I have the same problem on Thinkpad X1 Carbon 5th gen with NVMe drive. I
get read-only rootfs every time I suspend my laptop (e.g. by closing the
laptop's lid).
Things were fine under Ubuntu Xenial 16.04. Once I upgraded to the
latest LTS 18.04 the problem started. I was using the toshiba NVMe drive
(256GB). Then I upgraded to the following drive (samsung ssd 970 evo
500GB) however the problem persisted:
# nvme id-ctrl /dev/nvme0
NVME Identify Controller:
vid : 0x144d
ssvid : 0x144d
sn : S4EVNG0M217854Y
mn : Samsung SSD 970 EVO Plus 500GB
fr : 1B2QEXM7
rab : 2
ieee : 002538
cmic : 0
mdts : 9
cntlid : 4
ver : 10300
rtd3r : 30d40
rtd3e : 7a1200
oaes : 0
ctratt : 0
oacs : 0x17
acl : 7
aerl : 3
frmw : 0x16
lpa : 0x3
elpe : 63
npss : 4
avscc : 0x1
apsta : 0x1
wctemp : 358
cctemp : 358
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 500107862016
unvmcap : 0
rpmbs : 0
edstt : 35
dsto : 0
fwug : 0
kas : 0
hctma : 0x1
mntmt : 356
mxtmt : 358
sanicap : 0
hmminds : 0
hmmaxd : 0
sqes : 0x66
cqes : 0x44
maxcmd : 0
nn : 1
oncs : 0x5f
fuses : 0
fna : 0x5
vwc : 0x1
awun : 1023
awupf : 0
nvscc : 1
acwu : 0
sgls : 0
subnqn :
ioccsz : 0
iorcsz : 0
icdoff : 0
ctrattr : 0
msdbd : 0
ps 0 : mp:7.80W operational enlat:0 exlat:0 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:- active_power:-
ps 1 : mp:6.00W operational enlat:0 exlat:0 rrt:1 rrl:1
rwt:1 rwl:1 idle_power:- active_power:-
ps 2 : mp:3.40W 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:210 exlat:1200 rrt:3 rrl:3
rwt:3 rwl:3 idle_power:- active_power:-
ps 4 : mp:0.0100W non-operational enlat:2000 exlat:8000 rrt:4 rrl:4
rwt:4 rwl:4 idle_power:- active_power:-
I tried different kernels. 4.15.18 , 4.20.17 , 5.1.15.
Currently on:
4.15.18-041518-generic #201804190330 SMP Thu Apr 19 07:34:21 UTC 2018 x86_64
x86_64 x86_64 GNU/Linux
None seem to fix it.
I tried the suggested solution by setting nvme_core.default_ps_max_latency_us=
to 5500, 200, and 0
Currently using:
nvme_core.default_ps_max_latency_us=0
APST is now disabled:
# nvme get-feature -f 0x0c -H /dev/nvme0
get-feature:0xc (Autonomous Power State Transition), Current value:00000000
Autonomous Power State Transition Enable (APSTE): Disabled
Auto PST Entries .................
Entry[ 0]
.................
Idle Time Prior to Transition (ITPT): 0 ms
Idle Transition Power State (ITPS): 0
The problem persists however.... As soon as I close the lid / suspend the
laptop, it won't recover from this suspend, instead it hangs with the black
screen with
EXT4-fs error (device nvme0n1p2) : I/O error while writing superblock
and so on...
Is there any solution to this yet?
Thanks
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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:
Won't Fix
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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