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SubjectRe: [PATCH] laptop-mode for 2.6, version 4 + smart_spindown
> I've got another problem getting this stuff to work. The problem lies 
> with my HD: it just doesn't respect the spindown time, I've got it set
> to hdparm -S 4 and it just doesn't spin down, even though there's no
> activity whatsoever! hdparm -B 254 gives me:
>
> /dev/hdb:
> setting Advanced Power Management level to 0xFE (254)
> HDIO_DRIVE_CMD failed: Input/output error
>
> It's funny, because hdparm -I gives me:
>
> Commands/features:
> Enabled Supported:
> [...]
> * Power Management feature set
>
> So, it should support this. Apparently it doesn't. :( The drive is a WD
> 800BB. Does anyone have any clue what could cause this?

No, but I've definitely seen other drives, (old Toshiba ~100 MB ones),
which respect 'spin down immediately' commands, and don't support the
spin down inactivity timer. I can't remember whether they report
Power Management feature set supported or not, though.

John.
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