Sound on unibody MacBook Pro (MacBookPro5,1) in Intrepid Ibex (Ubuntu 8.10)

[calebio]

Following up to this thread: no sound macbook 3,1 with hardy 8.04.

Sound from the speakers does not work out of the box on the new MacBook Pro (late 2008, MacBookPro5,1). This seems odd to me, since audio works from the headphone jack, but not the speakers. That should be a clue, but I'm not sure of what-- sound drivers work, but routing is incorrect, or something of the sort. How can I start to debug this?

[calebio]

Following up to this thread: no sound macbook 3,1 with hardy 8.04.

Sound from the speakers does not work out of the box on the new MacBook Pro (late 2008, MacBookPro5,1)....

The solution is given here.

[guggi]

hey ur welcome

cheers guggi

[Nikos.Alexandris]

hey ur welcome

cheers guggi

Hi! Could you post any details? I 've followed tha latest alsa-script thread but it doesn't work for me (built-in speakers). Thanks, Nikos

[calebio]

Hi! Could you post any details? I 've followed tha latest alsa-script thread...

Have you done everything here?

1. run the script
2. reboot
3. start alsamixer in terminal, set up Master, PCM, Line-Out and switch from 2ch to 6ch
4. call "sudo alsactl store" in terminal

[Nikos.Alexandris]

Have you done everything here?

1. run the script
2. reboot
3. start alsamixer in terminal, set up Master, PCM, Line-Out and switch from 2ch to 6ch
4. call "sudo alsactl store" in terminal

Yep! All four of the steps. I just have the impression that I hear just something eXtremely short and low... just some tiny little short noise That's all... it doesn't work

Could it be affected from anything else besides alsamixer? Do the settings in OSX have anything to do with it (probably not but I try to check all possibilities)?

Thank you for your time. Regards, Nikos

[Nikos.Alexandris]

Folks,

I have something really strange (for me at least):
I have sound only on the right speaker and *only* when I set to 6ch!!

EDIT: Sorry, I misunderstood the instructions: I thought it should work when on 2ch and not on 6ch. Anyway, I get no stereo sound only mono(right)!

Who is ready to solve this puzzle??

[Nikos.Alexandris]

Folks,

I have something really strange (for me at least):
I have sound only on the right speaker and *only* when I set to 6ch!!

Who is ready to solve this puzzle??

I have even lost the three "Input Sources" fields under the Options tab !!

[Nikos.Alexandris]

Could somebody (using MBP5,1) post the output of the following command:

amixer

Mine is (note the Mono on the third line):

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [12.00dB] [on]
  Front Right: Playback 31 [100%] [12.00dB] [on]
Simple mixer control 'Line Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 3 [100%]
  Front Right: 3 [100%]
Simple mixer control 'Line-Out',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB]
  Front Right: Playback 64 [100%] [0.00dB]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [12.00dB] [on]
  Front Right: Playback 31 [100%] [12.00dB] [on]
Simple mixer control 'Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 3 [100%]
  Front Right: 3 [100%]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined cswitch cswitch-joined
  Playback channels: Mono
  Capture channels: Mono
  Mono: Playback [on] Capture [off]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Channel Mode',0
  Capabilities: enum
  Items: '2ch' '6ch'
  Item0: '6ch'
Simple mixer control 'Digital',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 120 [100%] [30.00dB]
  Front Right: Capture 120 [100%] [30.00dB]
Simple mixer control 'Speaker',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]

EDIT: Another example is when i play a .wav file using aplay:

aplay -Dplughw:0,0 -fcd /usr/share/sounds/question.wav

Playing WAVE '/usr/share/sounds/question.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono

If this is what "mutes" the left speaker... any ideas how to change it?

[guggi]

dmidecode -s system-product-name
MacBook5,1

amixer
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 65536 [100%] [on]
  Front Right: Playback 65536 [100%] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 65536
  Front Left: Capture 65536 [100%] [on]
  Front Right: Capture 65536 [100%] [on]

aplay -Dplughw:0,0 -fcd /usr/share/sounds/question.wav
Wiedergabe Wave '/usr/share/sounds/question.wav' : Signed 16 bit Little Endian, Samplingrate: 44100 Hz, Mono
aplay -Dplughw:0,0 -fcd /usr/share/sounds/card_shuffle.wav 
Wiedergabe Wave '/usr/share/sounds/card_shuffle.wav' : Signed 16 bit Little Endian, Samplingrate: 44100 Hz, Stereo