Comment 17 for bug 337947

I have a very recent MacBook Pro 13". The command 'sudo dmidecode -s system-product-name' gives me 'MacBookPro5,5'. I've attached the output of 'lspci'. Neither speakers nor headphone output worked for me with the default Jaunty install.

After adding (actually, creating this file from scratch -- it didn't exist yet) the line "options snd_hda_intel model=mbp3" to /etc/modprobe.d/options and rebooting, I still have no sound in either speakers or headphones.

When I open "Volume Control" by right-clicking the gnome volume slider, I have the soundcard options:

 * HDA Nvidia (Alsa Mixer)
 * Generic 1013 ID 4206 (OSS Mixer)
 * Playback: HDA Nvidia - HDA Generic (PulseAudo Mixer)
 * Capture: Monitor of HDA Nvidia - HDA Generic (PulseAudio Mixer)
 * Capture: HDA Nvidia - HDA Generic (PulseAudio Mixer)

I've tried playing with the first three soundcard options with no luck. When I click on the "Preferences" button for option "HDA Nvidia (Alsa Mixer)" I see a "Volume Control Preferences" box with a "Select tracks to be visible" prompt with the following options:

 [x] | Master | Playback
 [x] | PCM | Playback
 [ ] | Capture | Recording

None of the preferences for any of the soundcard options I see say anything about 2 channels vs. 6 channels. Can anyone help me out?