[wellylug] strange power-related problem

[David Antliff]

On Wed, 26 May 2004, Enkidu wrote:
> In spite of the comments from the others, it might be worth throwing a
> different PSU in there. I presume it's ATX type?

An ATX system can 'power down' into one of several 'S' states. You can set
the ACPI powerdown state in the BIOS (usually). To allow Linux to make use
of this, you have to compile ACPI support into your kernel, if it's not
there already. One sign that ACPI is working properly is that your mobo
powers off the PSU after shutdown. If it sits there saying 'Power Off' or
somesuch, ACPI isn't doing it's thing. Perhaps this affects how the mobo
responds to 'power on' events - depending on the 'S' state, there will be
different ways of waking the system up (e.g. Wake-on-Lan, keyboard, mouse
click, long front panel button depress, etc).

Having never seen this problem specifically, I can only speculate and
hopefully point people in the right direction. Hope this helps.

And Linux 2.6 has much better ACPI support (although nowhere near
perfect).

-- 
David.