Public bug reported:
Binary package hint: gnome-media
The external mic provides no input signal. gnome-volume-control shows the input
channels "internal microphone", "analog line-in", "rear microphone" and "analog
microphone". None of these pick up anything from the external microphone.
"Hardware" is set to "Analog stereo duplex", but I also tried "Analog Surround
4.0 + Analog Stereo Input" without success.
Internal mic works (verified with gnome-volume-control and gtk-recordMyDesktop).
External microphone hardware was verified with another computer.
Natty (dev. branch) on a MacBookPro6.2
lspci identifies the sound card as:
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High
Definition Audio (rev 06)
Subsystem: Intel Corporation Device 7270
gnome-media:
Installed: 2.32.0-0ubuntu6
Candidate: 2.32.0-0ubuntu6
Version table:
*** 2.32.0-0ubuntu6 0
500 http://de.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-media 2.32.0-0ubuntu6
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: nvidia wl
Architecture: amd64
Date: Sun Mar 27 00:09:33 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64+mac (20110323)
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-media
UpgradeStatus: Upgraded to natty on 2011-03-26 (0 days ago)
** Affects: gnome-media (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty running-unity
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https://bugs.launchpad.net/bugs/743368
Title:
No signal from external mic on MacBookPro
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