Description of problem: I can not get any input sound from microphone. Version-Release number of selected component (if applicable): kernel 2.6.31.6-137.fc12.x86_64
Created attachment 374987 [details] alsa info file
I cannot record from my internal microphone either on an Acer Timeline 3810T... I'm also attaching my alsa info file. In my case when I play with the settings in alsamixer the best I can get is to record a lot of static...
Created attachment 376205 [details] Alsa info fille
Same here, mic does not work, Acer Timeline 1810tz.
Created attachment 407450 [details] alsa-info file
The alsa driver decodes the mic inputs wrong. You can't fix it using the PulseAudio controls, or kmix, or any mixer other than alsamixer.. BUT, once it's fixed, it works fine! I finally got the microphone to work with skype.. this assumes you have either the correct alsa driver (1.0.20 kernel drivers minimum), or Fedora 12 with the lastest kernel. It's done using alsamixer. Open a terminal window, and start 'alsamixer -c0 -Vcapture' You'll see 2 sets of bars.. The left channel in 'Front Mic Boost' and 'Capture' is the Internal mic, on the bezel, next to the video camera; the right channel is the microphone plug. Select 'Front Mic Boost', and hit the 'q' key 3 times. Hit right arrow, and then hit 'q' 9 times. the column labeled 'Input Source' should be 'Front Mic'. Hit the 'ESC' key to exit, and the internal mic should work now. So, the question now becomes - how do we get alsa to properly route the mics?
Oh, the Acer 1810 series and the 1410 11.6" display series differences are simply CPU, possiblity of a USB bluetooth device, and possibly the wireless device. Everything else is the same..
I have found a work-a-round for this: 1. Launch pavucontrol (may have to install this) 2. Click on the "Input Devices" tab 3. Turn down the Front Left channel to 0 (make sure they are Left/Right are not locked) Leave the Right channel at something reasonable, say 80%. 4. Mic should now work It appears the new Google Voice plugin is resetting this configuration, I have not found a way to keep it locked at the above.
This is still present in F14 Alpha. This might need to hit the alsa maintainers, not the Kernel, redirecting. alsa-lib-1.0.23-1.fc14.i686 alsa-lib-devel-1.0.23-1.fc14.x86_64 alsa-utils-1.0.23-3.fc14.x86_64 alsa-firmware-1.0.23-1.fc14.noarch alsa-plugins-pulseaudio-1.0.22-1.fc13.x86_64 alsa-tools-firmware-1.0.23-1.fc14.x86_64 alsa-lib-1.0.23-1.fc14.x86_64
Acer 4810tg is also affected, most probably all other Timeline models, like 5810t/g/z, etc. Solution from comment 8 works fine!
Acer Aspire One D255 also has this issue. Comment 8 fixes this but would be good to see it fixed properly! as if you touch the mic in the normal audio tool it will bind both L and R back together which will stop the mic working.
Sorry i am running Fedora 14 btw.
A note: the microphone device is treated as stereo, but it is definitely mono, and this might lead to the problem.
I can confirm this is still an issue on the Acer D255 in Fedora 14 x86_64 updated as of today (2011-02-04). Comment #8 work around works as well.
This is still an issue in Fedora 15 alpha
Same issue here internal nor external mic aren't working with Asus Aspire 1410 in Fedora 14 i386
Same issue in Fedora 15
have tried everything in: http://fedoraproject.org/wiki/How_to_debug_PulseAudio_problems without success.
Created attachment 502098 [details] pulseaudio -vvvv
Created attachment 502099 [details] pacmd ls
Created attachment 502100 [details] alsa-info
Here is a workaround: http://mkreder.com/2011/06/01/mic-fix-acer1410/
The google-talk plugin was updated today, and it now works in firefox ootb (instead of only Chrome); unfortunely i ran into this mic bug on my original Acer Aspire One. The pavucontrol single-channel workaround doesn't work for long, because the gtalk plugin resets both channels to the same volume. Matias's jackd workaround in #22 didn't workforme either. It's funny: my video's fine, but the mic isn't, and usually the problem is just the opposite. :) (Maybe a kernel module cmdline workaround will work?) (was going to put a smolt link here, but smoltSendProfile failed)
I can confirm this bug for Fedora 15 x86_64
http://www.smolts.org/client/show/pub_4093e29d-803c-4dcc-9c95-751fdb93f30f
Microphone input doesn't show up in any of the settings under System Settings->Sound->Hardware->Settings for the selected device (there is only 1 device) It consistently insists that is takes input from the Internal Audio Analog Stereo
The solution detailed in 802316 worked for me on an Acer Aspire One 722 with Fedora 16 x86_64. https://bugzilla.redhat.com/show_bug.cgi?id=802316
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