The red light is the optical digital audio output. You can toggle it on and off. I cannot test exactly where to go to do this right now, but I'd imagine that you can do it in System > Preferences > Sound
I don't know that this will help with your overall problem though. -- Headphone jack doesn't work on MacBook 5,2 https://bugs.launchpad.net/bugs/559962 You received this bug notification because you are a member of Mactel Support, which is the registrant for Mactel Support. Status in Mactel Support: New Status in “alsa-driver” package in Ubuntu: New Bug description: Steps to reproduce: Play audio, and plug in some earphones in the headphone jack What happens: Audio continues to play through the internal laptop speakers, and not the earphones What I expected to happen: The internal laptop speakers should mute and the audio should play through the earphones plugged into the headphone jack. This happens on a MacBook 5.2 running a fully updated 10.04, and the red LED that is in the jack socket is on. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: alsa-base 1.0.22.1+dfsg-0ubuntu3 ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1 Uname: Linux 2.6.32-19-generic x86_64 NonfreeKernelModules: nvidia wl AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: david 1272 F.... pulseaudio Card0.Amixer.info: Card hw:0 'NVidia'/'HDA NVidia at 0x93480000 irq 15' Mixer name : 'Realtek ALC889A' Components : 'HDA:10ec0885,106b4a00,00100103' Controls : 36 Simple ctrls : 20 CheckboxSubmission: 964577283426ce3979712f6e13f79f2a CheckboxSystem: 7e42599bda39ea7ff8b528272b6ef52b Date: Sat Apr 10 12:16:07 2010 InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) PackageArchitecture: all ProcEnviron: LANG=en_GB.utf8 SHELL=/bin/bash SourcePackage: alsa-driver dmi.bios.date: 04/16/09 dmi.bios.vendor: Apple Inc. dmi.bios.version: MB52.88Z.0088.B05.0904162222 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-F22788AA dmi.board.vendor: Apple Inc. dmi.chassis.asset.tag: Asset Tag# dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-F22788AA dmi.modalias: dmi:bvnAppleInc.:bvrMB52.88Z.0088.B05.0904162222:bd04/16/09:svnAppleInc.:pnMacBook5,2:pvr1.0:rvnAppleInc.:rnMac-F22788AA:rvr:cvnAppleInc.:ct10:cvrMac-F22788AA: dmi.product.name: MacBook5,2 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. _______________________________________________ Mailing list: https://launchpad.net/~mactel-support Post to : [email protected] Unsubscribe : https://launchpad.net/~mactel-support More help : https://help.launchpad.net/ListHelp
