I don't think that's necessary, the default value (25000) is larger than
23000, so PS4 is enabled in this case.
Thank you for all the testing - this information will be useful for
patch author, Dell and Samsung.
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@Kai-Heng Feng: Almost same here, the whole working day without any
issues. should I do a negative test with 23000 to confirm that ps/4 is
the issue for Samsung PM951?
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I have an xps15 9550 same as above, same controller, same issue. I set
nvme_core.default_ps_max_latency_us=6000 this morning and have ~1 hour
right now with no crash. I'll continue to run it today and report back.
The only issue I have seen with the 6k setting which I didn't not see
with a
@Kai-heng Feng: I have a precision 5510 and faced same issue. I'm
running with "nvme_core.default_ps_max_latency_us=6000" since last 3
days without any problem now.
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@Kai-Heng Feng: I will test now with 6000, so far it looks good, but
hadn't much time to test during the holidays. I report back later this
day.
Additional Info for my XPS15 9550:
NVME Identify Controller:
vid : 0x144d
ssvid : 0x144d
sn : S29PNXAGB08057
mn : PM951 NVMe
@Nils,
With the current default value, your NVMe will transit to PS4. So let's add
kernel parameter 'nvme-core.nvme_core.default_ps_max_latency_us=2000' to test
if PS3 also shares the same issue.
If this issue persists, use 'nvme-core.nvme_core.default_ps_max_latency_us=0'
to turn APST off.
@Ben, I saw that you uses XPS 9550, the comment was clipped at the
bottom.
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https://bugs.launchpad.net/bugs/1678184
Title:
APST quirk needed for Samsung 512GB NVMe drive
I'm also experiencing issues since ugprading to 17.04. When I switch to
another TTY (via ctrl-alt-f1) the following errors get printed to the
screen:
[ 746.341551] EXT4-fs error (device nvme0n1p7): ext4_find_entry:1463: inode
#525023: comm NetworkManager: reading directory iblock 0
[ 746.343318]
No, it's a Lenovo ThinkPad X270. Do you need any other information?
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https://bugs.launchpad.net/bugs/1678184
Title:
APST quirk needed for Samsung 512GB NVMe drive
Status
@Nils,
Is your laptop XPS 9550/Precision 5510, too?
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Title:
APST quirk needed for Samsung 512GB NVMe drive
Status in linux
I'm having the exact same problem (drive dying with filesystem read
errors and system becoming unusable after using it for a while)
However, my nvme SSD is not from Samsung, but from Toshiba:
nvme list
Node SN Model
Namespace
Yes, can you try 6000 again? 3000 doesn't make it enters to PS3. My bad.
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Title:
APST quirk needed for Samsung 512GB NVMe drive
Hi, I have set "nvme_core.default_ps_max_latency_us=3000" now for over a
day now and its working, too. No issues until now.
@Kai-Heng Feng: do you need any other testing?
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Sure thing. I have been running with
"nvme_core.default_ps_max_latency_us=250" and repo kernel for about 24
hours now without issue. Confirmed with nvme that APST is enabled. I
will switch to "nvme_core.default_ps_max_latency_us=3000" later today or
tomorrow.
$ sudo nvme get-feature -f 0x0c -H
BTW you should use the kernel from repo instead of kernel from comment
#4.
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Title:
APST quirk needed for Samsung 512GB NVMe drive
@Andy,
Are you willing to help me testing if ps2/ps3 works?
My guess is that ps2 (most powersaving operational state) works but not ps3/ps4.
So I need your help to try kernel parameter
"nvme_core.default_ps_max_latency_us=250", and
"nvme_core.default_ps_max_latency_us=3000".
Thanks!
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That quirk looks good! Running stable and also verified that `nvme get-
feature -f 0x0c -H /dev/nvme0` reports Disabled.
Thanks for the quick responses!
Here's the id-ctrl output in case it is still helpful:
$ sudo nvme id-ctrl /dev/nvme0
NVME Identify Controller:
vid : 0x144d
ssvid :
Please test this kernel and let me know whether it fixes your problem.
Thanks!
http://people.canonical.com/~sforshee/lp1678184/linux-4.10.0-16.18+lp1678184v201704030935/
** Changed in: linux (Ubuntu)
Status: In Progress => Incomplete
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@Andy,
Can you install `nvme-cli` and attach the output of `nvme id-ctrl
/dev/nvme0`?
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https://bugs.launchpad.net/bugs/1678184
Title:
APST quirk needed for Samsung 512GB
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Seth Forshee (sforshee)
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