Does this extent to other makers
I believe it's primarily a problem with "some" AMD chipsets (it has to do
with the Southbridge) and Samsung EVO paired together.
I'm sharing here two threads where I got help to troubleshoot problems
with the Samsung and the AMD chipset. Some commenters make suggestions
about what controllers are more trusted, etc.:
https://forums.opensuse.org/showthread.php/556066-Hibernate-with-Samsung-870-EVO-SSD
https://forums.suse.com/discussion/15435/hibernate-with-samsung-870-evo-ssd
If anyone runs into this problem, it is easy to disable NCQ, just add the
following to the kernel parameters:
libata.force=noncq
it may slow down random IO a bit, but given that the Samsung 870 EVO is
already so fast, it doesn't really bother me (still a lot faster than the
previous machanical hard disk).
Also, some Samsung EVO SSDs like 840/850 have in general some problems
with DMA (Direct Memory Access) in Linux (unrelated to the chipset):
https://github.com/torvalds/linux/blob/dbe69e43372212527abf48609aba7fc39a6daa27/drivers/ata/libata-core.c#L3774
I may try a Western Digital SSD in the future. WD bought SanDisk, there
are some issues with bad sectors reported by users in Newegg reviews of WD
SSDs, but not sure how it compares to other brands. Any experience with
Seagate besides / in addition to what Kate ("Borg Labs") wrote?
Gianluca
On Thu, 5 Aug 2021, dep wrote:
said Gianluca Interlandi:
| I installed a Samsung 870 EVO 1TB in a laptop with a AMD chipset. I
| learned that Samsung EVO SSDs and AMD chipsets do not play well
| together. I had to disable NCQ in order to get rid of error messages
| that indicated the potential for data loss. Samsung (EVO) + Intel
| chipsets should be fine though. More reading here:
|
| https://bugzilla.kernel.org/show_bug.cgi?id=201693
Good to know, in that I'm running an AMD chipset on the machine in
question. Does this extent to other makers, or is it just a Samsung thing,
do you know? Wonder if the problem has gotten fixed in later kernels; the
report is from 2018.
Another question: I'm running ext4 exclusively here, but I wonder: is there
a particular advantage in one filesystem over another on an SSD?
--
dep
Pictures: http://www.ipernity.com/doc/depscribe/album
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Gianluca Interlandi, PhD gianluca@xxxxxxxxxxxxxxxx
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Department of Bioengineering
University of Washington, Seattle WA U.S.A.
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