OHM power management: Difference between revisions
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(New page: {{OLPC}}{{Translations}}{{TOCright}} =OHM Policy= Original RFC to mailing list... o On momentary power button: turn off screen, suspend machine, leave keyboard and wireless on; keyboar...) |
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Original RFC to mailing list... |
Original RFC to mailing list... |
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* On momentary power button: turn off screen, suspend machine, leave keyboard and wireless on; keyboard/touchpad will cause instant on again. |
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o On momentary power button: |
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turn off screen, suspend |
* On lid close on battery, should turn off keyboard, turn off screen, Then should suspend to RAM, including disabling and powering down wireless |
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keyboard/touchpad will cause instant on again. |
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* On lid open, turn on keyboard, reset keyboard, resume from suspend, turn wireless back on, tell NM to reassociate (maybe only after some delay), try previous association first, of course... |
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* On ebook mode, should turn off keyboard |
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Then should suspend to RAM, including disabling and |
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powering down wireless |
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o On lid open, turn on keyboard, reset keyboard, resume from suspend, |
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turn wireless back on, tell NM to reassociate (maybe only after some |
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delay), try previous association first, of course... |
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o On ebook mode, should turn off keyboard |
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When we are suspended, and the battery wakes us up because it is "low", |
When we are suspended, and the battery wakes us up because it is "low", |
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then: |
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May do hibernation if enough flash is available. |
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Task: Tune the default DPMS parameters. |
Task: Tune the default DPMS parameters. |
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The big question is: how to do idle? |
The big question is: how to do idle? |
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X DPMS extension? X SS extension? cpuidle kernel patch, about to go |
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mainline in Linux, with module to tell ohm the system has been idle? |
X DPMS extension? X SS extension? cpuidle kernel patch, about to go mainline in Linux, with module to tell ohm the system has been idle? other ideas? |
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other ideas? |
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Revision as of 20:09, 28 August 2007
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OHM Policy
Original RFC to mailing list...
- On momentary power button: turn off screen, suspend machine, leave keyboard and wireless on; keyboard/touchpad will cause instant on again.
- On lid close on battery, should turn off keyboard, turn off screen, Then should suspend to RAM, including disabling and powering down wireless
- on lid close, on power, leave the machine on and running.
- On lid open, turn on keyboard, reset keyboard, resume from suspend, turn wireless back on, tell NM to reassociate (maybe only after some delay), try previous association first, of course...
- On ebook mode, should turn off keyboard
- On lid open, should reset keyboard
- on ebook to non-ebook mode, should reset keyboard
- on external power supply on *or* off, should reset touchpad
- rotate should probably be done by OHM.
When we are suspended, and the battery wakes us up because it is "low", then: For now, graceful shutdown after journal has been notified, May do hibernation someday if enough flash is available.
Task: Tune the default DPMS parameters.
Reset keyboard instructions are in trac.
The big question is: how to do idle?
X DPMS extension? X SS extension? cpuidle kernel patch, about to go mainline in Linux, with module to tell ohm the system has been idle? other ideas?