nanogui: Thread: iPaq demo sources?

Hello!
First of all let me start by telling how amazed I am by the just released
microwindows (nano-x) demo for the iPaq! It runs much better than anything I
had already running (which will be because the demo uses the latest nano-x
version which was not yet available?). I still think that nano-x is the way to
go for any current Linux PDA though there is still much work to do (double
buffering would be SO nice ;) I hope that I can contribute to it some day (a
flnx mp3 player is already in the works ;)
Though I wonder where I can find some of the sources that are used in the demo
especially the nxscrtop. I would very like to change some things in it (remove
the seconds from the clock, switch off display completely when tapping on the
backlight button, add automatic display blanker (yeah, that was me some weeks
ago)). I just browsed the sources of microwindows pre5 and could not find any
hint for it.
Anyway, great work!
CU
  nils faerber

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kernel concepts
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Nils -

I was under the impression that the power management in kernel test17
was virtually nonexistent (except of course, for battery life
monitoring).  I am unaware of any code that will actually turn off the
screen.  So unless I am way off base, a screen blanker wouldn't be very
useful at this point, since the power would still be running the screen,
even if the screen is blank.  Do you know of any code that will turn off
the power to the screen?  If so, I would love to see it, because that
would make life really cool.  Until then, I think that your best bet
would be to just turn off the backlight, so you could save as much power
as possible, but still see something on the screen.  

Let me know if I am barking up the wrong tree.

Happy hacking!
Jordan

Nils Faerber wrote:
> 
> Hello!
> First of all let me start by telling how amazed I am by the just released
> microwindows (nano-x) demo for the iPaq! It runs much better than anything I
> had already running (which will be because the demo uses the latest nano-x
> version which was not yet available?). I still think that nano-x is the way to
> go for any current Linux PDA though there is still much work to do (double
> buffering would be SO nice ;) I hope that I can contribute to it some day (a
> flnx mp3 player is already in the works ;)
> Though I wonder where I can find some of the sources that are used in the demo
> especially the nxscrtop. I would very like to change some things in it (remove
> the seconds from the clock, switch off display completely when tapping on the
> backlight button, add automatic display blanker (yeah, that was me some weeks
> ago)). I just browsed the sources of microwindows pre5 and could not find any
> hint for it.
> Anyway, great work!
> CU
>   nils faerber
> 
> --
> kernel concepts
> Engel & Faerber GbR      Tel: +49-271-771091-12
> Dreisbachstr. 24         Fax: +49-271-771091-19
> D-57250 Netphen          D1 : +49-170-2729106
> --
> 
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On Fri, 03 Nov 2000, you wrote:
> Nils -
Hello Jordan (and others of course ;)

> I was under the impression that the power management in kernel test17
> was virtually nonexistent (except of course, for battery life
> monitoring).  I am unaware of any code that will actually turn off the
Non existent is a bit too much.
There is the CPU clock scaler and PM based on APM is in the works.

> screen.  So unless I am way off base, a screen blanker wouldn't be very
> useful at this point, since the power would still be running the screen,
> even if the screen is blank.  Do you know of any code that will turn off
> the power to the screen?  If so, I would love to see it, because that
You can turn the display off completely and thus save power:
  ioctl(fd,FBIOBLANK,VESA_POWERDOWN)
does the trick.

> would make life really cool.  Until then, I think that your best bet
> would be to just turn off the backlight, so you could save as much power
> as possible, but still see something on the screen.  
This should just be phase 1. After more inactivity the display should shut off
completely and then after another timeout the whole thing should go to sleep.

> Let me know if I am barking up the wrong tree.
Hmm ... almost seems so ;)

> Happy hacking!
Also!
I have attached a complete blanker source. Now that you have my source would you
share nxscrtop's source with me?

> Jordan
CU
  nils faerber

-- 
kernel concepts
Engel & Faerber GbR      Tel: +49-271-771091-12
Dreisbachstr. 24         Fax: +49-271-771091-19
D-57250 Netphen          D1 : +49-170-2729106
--