From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9b5) Gecko/2008043010 Fedora/3.0-0.60.beta5.fc9 Firefox/3.0b5 Description of problem: When I attempt to use the built in mic in a Dell Inspiron 1525 the volume level is very low. alsamixer shows the volume level at 100% for all devices. I've played around with the gnome volume control trying looking for a configuration that produces normal sound levels with no success. It doesn't matter which capture tracks are selected or which of the two mics. The laptop has two mics, one analog the other digital. Results are the same on both. Version-Release number of selected component (if applicable): pulseaudio-0.9.10-1.fc9.x86_64 How reproducible: Always Steps to Reproduce: 1. Open gnome-sound-recorder 2. Record a test message 3. Play back the message Actual Results: The sound is at a very low level - almost inaudible. Expected Results: Sound levels should be at normal level. Additional info: attached is a file with outputs from lspci, dmesg, and /procs/asound/cards
Created attachment 309444 [details] System information
Please play around with alsamixer -c0!
(In reply to comment #2) > Please play around with alsamixer -c0! my alsamixer output states that every volume is at 100%
Created attachment 313650 [details] amixer -c0 output
If you try to record without PA, i.e. with arecord and then play back with aplay, does it work correctly, then?
It seems to me that the volume is as low as the gnome-sound-recorder, so I would guess that it has more to do with alsa and drivers then with PA.
Bumping the version to 10 as it still affects the F10 version
Should this bug component be changed to "alsa"?
Ok, the story goes like this: some sound cards record audio only in very low resolutions and store that in the LSBs of the PCM samples. To make this a usable signal for applications all samples need to be digitall amplified. PA can do that just fine, however no volume control application actually exposed this, i.e. the end of the volume slider is at 100%. For digital amplification it should go much higher. The version of gnome-volume-control now exposes digital amplificatin fr up to 60dB. This should fix all issues.