[ACPI-sppt] Still having S5 problems on dell precision dual xeon system

Hi all,

some time ago (May) I posted the following:

"
I have been trying to get ACPI working on my dual xeon dell precision
530 MT but unfortunately with limited success.  I have tried various
combinations of kernel and patches, e.g. 2.4.21-rc1+acpi.  My current
focus is on getting power down to work; I have had _limited_ success
when hyperthreading is turned off in the bios.

Acpid succesfully handles the power button event, and I have it wired to
invoke 'shutdown -h now'.  This invocation works every time, even in
2.4.18.  But when 'Power down' is reached, the system _almost_ always
hangs with the message 

hwsleep-0257 [17] acpi_enter_sleep_state: Entering sleep state [S5]

As mentioned I tried disabling hyperthreading, and this seemed to work
for a while (with 2.4.21-rc1+acpi), but since a couple of (failed) S1
and S3 attempts, power-down has been hanging again (?!).

I would really like to get to the bottom of this; either with your help,
or on my own steam.  In the latter case, pointers to relevant/updated
documentation would be very much appreciated.
"

[ back to present day]  Nobody ever answered :-(  I recently decided to
pick this problem up again (my wife, who is now a day-to-day Linux user,
has started complaining about it ;-) ), and I tried 2.6.0-test4.  I
still have not had any success with S5.  Looks like I'll have to tackle
this one myself :-).   _Please_ can somebody point me in the right
direction on how to solve this?  

Thanks in advance,
	Jonathan Ross.



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