APM, ACPI and DPMS question
Hi,
I'm studying ACPI, and I found that:
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You should also be aware of another little glitch I discovered. The XFree86 server has an option for DPMS (Energy Star) features. The DPMS can states can be one of standby, suspend, off or on. Since the 2.4.x kernels cannot suspend to disk, this can cause problems.
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source: http://www.tldp.org/HOWTO/ACPI-HOWTO/daemons.html
I really doesn't understand this. I thought it's just about monitor energy, so please could somebody just roughly explain this ?
thanks, have a nice day
Jan Bernatik
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Quoted 10 lines · Jan Bernatik
Hi,
I'm studying ACPI, and I found that:
----------------------------------------------------------------------
You should also be aware of another little glitch I discovered. The XFree86 server has an option for DPMS (Energy Star) features. The DPMS can states can be one of standby, suspend, off or on. Since the 2.4.x kernels cannot suspend to disk, this can cause problems.
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I may be mistaken but.. I think I managed to get a 2.4 kernel on RH9 days to suspend to disk properly.
DPMS also works. Perhaps someone else can remember it much better.
Quoted 8 lines
source: http://www.tldp.org/HOWTO/ACPI-HOWTO/daemons.html
I really doesn't understand this. I thought it's just about monitor energy, so please could somebody just roughly explain this ?
thanks, have a nice day
Jan Bernatik
Signature · 12 lines
Ow Mun Heng Fedora GNU/Linux Core 2 on D600 1.4Ghz CPU kernel 2.6.7-2.jul1-interactive Neuromancer 09:50:41 up 1 day, 34 min, 7 users, load average: 1.83, 1.21, 1.19 ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php
Hi.
Quoted 5 lines · Jan Bernatik
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You should also be aware of another little glitch I discovered. The XFree86 server has an option for DPMS (Energy Star) features. The DPMS can states can be one of standby, suspend, off or on. Since the 2.4.x kernels cannot suspend to disk, this can cause problems.
Suspend2 is available for 2.4 kernels; it doesn't need ACPI or APM support. You're right in thinking that the issues of whether suspend-to-{ram,disk} is supported is completely independent of DPMS. It appears that the author of that page was confused.
Regards,
Nigel
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Nigel Cunningham Pastoral Worker Christian Reformed Church of Tuggeranong PO Box 1004, Tuggeranong, ACT 2901 Many today claim to be tolerant. True tolerance, however, can cope with others being intolerant. ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php
Quoted 9 lines · Jan Bernatik
Hi,
I'm studying ACPI, and I found that:
----------------------------------------------------------------------
You should also be aware of another little glitch I discovered. The XFree86 server has an option for DPMS (Energy Star) features. The DPMS can states can be one of standby, suspend, off or on. Since the 2.4.x kernels cannot suspend to disk, this can cause problems.
suspend to disk has nothing to do with DPMS at all.
Quoted 2 lines
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source: http://www.tldp.org/HOWTO/ACPI-HOWTO/daemons.html
well, this document is simply plain wrong in this regard.
Quoted 2 lines
I really doesn't understand this. I thought it's just about monitor energy, so please could somebody just roughly explain this ?
DPMS is monitor "standby", "suspend" and "off". It has nothing to do with system power management, ACPI, APM or suspend to disk / RAM.
Maybe you shold write the author of the ACPI-HOWTO and tell him.
Signature · 9 lines
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