Hi,

I've been highly frustrated for more than a year about this problem with 
my HP nx7400 laptop and its Seagate Momentus 5400.2 disk (which is 
otherwise a really fine piece of equipment). By switching from Ubuntu to 
openSUSE today, I had to look for the Suse way of fixing this up 
(instead of editing /etc/hdparm.conf on Ubuntu), and I stumbled upon the 
storage-fixup script which is really nice!

As my harddisk isn't included in by default yet, I've attached the 
required information to this e-mail.

Adding this to /etc/storage-fixup.conf solves it:

    # Reported drive model: ST9100824AS
    rule hp-nx7400
    dmi system-manufacturer Hewlett-Packard
    dmi system-product-name HP Compaq nx7400*
    ata model ST9*AS
    act hdparm -B 255 $DEV

An unfortunate side-effect of meddling with the power saving on my 
system occurs at shutdown: for some reason I can clearly hear the drive 
spin down and then suddenly spin up and initialize again before the 
power is killed... This doesn't happen if I leave everything at default 
settings. Restoring the default setting (128) manually before shutting 
down doesn't prevent this either. It's weird and I've been working 
around it by rebooting and using the power button when I see GRUB appear.

I don't know if others have reported similar behavior.

Thanks for the effort,
Greetings,

Pascal Vandeputte