Description of problem: Sound appears muted out of the box on Macbook Pro (5,5) systems. Once the channels are setup using alsamixer, it does work, including headphone out. This is an improvement from the past (from what I have read), but it would be nice if the channels were not muted by default.
Duplicate of #590907?
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Even after changing volume for Intel card with alsamixer, I still get no sound on MBP 6.2, Fedora 14
Created attachment 460115 [details] lspci
I just gave up in the end.
Needs to be changed in the alsa mixer init db.
Created attachment 461173 [details] alsainfo
*** Bug 590907 has been marked as a duplicate of this bug. ***
Update: it works on headphones, but not on laptop's speakers. More info: http://www.spinics.net/lists/alsa-devel/msg39238.html http://ubuntuforums.org/showthread.php?s=8767d5342bba908876b641e6da4a3505&t=1188849&page=10
Update: front speakers are muted again on each reboot.
In F15 sound is still muted by default. Microphone doesn't work too.
F15, headphones work but not the speakers and I cannot unmute (alsamixer says it is, but there's no sound). I'm passing "model=mbp55" or "model=3stack-6ch" to "snd-hda-intel", but it does not help. Any hints how to "unmute" the speakers?
590907 has all the relevant details to fix this problem, it seems a very trivial fix. It appears this bug should be reassigned to alsa-lib, that is maybe why no one picked up on this yet? It can be manually fixed using "alsamixer -c 0" and unmuting the front speaker.
Reassigned. Any fix for the microphone?
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I am running Fedora 18 on a 2012 iMac (iMac 12,1). Speakers attached to the sound output of this Mac do not work by default. There is a script listed in the following link from the Ubuntu forums that works fine; I just run it twice as root and my sound works again. https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/195412
the alsamixer fix above does not fix it.
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