[mythtv-users] powerdown a masterbackend box

[Steven Cruysberghs]

Op zo 15-02-2004, om 13:48 schreef Henk Poley:
> > Van: Johannes Niess <linux at johannes-niess.de>
> >
> > The tricky part is to have the box power up again for the next recording.
> > How to do that depends on your hardware, kernel, BIOS setiings, etc. I
> > recommend to test both routes from the command line:
> > A) "apmsleep +1m" or " <set rtc alarm>; apm -S"
> > B) echo "2004-02-15 12:17:00" >/proc/acpi/alarm; echo 4 >
> > /proc/acpi/sleep
> 
> I've used nvram_wakeup (to set the RTC alarm) on my Asus Pundit, and a full
> 'shutdown -h now'. Yes, it might boot slower than with hibernation, but
> takes even less juice.
Henk,

Could you post some details on the nvram-wakeup stuff on your pundit? I
played around with it (0.91) but all I got was :

nvram-wakeup: Your mainboard is currently not supported.
nvram-wakeup: Please try determining the addresses and sending the
following
nvram-wakeup: information back to the maintainers:
nvram-wakeup:  - The addresses you found out (read README.mb)
nvram-wakeup:  - Mainboard vendor:   ASUSTeK Computer INC.
nvram-wakeup:  - Mainboard type:     P4S8L
....
...


Thanks
Steven




> 
> So that's a 3rd option.
> 
> > Route A requires APM support in your kernel and luck that BIOS switches
> > off the fans.
> >
> > Route B uses ACPI and may need a 2.6 kernel. Even then it does not result
> > in a "resume from disk" for me, but in a not so clean reboot. With a 2.4
> > kernel you could also try to the other integers to /proc/acpi/sleep. But
> be
> > prepared for unclean shutdown.
> 
> Doesn't it require more than this normaly (aka, most X servers don't like
> hibernation since the video-card will be reset, so you need to stop and
> start it, etc.)?
> 
> > As I have no dedicated mythtv box I need more intelligence before
> > shuting down. Load < 0.1 and no logins need to be checked.
> 
> How did you add that, load checking? Some 'watchdog deamon' that kills the
> frontend and backend when both have been idle for X minutes? And and
> restarts it (how do you do that on a managed desktop?) when the machine
> wakes up again?
> 
> I'd like to have my frontend 'always on'. But that seems to be impossible
> with MythTV 0.14, since the frontend connection keeps the backend from
> shutting down, and the frontend doesn't disconnect after some timeout.
> 
> > P.S: When do the shutdown timers start? Before or after ad cleaning and 
> > transcoding?
> 
> Does commercial skip even work in Germany? (you are german, aren't you?
> noticing the .de adress)
> 
> 	Henk Poley <><
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