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c.f. bug 424647
List Archive: gentoo-ppc-user
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To: gentoo-ppc-user@g.o
From: Eric Robertson <ericrobe@...>
Subject: Re: pbbuttonsd question
Date: Tue, 30 May 2006 14:53:19 -0400
Alden Huang wrote:
> Eric Robertson wrote:
>
>> I had a problem when I upgraded kernels as well.  When on the 2.6.15 
>> kernel I2C was a module.  I did not change this config when I first 
>> compiled the 2.6.16 kernel.  I re-compiled w/ I2C compiled intot he 
>> kernel & the lcd & sensor started to work but I still cannot get the 
>> keyboard light to work.
>>
>> Konstantin V. Gavrilenko wrote:
>>
>>> I have the same problem as you do, but in my case the ambient lights
>>> sensor doesn't work either.
>>> This happened after a switch from 2.6.15 to 2.6.16. I think the reasons
>>> might be in the I2C module that has been changed.
>>>
>>> In the 2.6.15 it was I2C_KEYWEST while in 2.6.16 it is named  
>>> I2C_POWERMAC.
>>> Wrote an email to the author of the pbbuttons but had no reply. It 
>>> would
>>> be great if we can sort out the problem in this list.
>>>
>>> p.s.
>>> machine         : PowerBook5,4
>>> motherboard     : PowerBook5,4 MacRISC3 Power Macintosh
>>> detected as     : 287 (PowerBook G4 15")
>>>
>>> pbbuttonsd, version 0.7.5
>>> Linux maca 2.6.16-gentoo-r7
>>>
>>> yours,
>>> kos
>>>
>>>
>>>   
>>
> Hi there,
>
> I'm not sure if this will be of help... I have an older model G4 ibook 
> (with a G3 proc) which does not have the lighted keyboard feature...
>
> check to make sure you have event interface enabled (the EVDEV module) 
> in your kernel. Also enable APM emulation or something like that under 
> the new Mac drivers menu.
>
> I've also noticed that the pbbuttonsd.conf default kbd light value is 
> 0, maybe that needs a different value? Have you tried changing the 
> light sensor threshold values as well? also running pbbcmds? any luck 
> with that?
>
> I dunno...hope this was somewhat helpful...
>
> best,
> alden
Thanks for the suggestion - EVDEV is enabled as part of the kernel.  
apm_emu is loading as a module.  My pbbuttonsd.conf has the kbd 
illumination value is set to 0 but it is also commented out.

Since I was looking at my kernel config I went ahead & made 2 changes & 
compiled a new kernel to test.

old kernel (per the .config file):
i2c support
    config_i2c=y
    config_i2c_chardev=y

i2c algorithms
    config_i2c_algobit=y
    config_i2c_algopcf is not set
    config_i2c_algopca is not set

i2c hardware bus support
    ...
    config_i2c_powermac=y
    ...

misc. i2c chip support
    ...
    (nothing is configured here)


new kewrel (per the new .config file):

i2c support
    config_i2c=y
    config_i2c_chardev=y

i2c algorithms
    config_i2c_algobit=y
    config_i2c_algopcf is not set
    config_i2c_algopca is not set

i2c hardware bus support
    ...
    config_i2c_powermac=y
    ...

miscellaneous i2c chip support
    ...
    config_i2c_debug_core=y
    config_i2c_debug_algo is not set
    config_i2c_debug_bus=y



The result, my syslog is filling up w/ hundreds of lines detailing the 
i2c devices loaded & the keyboard now lights up.  When I boot back to 
the "old" kernel (the one without the debug_core & debug_bus enabled) it 
stops working.  lcd brightness works on both of them works on both.  I 
ran a diff on the 2 .config files and verified that there were no 
changes other than what I just documented.

my confusion has just increased....

Eric
-- 
gentoo-ppc-user@g.o mailing list


Replies:
Re: pbbuttonsd question
-- Konstantin V. Gavrilenko
References:
pbbuttonsd question
-- Eric Robertson
Re: pbbuttonsd question
-- Konstantin V. Gavrilenko
Re: pbbuttonsd question
-- Eric Robertson
Re: pbbuttonsd question
-- Alden Huang
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Updated Jun 17, 2009

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