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Bug#424868: marked as done (Noise from backlight electronics with new kernel 2.6.18 for PowerPC)

Your message dated Sat, 3 Jan 2009 22:09:33 +0100
with message-id <20090103210933.GA5098@galadriel.inutil.org>
and subject line Re: Noise from backlight electronics with new kernel 2.6.18 for PowerPC
has caused the Debian Bug report #424868,
regarding Noise from backlight electronics with new kernel 2.6.18 for PowerPC
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
424868: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=424868
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Source: linux
Version: 2.6

After Updating to etch and kernel 2.6.18 a whining very high frequency
noise is hearable. The same noise was also hearable with kernel-2.6.8
but only if backlight intensity was not at maximum level

As with the old kernel the noise frequency changes with backlight
intensity change, but is not disapearing with maximum intensity with
the new kernel. Upon boot the noise is not present until the line:

pmubl: Backlight initialized (pmubl)

appears. Therefore I think that the new kernel has limited the
backlight level to value slighly bellow the hardware limit.

The above stated console log line is issued by code in

drivers/macintosh/via-pmu-backlight.c

--- End Message ---
--- Begin Message --- 
On Sat, Jan 03, 2009 at 11:06:08AM +0100, Beat Zahnd wrote:
> On Dec 17, 2008, at 9:52 PM, Moritz Muehlenhoff wrote:
>
>> Does this error still occur with more recent kernel versions?
>>
>> If you're running Etch, could you try to reproduce this bug
>> with the 2.6.24 based kernel added in 4.0r4?
>> http://packages.qa.debian.org/l/linux-2.6.24.html
>>
>> Cheers,
>>         Moritz
>
> I have linux-image-2.6.18-6-powerpc 2.6.18.dfsg.1-23etch1 and now the  
> noise is gone...

Thanks, closing the bug then.

Cheers,
        Moritz

--- End Message ---
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