On Thu, Aug 08, 2019 at 18:05:55 -0000, James Kingdon wrote:
> I'm not sure what kernel was there before. I was expecting to see traces
> in /boot but the only references are to 4.14.133.
(Weird. I'm not familiar with the kernels for odroid, but off hand I'd
be suprised if the Seagate-blacklisting behavior would have changed
between this kernel version and previous ones within the Ubuntu 18.04
release.... I wonder if the full explanation is even more complex, e.g.
that actually hdparm was failing in the previous kernel versions too,
but the power-saving settings on the drives in the enclosures was
retained from before... until you lost power and the drives did a fresh
restart -- or something.)
> Yes, the drives are Seagate 4TB ones, ID 0bc2:331a
[...]
> I came to this page in a typically long and circuitous fashion after I
> noticed that the external drivers weren't spinning down anymore and
> discovering that hdparm wasn't working. Basic file IO was still ok.
Okay, yes, definitely the NO_ATA_1X problem.
Ah, were you using the "hdparm -B" or "-S" options (or the corresponding
apm=/spindown_time= settings in the Ubuntu package's hdparm.conf file)
to set the spin-down behavior? That's another use case affected by the
kernel's current NO_ATA_1X situation....
Nathan
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https://bugs.launchpad.net/bugs/1810215
Title:
for Seagate USB drive enclosures, SAT (e.g. smartmontools, hdparm)
works on kernel 4.13 but not on 4.15
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