Build-in Mic on MacBook 4,1 does not work

Bug #289552 reported by Jens-Christian Lache on 2008-10-26
Affects Status Importance Assigned to Milestone
Mactel Support
linux (Ubuntu)

Bug Description

Binary package hint: linux-image-2.6.27-7-generic


~$ sudo dmidecode -s system-product-name

Linux: Ubuntu 8.10 RC

ALSA: 1.0.17.dfsg-2ubuntu1

The built-in Microphone of the MacBook does not work. I have tested it with "gnome-sound-recorder", Version
When recording with the tool, the time is moving way to fast. It will hang, when pressing stop.


Jens-Christian Lache (beauman) wrote :

lspci|grep Audio:

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)

To rydberg: Please see

(Sorry to contact you this way, didn't know how to reach you.)

friendly regards, beauman

Am Sonntag, den 02.11.2008, 10:55 +0000 schrieb rydberg:
> *** This bug is a duplicate of bug 268301 ***
> ** This bug has been marked a duplicate of bug 268301
> ubuntu 8.04 Macbook Air Mic not working

Jason Ribeiro (jrib) wrote :

Adding solution posted in bug #268301 originally:

>The instructions I've placed at work for me on my MacBook 4,1 on Intrepid. Can others comment if those instructions work for them on their hardware? (Comment only if the hardware is not mentioned in a previous comment or if your experience differs from that of a previous comment to keep the bug comments tidy please).
>So at least for the Macbook 4,1 it seems like it is just some default settings that need to be changed. I'm not sure what package/software is responsible for detecting and enabling the relevant settings changed in the wiki.

Here are the instructions:
1. Open Volume Control by right clicking on the volume icon and selecting "Open Volume Control".
2. Click on Preferences and enable Capture, enable Mic Boost, and then close Preferences.
3. In the Recording tab of Volume Control, raise the Capture level.
4. In the Playback tab of Volume Control, raise the Mic Boost level.
5. Test by running gnome-sound-recorder. Ensure that "Capture" is selected in the "Record from input" dropdown.

Jens-Christian Lache added:
> In "Audiosettings", I also had to set the recording source to "HDA Intel ALC885 Analog (ALSA)" for Audioconferencing.

Thanks Jason for posting these instructions. They worked for me. So there's nothing wrong hardware-wise, but the default settings should still be changed to make the mike work out of the box.

kernel-janitor (kernel-janitor) wrote :

Hi Jens-Christian,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 289552

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

tags: added: needs-kernel-logs
tags: added: needs-upstream-testing
tags: added: kj-triage
Changed in linux (Ubuntu):
status: New → Incomplete
Jeremy Foshee (jeremyfoshee) wrote :

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

tags: added: kj-expired
Changed in linux (Ubuntu):
status: Incomplete → Invalid
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