USB-HDD power management issue / instant spindown

[samu666]

Hello forum community!

My problem:
Using Longsleep headless Ubuntu image.
Connected Hard drive spins down instantly, when no job, and spin up time causes annoying pauses.
This makes even movie watching problematic, when the bitrate is low, i mean not mutch reading.

Tried to use hdparm, but no effect. Settings seems accepted, but no change.
Because headless, only ssh.

HELP, Anybody!
Thanks

[peterz]

Try powered USB HUB. This seems like issue with power.

[samu666]

Try powered USB  HUB. This seems like issue with power.

The drive have own power supply.
Also tried 2 different type of usb-sata converter.