Hi Kai-Heng, thanks!
Overnight I've used `nvme_core.default_ps_max_latency_us=0` in GRUB with
no read-only crashes (everything has been smooth). I left the machine
awake all night, I've since suspended & awoken it twice, all seems to be
ok.
As expected all APSTE is disabled:
`
$ sudo 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
.................
Entry[ 1]
.................
Idle Time Prior to Transition (ITPT): 0 ms
Idle Transition Power State (ITPS): 0
.................
...
`
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1678184
Title:
APST quirk needed for Samsung 512GB NVMe drive
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Yakkety:
Fix Released
Status in linux source package in Zesty:
Fix Released
Bug description:
APST support just landed in the latest Zesty kernel (4.10.0-14.16) as
part of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664602.
That patch has a quirk for certain 256GB Samsung drives found in Dell
laptops that do not behave well when APST is enabled. I am
experiencing the same symptoms with the same model laptop except with
a 512GB Samsung. Prior to manually disabling APST the drive would die
and system would go down in flames with I/O errors within 20 to 40
minutes of boot.
$ sudo nvme list
Node SN Model
Namespace Usage Format FW Rev
---------------- --------------------
---------------------------------------- --------- --------------------------
---------------- --------
/dev/nvme0n1 ************** PM951 NVMe SAMSUNG 512GB
1 500.20 GB / 512.11 GB 512 B + 0 B BXV76D0Q
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.10.0-14-generic 4.10.0-14.16
ProcVersionSignature: Ubuntu 4.10.0-14.16-generic 4.10.3
Uname: Linux 4.10.0-14-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ajclayton 3305 F.... pulseaudio
CurrentDesktop: Unity:Unity7
Date: Fri Mar 31 09:42:38 2017
InstallationDate: Installed on 2012-09-08 (1665 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
MachineType: Dell Inc. XPS 15 9550
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-14-generic
root=UUID=779e5929-5ffb-49b1-9786-1adcde824b7d ro rootflags=subvol=@ noprompt
nouveau.modeset=0 log_buf_len=20M
RelatedPackageVersions:
linux-restricted-modules-4.10.0-14-generic N/A
linux-backports-modules-4.10.0-14-generic N/A
linux-firmware 1.164
SourcePackage: linux
UpgradeStatus: Upgraded to zesty on 2017-03-07 (23 days ago)
dmi.bios.date: 04/07/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.02.00
dmi.board.name: 0N7TVV
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 15 9550
dmi.sys.vendor: Dell Inc.
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