[linux-dvb] Re: VDR machine in standbymode (was: Minimum system)

[Ralf Bauer <RBauer@quark.de>]

to 1) We could start the EPG scanning immediately after a timer event is
finished and shutdown after all channels are scanned. This would allow you
to add "dummy" timer event which do no recording but just an EPG scan
whenever you think it is appropriate, for example 30 minutes before you come
home from work.

to 2) I didn't want to do a suspend to RAM, I want to do a real power-off.

to 3) Compared to the price for the electricity it would pay off to buy a
new HD every now and then ;-)

to 4) Wake-up on serial activity is already build in the BIOS and is no
problem.

Ralf.


-----Original Message-----
From: Johannes Schoeller [mailto:schoeller@gmx.at]
Sent: Thursday, February 22, 2001 17:37
To: Ralf Bauer; linux-dvb@linuxtv.org
Subject: [linux-dvb] VDR machine in standbymode (was: Minimum system)


nice thought! i.m also very interested in saving energy.

it would be a nice idea to put the pc in standby mode in
times of inactivity. and just wake it up just before the
beginning of a new recording, or in case a key of the remote
control is pressed.

problem(s):

.) automatic scanning of epg data after X hours. how long does
   it take? would it be enough to start it maybe 3 times a day?
   and then send the pc back to sleep?`
.) concerning the stability of the DVB driver: how stable is
   apm/pc98 working under linux. i use "suspend to RAM" on a
   win2k machine and i.m very impressed. it works great, and
   uses just about 3watts.
.) alternate starting and shutting down the harddisk is
   another problem. harddisk don.t love to be started and stopped
   too often. i even hate putting them in standby mode. but
   it saves another 5-10Watts.
.) i use the VDR machine as a firewall. so i would need the
   ability to wake the maching up on modem/isdn/adsl activity.

what so you think? is this manageable under linux?
i would appreciate it very much.


Johannes Schoeller
<schoeller@gmx.at>
<icq 2802639>



----- Original Message -----
From: "Ralf Bauer" <RBauer@quark.de>
To: <linux-dvb@linuxtv.org>
Sent: Thursday, February 22, 2001 3:32 PM
Subject: [linux-dvb] Re: Minimum system


> Well, what you described is definitely a very nice system that everybody
> would like to have, but there are also other aspects we should think
about.
>
> My VDR-PC consumes about 80W of electrical energy which sums up to 700
kWh/a
> or about DM 250,- a year and 413 kg CO2. An additional PC would even
double
> those numbers.
>
> We should also have a look at saving energy and reducing the annual cost
of
> such a system (you already guessed it, I'm Swabian).
>
> If you don't use your VDR-PC also as FAX server, answering machine or
> router, your machine will probably do nothing 90% of the time. It should
be
> pretty easy to automatically shutdown the system if it is not used to view
> or record something. This would lower the standby power consumption to
about
> 1-5 W which is about DM 15,- a year.
>
> It is a little bit more difficult to switch on the system for a timer
> recording. PC98 compliant mainboards (I am not sure about earlier models)
> support a wakeup on RTC, which means we could program the wakeup time of
the
> next timer event into the RTC and wakeup the VDR-PC just a minute before
the
> recording starts. I have not seen this support in Linux yet, but this
should
> be easily integrated in the "hwclock" command.
>
> Shutting down the system also reduces the noise to the time when the VDR
is
> used.
>
> Ralf.
>
>
> -----Original Message-----
> From: Emil Naepflein [mailto:Emil.Naepflein@philosys.de]
> Sent: Thursday, February 22, 2001 12:14
> To: linux-dvb@linuxtv.org
> Subject: [linux-dvb] Re: Minimum system
>
>
> On Sun, 16 Apr 2000 06:49:49 +0200, Clemens Kirchgatterer
> <clemens@root.at> wrote:
>
> > btw.: one day, a few weeks ago, i asked if somebody is intrested in such
> > a distri ... nobody wanted it! ;-)
>
>
> ---
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as subject.
>
>



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