Syslinux - Oct 2003 - PXELINUX and PowerSave Mode ...

We have a lot of diskless Linux clients which are booting via PXELINUX
or ETHERBOOT. The problem is that they are on for 24 hours and APM
PowerSave mode works for ETHERBOOT only. But in the future we want to
use PXELINUX only, which seems to have no features for APM or ACPI
PowerSave included. Would it be possible to integrate such features in
PXELINUX or is there a way to boot a special image (which is not the
default one) after a certain timeout ? So the user could start the
default image by pressing return only, but after a certain timeout
a special image would be started, which sends the client in PowerSave
mode. This would be very important for us due to lifetime of monitor
and pc.

MGR
-- 
MARTIN G. RATHMAYER                    mailto:rathmayer at zid.tuwien.ac.at
IT Services (ZID)                      http://www.zid.tuwien.ac.at
Vienna University of Technology        Phone: +43-1 58801-42086
Wiedner Hauptstr. 8-10, A-1040 Vienna  Fax:   +43-1 58801-42099

Hi,

"Martin G. Rathmayer" <rathmayer at zid.tuwien.ac.at> schrieb am
28.10.03 13:56:04:
> 
> We have a lot of diskless Linux clients which are booting via PXELINUX
> or ETHERBOOT. The problem is that they are on for 24 hours and APM
> PowerSave mode works for ETHERBOOT only. But in the future we want to
> use PXELINUX only, which seems to have no features for APM or ACPI
> PowerSave included. 
pxelinux is a bootloader, not an operating system. I wouldn't like pxelinux
to
do anything regarding APM/ACPI, since this could create various problems
with the operating system loaded afterwards.
> Would it be possible to integrate such features in
> PXELINUX or is there a way to boot a special image (which is not the
> default one) after a certain timeout ? So the user could start the
> default image by pressing return only, but after a certain timeout
> a special image would be started, which sends the client in PowerSave
> mode. This would be very important for us due to lifetime of monitor
> and pc.
Take the second approach, use 'default powersave' and 'timeout
6000' (for 10 minutes
timeout), and 'label l' for your operating system. This would mean your
users
should type 'l <enter>' for starting the system, otherwise your
'label powersave' would
be loaded. Maybe you could also present some meaningful message to the user for 
doing this.

Regards,

Josef

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