I have the same thing on both of my Acer Aspires one D250 using alc272 codec I was able to work around it either with a special asoundrc coding or by seperating the L & R channels with pulseaudio and making one or the other less in signal strength. Originally I was unable to get sound from the microphone but a fix was made and put into the alsa drivers but this particular issue remains. I am currently using Mandriva 2010 and this issue is present and I have tested Ubuntu 10.4.1 in a live session with pavucontrol am able to duplicate this same issue and same workaround.
On Mon, Aug 23, 2010 at 1:45 PM, Seano <[email protected]> wrote: > Apologies for double posting but I found a few minutes to do some more > testing. I have an Acer Aspire One 532h which has exactly the same > symptoms i.e internal mic doesn't work until there is a level difference > between right and left. > > Not only is there a polarity reversal but working around this by > reducing one input fader to zero is creating excessive noise because the > phase cancellation is happening somewhere in digital and reducing the > fader is not the same as muting the channel. I can further confirm this > because an external signal (1KHz tone in this case) connected to only > left or right with both faders the same, works fine and is clean > compared to the fader down solution but the same source is suffering > from cancellation when applied to both channels ( great for vocal > removal :-) ) > > The scary thing is that installing pavucontrol and pulling the fader > down has been offered all over the internet as a solution when in fact > it's a poor workaround for one situation only. > > Symptoms are the same with version 1.0.23 of alsa installed. > > Sean > > -- > AOD250 microphone problem > https://bugs.launchpad.net/bugs/412862 > You received this bug notification because you are a direct subscriber > of a duplicate bug (378806). > -- Reach out and share your life, care for others, -- AOD250 microphone problem https://bugs.launchpad.net/bugs/412862 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
