Acer Aspire One D250 disk spin-down problem

[Matthias Apitz]

Hello,

I have a laptop Acer Aspire One D250 running 9-CURRENT and it seems that
after ~12 secs the disk is spinning down and is coming up again if an
action, like a command to start, requires this; I have checked with
atacontrol(8) but as far as I can see spin down is disabled:

# atacontrol list 
ATA channel 0:
    Master:      no device present
    Slave:       no device present
ATA channel 1:
    Master:      no device present
    Slave:       no device present
ATA channel 2:
    Master:  ad4 <WDC WD2500BEVT-22ZCT0/11.01A11> SATA revision 2.x
    Slave:       no device present
ATA channel 3:
    Master:      no device present
    Slave:       no device present

# atacontrol spindown ad4
ad4: idle spin down disabled

As well the BIOS has no visible option for this. I want to disable this,
what could I do?

Thanks

	matthias

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Matthias Apitz
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