational enlat:30 exlat:30 rrt:1 rrl:1
rwt:1 rwl:1 idle_power:- active_power:-
ps 2 : mp:3.10W 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:500 exlat:5000 rrt:3 rrl:3
rwt:3 rwl:3 idle_power:- active_power:-
ps 4 : mp:0.0050W non-operational enlat:2000 exlat:22000 rrt:4 rrl:4
rwt:4 rwl:4 idle_power:- active_power:-
$ uname -a
Linux ian-XPS-15-9550 4.19.8-041908-generic #201812080831 SMP Sat Dec 8
13:34:18 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
System BIOS was upgraded to 1.9.0 - I believe this is the thing that
fixed the NVMe issues.
Thanks for following up, please feel free to close the bug if you have
the details you need (and hopefully these will help someone else).
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https://bugs.launchpad.net/bugs/1805816
Title:
APST quirk needed for PM951 Samsung 1TB NVMe Drive
Status in linux package in Ubuntu:
Incomplete
Bug description:
This is a fresh posted connected to a very similar now-solved bug
("APST quirk needed for Samsung 512GB NVMe drive"):
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184
My NVMe is the less-common 1TB version. It exhibits similar (possibly
identical) behaviour but has not yet been quirked.
I've followed up as Comment #101 but maybe I need to open this as a
new issue?
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184/comments/101
Specifically - using Kernel 4.19.0 on Mint 19.0 the default APST
settings caused read-only errors within minutes-1 hour, this is fatal.
Disabling APST solves the problem, I have this disabled in GRUB now.
Reducing the APST settings but not disabling them does not stop the
problem.
An example of the read-only result (copied from #101) that occurs if APST is
left in its default state:
Oct 31 11:33:04 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): mounted filesystem
with ordered data mode. Opts: (null)
Oct 31 11:33:04 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): re-mounted. Opts:
errors=remount-ro
Oct 31 11:33:05 ian-XPS-15-9550 kernel: EXT4-fs (nvme0n1p1): mounted
filesystem with ordered data mode. Opts: (null)
Oct 31 15:09:44 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): mounted filesystem
with ordered data mode. Opts: (null)
Oct 31 15:09:44 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): re-mounted. Opts:
errors=remount-ro
Oct 31 15:09:44 ian-XPS-15-9550 kernel: EXT4-fs (nvme0n1p1): mounted
filesystem with ordered data mode. Opts: (null)
I had tried `nvme_core.default_ps_max_latency_us=250` but the read-
only bug persists, it just takes longer to occur. Disabling APST with
`nvme_core.default_ps_max_latency_us=0` has solved the issue.
I've been using my laptop successfully (no read-only errors) for over
a week having disabled APST including many suspend/awaken cycles.
Prior to this every boot would crash and burn with read-only errors
within an hour or so.
This is the drive and kernel (copied from #101):
$ sudo nvme list
Node SN Model Namespace Usage Format FW Rev
---------------- --------------------
---------------------------------------- --------- --------------------------
---------------- --------
/dev/nvme0n1 S2FZNYAG801690 PM951 NVMe SAMSUNG 1024GB 1 314.10 GB / 1.02 TB
512 B + 0 B BXV76D0Q
$ uname -a
Linux ian-XPS-15-9550 4.19.0-041900-generic #201810221809 SMP Mon Oct 22
22:11:45 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -rd
Description: Linux Mint 19 Tara
Release: 19
I am of course happy to upload more info - let me know what's needed?
Could this be added as a quirk to the kernel please?
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: X-Cinnamon
DistroRelease: Linux Mint 19
InstallationDate: Installed on 2018-10-27 (32 days ago)
InstallationMedia: Linux Mint 19 "Tara" - Release amd64 20180717
Package: linux (not installed)
Tags: tara
Uname: Linux 4.19.0-041900-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: X-Cinnamon
DistroRelease: Linux Mint 19
InstallationDate: Installed on 2018-10-27 (32 days ago)
InstallationMedia: Linux Mint 19 "Tara" - Release amd64 20180717
Package: linux (not installed)
Tags: tara
Uname: Linux 4.19.0-041900-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
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