snd_hda: no sound at all.

[Alexander Motin]

hdac0: GPIO: 0x40000004 NumGPIO=4 NumGPO=0 NumGPI=0 GPIWake=0 GPIUnsol=1

This codec has 4 GPIO pins. In different systems they gave different
meaning. In laptops they are often control external amplifiers an
muters, so if not configured properly they may block the sound. You
should try to set all 16 combinations of them with hint.hdac.0.config
loader tunable.

hdac0: Pin nid=20 seq=0
hdac0: Pin nid=21 seq=15
hdac0: Pin nid=30 seq=0
hdac0: Pin nid=24 seq=0
hdac0: Pin nid=25 seq=1
hdac0: Tracing association 0 (1)
hdac0: Pin 20 traced to DAC 2
hdac0: Pin 21 traced to DAC 2 and hpredir 0
hdac0: Association 0 (1) trace succeeded
hdac0: Tracing association 1 (2)
hdac0: Pin 30 traced to DAC 6
hdac0: Association 1 (2) trace succeeded
hdac0: Tracing association 2 (3)
hdac0: Pin 24 traced to ADC 7
hdac0: Pin 25 traced to ADC 7
hdac0: Association 2 (3) trace succeeded
hdac0: Tracing input monitor
hdac0: Tracing nid 11 to out
hdac0: nid 11 is input monitor
hdac0: Tracing nid 36 to out
hdac0: Tracing beeper
hdac0: nid 29 traced to out
hdac0: as=0 sense nid=21 [UNSOL]
hdac0: Pin sense: nid=21 res=0x00000000

Looking on this

When i _*do plug*_ an earphone i received message in dmesg like this
hdac0: Unsol Tag: 0x00000000
hdac0: Pin sense: nid=21 res=0x80000000
When _*I do unplug*_
hdac0: Unsol Tag: 0x00000000
hdac0: Pin sense: nid=21 res=0x00000000

and this I would say that codec detected properly.

And for your information, I am using laptop, which is having 2 jacks,
speaker and mic at front, see here for the picture
<http://techtickerblog.com/2006/07/06/benq-joybook-t31/>

According to codec configuration you should have digital output
somewhere also. May be front connector is somehow dual-functional and so
it lights when you play via digital output device. May be switching is
also controller by GPIOs.

[Yasir Khalid]

hdac0: GPIO: 0x40000004 NumGPIO=4 NumGPO=0 NumGPI=0 GPIWake=0

GPIUnsol=1
This codec has 4 GPIO pins. In different systems they gave different
meaning. In laptops they are often control external amplifiers an
muters, so if not configured properly they may block the sound. You
should try to set all 16 combinations of them with hint.hdac.0.config
loader tunable.

hint.hdac.0.config="gpio0"
hint.hdac.0.config="gpio1"
hint.hdac.0.config="gpio2"
hint.hdac.0.config="gpio3"

hint.hdac.0.config="gpio0, gpio1"
hint.hdac.0.config="gpio0, gpio2"
hint.hdac.0.config="gpio0, gpio3"

hint.hdac.0.config="gpio1, gpio0"
hint.hdac.0.config="gpio1, gpio2"
hint.hdac.0.config="gpio1, gpio3"

hint.hdac.0.config="gpio2, gpio0"
hint.hdac.0.config="gpio2, gpio1"
hint.hdac.0.config="gpio2, gpio3"

hint.hdac.0.config="gpio3, gpio0"
hint.hdac.0.config="gpio3, gpio1"
hint.hdac.0.config="gpio3, gpio2"

I have tried all 16 combination ( 1 by 1), I check the sound with this
command *cat /dev/random > /dev/dsp*. with hw.snd.default_unit=1. And I do
try with/without the earphone.
all of them just them same, *cant* hear any sound.

According to codec configuration you should have digital output
somewhere also. May be front connector is somehow dual-functional and

so

it lights when you play via digital output device. May be switching

is

also controller by GPIOs.
Do you think my internal speaker in front side of my laptop could be my
digital output?

It's not usual, but it can be both. I don't hane different explanation
for that LED light.
--
Alexander Motin

Any other suggestions ?
Really thank you for the responds