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SubjectRe: APM-related crashes (flaky IDE RESET)
I had a similar problem, and it seems to afflict certain drives.  I still
have a little of a problem but it seems to fix itself.

I'm running on a Toshiba laptop with a Toshiba MK2105MAV drive. My
toshiba is pretty old (p100) and may not have all the power saving
features. On the 2.2.x kernels, a suspend and powerup will cause the hd
subsystem to totally crash just like the olivetti. I have since upgraded
the HD to an IBM and the problem changed to what the toshiba drive did in
2.0.36: it's "busy" but in a few seconds an IDE reset would occur and
everything would be fine and happy again. Weird. Seems in suspend, not
enough state is stored, or the kernel is assuming the hd to be ready
immediately after suspend... or the APM BIOS initialized the HD's
electronics weirdly...

-bc

On Tue, 18 May 1999, David Monniaux wrote:

> On Sat, 15 May 1999, Pavel Machek wrote:
>
> > > My Olivetti laptop has undergone two scary crashes lately. The sequence
> > > seems to be:
> > > 1. APM standby (suspend to disk works)
> > > 2. After coming back, the keyboard doesn't work anymore (though the mouse
> > > still moves, which indicates X and gpm are still alive)
>
> This time, I saw what happened. The hard disk gets stopped throughout
> standby. At the next hard disk access, the kernel sees the hard disk
> (hda) is "busy", resets ide0 (success), sees hda as busy, resets ide0 and
> so on...
>
> Looks like a bug in the IDE layer, or maybe some buggy hard drive.
>
> -- David
>
>
> -
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