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#46 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by MirceaForce 04.04.2017 01:46

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Zitat von denaba im Beitrag #45
Something else I just found out on driver 2.1. I was having a lot of popping in my speakers so started some troubleshooting. Long story short I got to check DPC latency and low and behold I had higher than 2000 readings. I used both DPC Latency Checker and Latency Mon. Disabled items and no change, but got to changing the drivers to the nvme and then I had way better latency readings. Used the Microsoft driver and also the 2.0 driver and now my latencies are hovering at 1000 and no pops. I installed 2.1 again and after rebooting my readings once again shot up over 2000 so 2.1 seems to be really buggy, I'd stay clear of 2.1
i think that windows drivers are the best for nvme

#47 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by MirceaForce 05.04.2017 02:25

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Zitat von denaba im Beitrag #45
Something else I just found out on driver 2.1. I was having a lot of popping in my speakers so started some troubleshooting. Long story short I got to check DPC latency and low and behold I had higher than 2000 readings. I used both DPC Latency Checker and Latency Mon. Disabled items and no change, but got to changing the drivers to the nvme and then I had way better latency readings. Used the Microsoft driver and also the 2.0 driver and now my latencies are hovering at 1000 and no pops. I installed 2.1 again and after rebooting my readings once again shot up over 2000 so 2.1 seems to be really buggy, I'd stay clear of 2.1
I did the same test with same results you are right.......driver 2.1 it's very buggy the best driver seems to be windows driver.......but with lower speed on as ssd

#48 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by MirceaForce 12.04.2017 13:32

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Zitat von denaba im Beitrag #45
Something else I just found out on driver 2.1. I was having a lot of popping in my speakers so started some troubleshooting. Long story short I got to check DPC latency and low and behold I had higher than 2000 readings. I used both DPC Latency Checker and Latency Mon. Disabled items and no change, but got to changing the drivers to the nvme and then I had way better latency readings. Used the Microsoft driver and also the 2.0 driver and now my latencies are hovering at 1000 and no pops. I installed 2.1 again and after rebooting my readings once again shot up over 2000 so 2.1 seems to be really buggy, I'd stay clear of 2.1
new driver is here 2.2
http://www.samsung.com/semiconductor/min...load/tools.html

#49 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by Fernando 12.04.2017 13:57

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@MirceaForce:
Please stop fully quoting other posts, and if you have done it nevertheless, don't repeat it. That is wasted space and negatively affects the readability of a thread. By the way - I have removed parts of your continuously quoted posts.

Zitat von MirceaForce im Beitrag #48
new driver is here 2.2
http://www.samsung.com/semiconductor/min...load/tools.html
The new Samsung NVMe drivers v2.2.0.1703 have been already offered within the start post of >this< thread at 06th April (look >here<).

#50 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by MirceaForce 12.04.2017 14:43

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hmmm...where should i know that ??? if not here on the last page

#51 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by Fernando 12.04.2017 15:13

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Zitat von MirceaForce im Beitrag #50
hmmm...where should i know that ??? if not here on the last page
This is not the thread, where the latest AHCI/RAID/NVMe drivers are offered. If you want to know, which one is the latest version of a certain storage driver, you should better look into the related thread before posting here, that a new driver is available somewhere else.

#52 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by beavis 20.04.2017 10:15

New firmware for 960 pro and nvme driver (2.2) didn't fix this. Actually it became even worse, nearly every second shutdown are unexcpected (windows events log only, ssd number not changed) and starts restore procedure on the next cold boot.

#53 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by 100PIER 20.04.2017 10:49

@beavis,
At the moment the only way to update 960 PRO firmware to new '2B6QCXP7' version is via Magician v5.0 software.
Unfortunatly Magician can't start on any of my W10 x64 v1703 PC's. (Magician internal error).
The Firmware iso file will be proposed very soon.
Do you have uninstalled Magician after your 960 PRO firmware update ?
On my side, I wait for iso file method availibility to update 960 PRO firmware.
On my side, (NVMe driver v2.2) with 960 EVO new firmware (2B7QCXE7) i no longer observe 'unsafe shutdowns' progression, nor W10 x64 'unexpected shutdown', nor 960 EVO disconnected (lost) after a PC Restart required under a WinPE v10.0.15063 application.
With 960 PRO old firmware I do observe all of these problems.

#54 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by beavis 20.04.2017 11:01

Zitat von 100PIER im Beitrag #53
Do you have uninstalled Magician after your 960 PRO firmware update ?
Nope, this tool constantly works all the time since i installed ssd. Do you believe it must help to resolve issues?

#55 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by 100PIER 20.04.2017 12:10

@beavis
Yes, I suggest you should test without Magician installed and active full time.
However, i am very surprise you succeed to "start" Magician !
What exact W10 version and build do you have ?
On my side I succeed to "install", but not to "start" Magician:

#56 RE: Samsung 950 PRO 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by beavis 20.04.2017 12:15

I always using the latest windows 10 enterprise x64 (creators update right now).

I will try to remove Magician later this evening when i will be at home.

#57 RE: SAMSUNG 950 PRO NVMe SSD 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by dash 21.04.2017 18:21

"Unsafe shutdown" counter increases means the SSD (NVMe or SATA) was *not* in STANDBY state when it was subject to a power cut. For SATA, that would mean an unplug, or host power off. For NVMe, it *might* also mean the device was set to state D3 (be it D3cold or D3hot), which powers it down while still attached to a powered up PCIe BUS.

Anyway, the possible reasons for this to happen are:

1. O.S. (or driver) did not send STANDBY IMMEDIATE (or the NVMe equivalent) before system power-off / PCIe D3;

2. O.S. (or driver) did not wait for enough time after STANDBY IMMEDIATE (or the NVMe equivalent) before power cut/switch to D3 -- for SATA SSDs, this one IS a MAJOR issue on both Linux and Windows 7/8/10, and yes, it could very well be the problem on NVMe as well. Since it is timing-related, it won't always happen due to combinations of O.S. + platform (BIOS has a say on how much time it takes for a power cut at shutdown...) + SSD + how much work the SSD still had to do;

3. O.S. (or driver) _sent a command to the SSD_ after STANDBY IMMEDIATE/NVMe "standby" equivalent, which forced it back to non-quiescence.

4. SSD firmware bug.

I bet on (2) or (3), since better NVMe drivers seem to fix the issue for most people (this is storage we are talking about, the best drivers are those that do not damage the storage device or increase the risk of data loss. Higher throughput is a fools' measurement of storage driver quality).

That said, ensure you are on the latest SSD firmware, and _always_ report any such bugs to the vendor (SSD vendor, driver vendor and O.S. vendor).

#58 RE: SAMSUNG 950 PRO NVMe SSD 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by beavis 21.04.2017 22:19

Removing Samsung Magician doesnt help, this issue reproduced again.

Also i noticed that chrome and torrent client also reported that was unexpectedly shutdown.

#59 RE: SAMSUNG 950 PRO NVMe SSD 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by beavis 22.04.2017 14:23

Looks like something wrong with "fast startup" at power options. Switching it off seems to resolve this issue. Will see how it going on.

#60 RE: SAMSUNG 950 PRO NVMe SSD 'unsafe shutdowns', NVMe driver, W10 x64 'unexpected shutdown' by 100PIER 22.04.2017 16:45

@beavis,
The "fast startup" BIOS option is set OFF, meanwhile I do observe the 'unsafe shutdowns' progression for 960 PRO (old firmware).

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