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[ibook G4] backlight on/off (solved)
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kemkem
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Joined: 26 Feb 2003
Posts: 69

PostPosted: Sat Nov 13, 2004 2:20 pm    Post subject: [ibook G4] backlight on/off (solved) Reply with quote

Hi,

I got a recent G4 ibook. (New Beige 1.33Ghz)
I'm desesperate cause I cannot configure my screen to goes off.
So when I closed the lid, the screen is still lightened !

It's not very nice when the computers compiles some sources for hours...

I use pbbuttons 0.6.1
The deamon works cause I can eject the cdrom with the special key.
But nor the screen...

My kernel is 2.6.8

--

edit (solved)

Ive just found the problem.
I passed some options to kernel :

append = "video=atyfb:vmode:24,cmode:32"

No it works
fblevel controls the brightness level,
and pbbuttons controls it when you press specific ibook keys.

Works great!


Last edited by kemkem on Sun Nov 14, 2004 4:43 pm; edited 1 time in total
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iTux
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Joined: 07 Sep 2004
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Location: Toronto

PostPosted: Sat Nov 13, 2004 10:29 pm    Post subject: Reply with quote

Hi,

I have iBook G3 700MHz
app-laptop/pbbuttonsd-0.6.5

Only diff in kernel relevant to power management is that I have:
CONFIG_ADB_CUDA=no
Though I don't think should matter much.

Can you change the luminosity of the screen with the daemon? Or no screen operations work?

iTux
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kemkem
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PostPosted: Sat Nov 13, 2004 11:19 pm    Post subject: Reply with quote

Havent test these features yet... Is it acting the same way ?
I mean are on/off managment and luminosity level managed by the same program (fblevel ?) ?

I noticed that fblevel is always to -1 and I can changed it...

Thanks for reply!
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woolsherpahat
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PostPosted: Sun Nov 14, 2004 7:52 am    Post subject: Reply with quote

Last I heard sleep is unsupported on G4 iBooks, sorry. However there was talk of drivers that the head PPC-kernel maintainer had got working. I can't rememeber when they were supposed to be merged with the kernel source.
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kemkem
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PostPosted: Sun Nov 14, 2004 11:43 am    Post subject: Reply with quote

I'm not talking about sleep function.

But only screen switching off when you close the lid.
I think that feature works on recent Ibook G4...
I know that sleeping is not supported yet on G4.

Any more ideas ?
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kemkem
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PostPosted: Sun Nov 14, 2004 3:38 pm    Post subject: Reply with quote

I think it's a kernel problem,
cause,
when I launch pbbuttonsd,
I see that It apparently receives lid open/close events.

But screen never goes on/off...
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toojays
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Joined: 21 Jul 2002
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Location: Adelaide, Australia

PostPosted: Sun Nov 14, 2004 11:50 pm    Post subject: Reply with quote

Just by the way, it sounds like you are wanting to let your iBook run in what is called "clamshell" mode, i.e. with the lid closed, but the machine still awake.

The iBook was not designed to be used with the lid closed, (apparently the PowerBooks were), and it is assumed that some heat can be dissipated through the keyboard. So be careful about heat issues when you are compiling stuff in this way. I've heard of this causing the keyboard to get a bit melted (maybe that's an urban myth?).

My pbbuttonsd is configured so that pressing the power button turns off the backlight, that way I can easily turn off the screen, but keep the lid open.
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kemkem
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PostPosted: Tue Nov 16, 2004 8:36 am    Post subject: Reply with quote

yep, my pbbuttons is configured the same way.

But I really dont know if the computer blow heat through keyboard..
But the surface near mousepad is really hot sometimes, so...
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toojays
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PostPosted: Wed Nov 17, 2004 10:32 am    Post subject: Reply with quote

Yeah, the left hand side next to the trackpad gets fairly warm, I think that is the hard drive.
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fourhead
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Joined: 03 Sep 2003
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PostPosted: Mon Jan 31, 2005 9:13 pm    Post subject: Reply with quote

Kemkem, how did you do that? I also have a recent iBook, and I managed to get pbbuttonsd turn off the backlight when I close the lid. When I open it, the backlight turns on again, but when I keep the lid closed for a while, the computer turns off completely!
Also, when pbbuttonsd is running, I can't use any of the special buttons to adjust brightness, loudness, eject CD and so on. When pbbutoonsd is NOT running, I can adjust the brightness. ???
Also, I've configured pbbuttonsd to dim the backlight after some time of inactivity, but it reacts only when the mouse stopped moving, but when not moving the mouse, but still using the keyboard, the backlight is still dimmed. Any ideas how to solve that? Anything that I have to do in the kernel?

Tom
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