Ok I found out it's because I use the cypress usb to ata chip in my harddisk enclosure. Would be great if it would be supported in later kernel builds as a module. (it's under usb storage). Can someone with a sata enclouse try to get it into sleep? Thnx
i can my sata disk gonne sleep:
hdparm -S 180 /dev/sdd works eventough it's a sata-disk
sdparm --long /dev/sdd
/dev/sdd: SAMSUNG HD103UJ
Direct access device specific parameters: WP=0 DPOFUA=0
and i can force 't to sleep:
a) sdparm --command=sync /dev/sdd
b) sdparm --command=stop /dev/sdd
and to awake:
c) sdparm --command=start /dev/sdd