Re: SSD overheating during scrub in laptop (SOLVED: no overheating but firmware issue)

[Martin Steigerwald <martin@lichtvoll.de>]

Greetings Qu, greetings.

Qu Wenruo - 16.09.25, 23:17:18 CET:
> >>> I have hit similar situation, but the symptom is very different, the
> >>> death come silently at boot, the drive is no longer recognized by
> >>> the
> >>> BIOS thus no longer bootable, and Linux kernel from liveUSB will not
> >>> recognize it either.
> > 
> > Hmm, did you capture any logs?
> 
> Nothing suspicious at all, except no PCIE device detected at all.
> 
> So in my case it's really toasted so that it can not even be detected
> anymore.

I think I finally got this sorted.

You have been right, Qu: It was no overheating issue.

Just completed a scrub of 2 TiB data. Twice in a row, first on TTY without 
loaded desktop with about 3 GiB/s, then on desktop with power-profiles-
daemon set to performance mode with about 3,8 GiB/s.

Sensor 2 of SSD temp went up to 101 degree Celsius and it was no issue.

What did I change? I upgraded firmware from 4B2QJXD7 to 8B2QJXD7 after in 
a dialog with AI I was hinted about issues that users lost their device at 
least temporarily after unsafe shutdown. Or even needed to send them in 
for repair. Luckily I never had one of these.

However they also wrote something interesting about read-operation 
stability:

-----------------------------------------------------------------------

* (8B2QJXD7) To improve read-operation stability. (Release : December 
2025)

* (7B2QJXD7) To address the intermittent non-recognition and blue screen 
issue. (Release: September 2025)

* (4B2QJXD7) To address reports of high temperatures logged on Samsung 
Magician. (Release: December 2024)

*990 PRO I 990 PRO with Heatsink will be manufactured using a mixed 
production between the V7 and V8 process starting September 2023.

-----------------------------------------------------------------------

https://semiconductor.samsung.com/consumer-storage/support/tools/

What can I say?

With 4B2QJXD7 a scrub of more than 1 TiB data was always interrupted with 
SSD being gone until forced restart of the machine, unless I paused and 
resumed it myself quite an amount of times.

With 8B2QJXD7 two scrubs of 2 TiB in a row completed without any issue.

Happy to have this sorted. Thanks for firmware update to Samsung!

So make a backup and update your firmware!


What a mess, really: Just took some years until I finally seem to have a 
fully working product. And it has not been the first firmware issue I have 
seen. Not even the first issue regarding this SSD model. Also I still 
remember "no operating system found" with Intel SSD 320 after unsafe 
shutdown with a firmware that should even fix this issue and despite this 
SSD even having some sort of Power Loss Protection (PLP) unlike the 
Samsung 990 Pro.

Another note to Samsung: Pretty please update the way you create your 
firmware ISOs. Kernel 4.5.3 and it does not even boot on my laptop? You 
gotta be kidding me. Sure I can extract the update tool from initrd and 
run it manually, but really? How about just going with Linux Vendor 
Firmware Service via fwupd? Then I would have seen this update much 
earlier.

Best,
-- 
Martin