[alsa-devel] model needed for Clevo P150HM (Realtek ALC892)

Julian Sikorski belegdol at gmail.com
Mon Jul 18 13:42:50 CEST 2011

W dniu 18.07.2011 13:19, Takashi Iwai pisze:
> At Mon, 18 Jul 2011 13:15:14 +0200,
> Julian Sikorski wrote:
>> W dniu 18.07.2011 10:52, Takashi Iwai pisze:
>>> And I can't reproduce your problem with the alsa-info.sh output above.
>>> Give more exact information what you did and what is the problem.
>>> thanks,
>>> Takashi
>> I'm sorry for the confusion - let me sum up the current situation. With
>> the fixes you pushed to sound-2.6/master I was able to get 5.1 sound out
>> of my laptop. The only missing bit was the 7.1 sound. And the last
>> channel goes via a jack/optical spdif hybrid. The problem is that the
>> BIOS does not announce that and as such alsa is unaware of the side
>> surround channel.
>> Using Raymond's advice, I was able to make the sound come out of the
>> last jack, by changing some values for pin 0x17 (described as sidesurr
>> in the datasheet), diff is attached. I basically checked what was the
>> difference in alsa-info.sh output when I was changing number of channels
>> with alsamixer, and then did the same for pin 0x17.
>> Since, from what I understood, you wanted me to figure out which pin is
>> connected to the last jack [1], I thought this information would be
>> useful to fix BIOS shortcomings.
> Yes, and note that you can set up the initial pin configurations
> dynamically via sysfs, too.

I tried, but without much success [2] - I came up with 0x01111xxx, but I 
do not have enough understanding on what to put as the last 3 numbers. 
Moreover, I keep getting this upon trying to apply the new pin 
# echo 0x17 0x011111f0 > user_pin_configs
# LANG=C pasuspender echo 1 > reconfig
echo: write error: Device or resource busy

>> Other problem is that the volume on that jack is controlled by center
>> and lfe sliders (in alsamixer), which is probably caused by the fact
>> that alsa is unaware of the 7.1 sound.
> And this is not what I can't reproduce.
>> If more information is needed, please let me know what do you need in
>> addition to alsa-info.sh output.
> First off, double-check whether the CLFE mixer really changes the pin
> amp.  At best, take alsa-info.sh output snapshot before and after
> changing the mixer state, and compare the files (better give both
> files in the mail).

Here you go. playing.txt is the state when sound comes out of the 
spdif/side pin, and the center-lfe-half-volume.txt is when the volume is 
reduced to 50 % afterwards.
Please keep in mind that if you enable 6-channel sound with alsamixer, 
the volume on center/lfe-mic jack will be reduced too 

> Takashi


[2] http://article.gmane.org/gmane.linux.alsa.devel/86878
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