[ALSA - driver 0002198]: No sound out of the built in speakers, but from headphones on a Apple MacBook Pro

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2198> 
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Reported By:                enlighter
Assigned To:                tiwai
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Project:                    ALSA - driver
Issue ID:                   2198
Category:                   PCI - hda-intel
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Distribution:               Gentoo Linux
Kernel Version:             2.6.16.16
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Date Submitted:             06-09-2006 12:09 CEST
Last Modified:              06-18-2006 09:29 CEST
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Summary:                    No sound out of the built in speakers, but from
headphones on a Apple MacBook Pro
Description: 
Hi,

this error occours on all macbook pros! (see www.mactel-linux.org). Sound
comes only out of the headphones or out of line-out, but the internal
speakers keep mute. I cannot unmute them using the mixer (alsamixer,
kmix). I also tried a rc version of linux-2.6.17 with the same result.

I also tried to load the snd-hda-intel module with "model=laptop" and
"model=laptop-eapd".
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----------------------------------------------------------------------
 enlighter - 06-18-06 09:27 
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I updated my kernel to 2.6.17 with the same result. everything is still
quiet.
btw: the macbook pro has the SigmaTel STAC9221 A1 Codec.

----------------------------------------------------------------------
 enlighter - 06-18-06 09:29 
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lspci -nv:
00:1b.0 0403: 8086:27d8 (rev 02)
        Subsystem: 8384:7680
        Flags: fast devsel, IRQ 10
        Memory at 90400000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
        Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0
Enable-
        Capabilities: [70] Express Unknown type IRQ 0
        Capabilities: [100] Virtual Channel
        Capabilities: [130] Unknown (5)

Issue History
Date Modified  Username       Field                    Change              
======================================================================
06-09-06 12:09 enlighter      New Issue                                    
06-09-06 12:09 enlighter      Distribution              => Gentoo Linux    
06-09-06 12:09 enlighter      Kernel Version            => 2.6.16.16       
06-14-06 09:47 enlighter      Issue Monitored: enlighter                    
06-18-06 09:27 enlighter      Note Added: 0010297                          
06-18-06 09:29 enlighter      Note Added: 0010298                          
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