No sound on headphone's jack? Normal sound output OK
I have installed Fedora 10-x86_64. I was happy and content with the distribution. Earlier, I found that there is no sound on my headphone's jack where as the normal sound output from my laptops's speakers is OK. I fiddled with the available mixers but couldnt get anything. There seem to be 5 different mixers (HDA, ALSA, OSS), 3 for the playback and 2 for the capture.
I am using an acer 4530 laptop. It has a nvidia Nforce MCP77 chipset.
and the o/p
lsmod| grep snd :
Any help on this?
I got the sound o/p on my headphones jack. This time, I included all the available options such as (surround, front speaker, PC speaker) in the alsa mixer. The surround one is muted by default, so I tried unmuting it and it worked!! :) strangely my headphones jack is being called as surround speaker jack by alsa mixer.
I guess alsa has detected my sound card as a 5.1 sound card and it mapped my headphones out jack to the surround speaker jack. To support this, even when I plug my headphones, the normal PC speaker which is mapped as 'front speaker' is still playing. I have to mute it manually to cut the audio from it.
I tried the command alsaunmute command and it says that it 'guessed the card "HDA Intel" "ALC888" .... '
From the above line its evident that it didnt determine my sound card exactly and that's why the mapping errors.
Is there a way in which we can specify the type or operational mode of my sound card to set it to work as a stereo one, not as 5.1??
thanx a lot buddy. i went through weeks of struggle to fix this issue on my acer 4530. million thanx to u for this simple tip.
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