Hey David, did you ever get this figured out?
Did you ever inspect the device parameters via sdparm or hdparm?
I have *heard* of some Seagate devices disappearing when they go into
suspend, but your problem doesn't sound like this issue since it happens
in the middle of writing. Still, I thought I'd mention it.
My experience with hdparm on USB devices isn't good, but it works for
some people. hdparm -I that thing.
For sdparm, do this:
sudo sdparm --flexible -6 -l -a /dev/sdb
You might be able/need to remove "--flexible" and "-6". Those are
compatibility options that some of my devices need.
Good luck to you!
On 7/22/15 16:20, David Fuchs wrote:
On Wed, Jul 22, 2015 at 3:17 PM, Håkon Alstadheim
<ha...@alstadheim.priv.no <mailto:ha...@alstadheim.priv.no>> wrote:
How long are your USB-cables? What kind of power supply do you
have, and what else is drawing power?
The USB cable the drive is currently on is fairly short - about 80cm
if I had to guess. The drive has its own wall-wart specced at 2A
(12V). There's nothing plugged into the USB ports that would draw
power (the only other device plugged in is a UPS).
I just went from a PSU specced at 5x the needed sustained power to
10x . Got a slight but definite improvement in USB stability. Yes,
my system is drawing ~ 150w from a 1200w supply. Externally
powered hubs were no help. 5v is specced at 30amps max. I still
get drop-outs , very rarely reqiuring hard boot now, except if I
try the multi-media-keys on my back-lit usb2.0 keyboard.
The host is powered by a 300W Fortron SFX PSU, which should be about
5-6x of actual power draw. It's plugged into the UPS so power should
be fairly stable... but you do bring up a good point, the PSU is one
element I hadn't considered. Might try to swap that out, too, when I
get a chance.
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