[TriLUG] Linux on Dell Latitude D610

[crimsun at fungus.sh.nu]

On Mon, Sep 12, 2005 at 07:48:16AM -0400, Steve Hoffman wrote:
> Simple mixer control 'Headphone',0
>   Capabilities: pvolume pswitch pswitch-joined
>   Playback channels: Front Left - Front Right
>   Limits: Playback 0 - 31
>   Front Left: Playback 31 [100%] [on]
>   Front Right: Playback 31 [100%] [on]

Mute this ^ (press 'm' in alsamixer, or use Volume Control in GNOME).

> Simple mixer control 'IEC958',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [on]

Mute this ^.

> Simple mixer control 'External Amplifier',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [off]

This one ^ is tricky. Some AC'97 codecs have flipped the register
setting. Prior to ALSA 1.0.8, 'External Amplifier' needed to be toggled
explicitly to [on] (unmuted), but we're seeing a fair number of reports
with SiS codecs that have this flipped register.

Here's what I'd do: If muting both 'Headphone' and 'IEC958' do not give
you sound, please unmute 'External Amplifier' in addition.

Thanks,
-- 
Daniel T. Chen            crimsun at ubuntu.com
GPG key:   www.sh.nu/~crimsun/pubkey.gpg.asc
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