Other stuff, and Power Management
wmb at firmworks.com
Sat Dec 9 15:18:13 EST 2006
The firmware does not support SD yet. It hasn't been a priority...
The power button should turn off the machine if you hold it in for 4
seconds, just like on a PC. More complicated instant power management,
like suspend, is not yet implemented. The power button does generate
keycodes, but the OS infrastructure to handle them is not yet ready for
The brightness level is changed by sending commands to the DCON chip via
SMBUS. The kernel does the talking to SMBUS; OF is not running once the
kernel takes control.
I don't know the answers to the rest of your questions.
Richard Hughes wrote:
> Thanks for sending me a test B machine - I've been playing with it lots
> the last couple of days.
> First, an easy question:
> * Do you want the test-A board back?
> Then a moderately easy question:
> * Why doesn't the cursor change to "busy" when it's working? I've nearly
> rebooted it a couple of times when it was actually "thinking"...
> Then the difficult ones:
> * Why can't I seem to boot an devel ext3 image from the SD slot? OF
> * Why does the power button (hardware) do nothing? Will it send out
> keycodes or some other events in the future?
> * How do you change the backlight brightness from a program(rather than
> the keyboard buttons)?
> * How is the brightness level being changed? Some embedded EC? OF? Do we
> get a userspace signal/event when the user changes it?
> * Is the battery class stuff ready to be integrated with HAL? i.e. will
> the file names change? I can code this next week if you like.
> * DPMS seems not to work. "sleep 1 && xset dpms force off" does nothing.
> * Where are per-session settings stored? GConf?
> This is all from an "as supplied" image. Cheers for any help,
> Richard Hughes.
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> Devel at laptop.org
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