[ltp] hard disk spindown related lockups

[Justin Mason]

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FWIW, I had the same problem -- Debian unstable, ext3, then Ubuntu Hoary,
ext3.

The issue was laptop-mode, which I tried on Debian and now seems to be
default on Hoary.  "cat /proc/sys/vm/laptop_mode" will immediately tell
you if that's active (outputs a value != 0 if it is).

as far as I can see it's something to do with both laptop-mode and
madwifi.  Once the madwifi drivers are loaded, this will happen.  I've
managed to repro it on AC too, iirc.   Turning off laptop-mode (and
uninstalling the tool outright!) has fixed the problem for me.

- --j.

Uwe Walter writes:
> On Mo, 2005-02-28 at 09:12 -0500, sltp@rhythm.cx wrote:
> > Can those who replied to this thread having the same problems (Shannon
> > McMackin, Uwe Walter so far) let me know what filesystems you guys are
> > using?
> 
> ext3.
> 
> > I'm wondering if that has anything to do with it.
> 
> "Feels" more like an OS bug, if you ask me. The HD simply does not wake
> up properly, when it should and this hangs the system.
> 
> However, if I remember correctly (i'm not sure), mine *did* wake up on
> these occasions (audible), but the system hung anyway, so it did
> probably just not get noticed that the HD woke up, or timed out waiting
> for it, or whatever...
> 
> Greetings, UW(e)
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