MacBook Pro :: Output Volume Is Not Working?

Apr 24, 2012

My output volume on my MacBook Pro is not working. When I go to "Settings", then "Sounds", then "Output", I can not slide the volume bar at all, or change it in the menu bar?

Info:
MacBook Pro

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Sep 7, 2009

I have found the Max volume in OS X to be lower than I would like - especially when viewing DVDs or online movies. Is there a way in which I can adjust the system maximum volume output? Connecting external speakers is sometimes an annoyance.

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MacBook Pro :: Optical Audio Output Not Working?

Jan 19, 2010

I have purchased a optical audio cable to hook up my 15" mbp to my LCD.One end is the toslink and the other end is the toslink adapter, when I put both end into its place. The speaker icon turns gray and I cannot adjust the sound level and the music stops from the laptop speaker.Also, the optical digital audio out option is not showing up in audio preference.

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MacBook Pro :: 2010 - HDMI Output Not Working?

Jun 12, 2010

I've got an issues with my HDMI output - most of the time when I connect to my tvs the laptop doesn't display anything on the tv (although its detected) my tv's just say searching.

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MacBook Pro :: Right Channel Output Not Working Properly?

Sep 10, 2014

I recently purchased a Retina Macbook Pro 15" no more than 3 months ago. 

Today I just noticed that whenever I connect my headphones I can hear the left channel clearly but the right channel is a lower volume and distorted. 

at first I thought it was the headphones, but have tried various ones and it doesn't seem to be that. 

Also, output from the internal speakers sounds fine, same level on both channels and clear 

Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.4)

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OS X :: MacBook Sound Not Working - No Output Devices Found

Jul 11, 2009

My sound has completely quit working. In the sound system prefs I get a massage saying "No output devices found". If I press the volums button keys the onscreen display comes up but has a 'no access' icon on it (a circle with a line through it). The icon in the toolbar has also vanished and there's just a blank space in its place.

Oddly whatever happened also seems to have effected my ability to view Flash movies -*the will play for a few seconds an then pause *they don't stutter they just pause. I think that whatever the issue is it was caused by a force shut down. All my applications were hanging so I had to press down the power button for a few seconds. Since then nothing!

This also effects the start-up sound which I don't get and all users of the machine are the same so it's not a case of deleting users prefs. So far I reinstalled the latest system using combo updater, run disk utility to repair disk/privileges (from start up disk) and zapped the PRAM.

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MacBook Pro :: Sound Not Working - No Output Devices Found?

Mar 27, 2012

All of the sudden the sound on my MacBook is no longer working. When I look at System Preferences>Sound>Output it says there are no devices found, even when I plug in external speakers.

Info:
MacBook Pro, Mac OS X (10.5.2)

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MacBook Pro :: External Speakers Not Working For Audio Output

May 21, 2012

I have owned my MacBook Pro since June 2010, and have always used a pair of independently powered (via adapter) external Dell speakers for audio output. Since upgrading to Lion about 1 month ago, I was having intermittent audio issues, which were resolved by re-starting my computer (not ideal but it worked). Today, the speakers just stopped working. The internal speakers work, but when I plug the externals into the headphone port, they don't produce sound. Earbuds in the same port also don't work (I know the earbuds are good). The external speakers are being recognized by the sound panel in system preferences.

Info:
MacBook Pro, Mac OS X (10.7.4)

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MacBook Pro :: HDMI Output To TV Suddenly Stopped Working

May 28, 2012

I have a one month old "late 2011 model" unibody Macbook Pro where the HDMI output just suddenly stopped working with no changes in configuration. I've tried resetting the PRAM and SMC, switched HDMI cables, cold rebooting everything, tried different HDMI ports, different resolutions on the TV and switched audio output settings, nothing works. When I plug the cable in the Mac switches resolutions, recognizes the TV in the Displays preference panel and correctly identifies it as a Toshiba, but doesn't send any audio or video signals to the TV.

Info:
MacBook Pro (15-inch Late 2011), Mac OS X (10.7.4)

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MacBook Pro :: Mini To HDMI Output No Longer Working After Update?

Sep 12, 2010

I have a 17" unibody MBP (most current version) with 10.6.4, and I downloaded the recent firmware updates for the MBP's. Before I did this, the mini port to HDMI video/audio output was working perfectly, I could watch anything right off my MBP. After installing the updates, when I plug in the cable, my MBP flickers, goes blue, and then comes back, but the TV does not detect the signal from the laptop. In the Display and Sound menus in System Preferences, there's no option to set up a second display like there was before.

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MacBook Pro :: Stuck On Digital Output - Internal Speakers Not Working

Jul 12, 2009

The sound output in my Macbook Pro has been going in and out now for a number of months. And yesterday it finally got stuck on "Digital Output" meaning when I take out headphones from the jack, the internal speakers do not work. I am planning on taking it in and wanted to know, since I am still under warranty will Apple repair it, or give me a new one?

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MacBook Pro :: Volume On It Isn't Working

Apr 7, 2012

Im trying to use the keyboard for my volume but it isn't working.

Info:MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3)

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MacBook :: Volume Not Working In Vista (mac)?

May 18, 2010

I just installed Windows Vista on my MacBook pro, and first time everything seemed to work fine. But i couldn't open the Bootcamp application and the volume wouldn't work no matter what.
I tried putting my mac OS X install DVD back in and 'repaired', after this the Bootcamp application works, but i still can't get sound? It says no output is installed or something like that.

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MacBook Pro :: Volume Buttons On It Not Working?

Mar 22, 2012

My volume buttons aren't working, the icons appear on screen but don't control the volume at all.

The only way I can control the volume is by using the output volume scroller in system preferences. How can I get the buttons to control volume again?

Info:
MacBook Pro 2.93 Ghz, Mac OS X (10.5.6)

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MacBook Pro :: Volume Buttons On It Are Not Working?

Mar 22, 2012

My volume buttons aren't working, the icons appear on screen but don't control the volume at all. The only way I can control the volume is by using the output volume scroller in system preferences. How can I get the buttons to control volume again?

Info:
MacBook Pro 2.93 Ghz, Mac OS X (10.5.6)

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Hardware :: Volume Not Working From Keyboard On MacBook?

May 10, 2009

When I adjust my volume controls on my keyboard, F10 thru F12, to listen to audio out loud, I get this picture (attached). However, if I am listening to headphones, the volume still works.

I tried shutting down and restarting, and I've been thru my preferences. The drop down volume control on the top right of the screen is set to as loud as it can go.

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MacBook Pro :: Speaker - Volume Controll Not Working

Aug 9, 2009

I just got the new 15" Macbook Pro a few days ago. My first Mac

Anyway, when I plugged my external speakers into the headphone jack of the MBP, the volume control (both in the Apple bar thing on the top of the screen and the F10/F11 buttons) switched so it would control the external speakers, as it should. The problem started when I unplugged the speakers and went to use the internal speakers again.

And the volume control doesn't work. If I push F11 for volume up, the little screen appears and it looks like the volume is going up, complete with the little water drop sounds, but it doesn't actually adjust the volume. If I plug the speakers back in, it will control the speakers properly, but I can't figure out how to make it control the internal speakers again

I'm sure that if I restarted it would fix itself (probably), but that's a real pain as I am frequently plugging in and unplugging speakers to my laptop.

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MacBook :: Volume Keys Stopped Working ?

Oct 3, 2009

My volume keys on my MacBook have stopped working. All otherkeys work fine. Tried re-setting the PRAM and nothing. Made sure the voiceovers and such were disabled as well.

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MacBook Pro :: Volume Up / Down Keys Aren't Working?

May 16, 2012

My up-volume and down-volume keys aren't working. I can only control the vol from the sound in system preferences.

Info:
MacBook Pro

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MacBook Air :: Volume And Other Function Keys Not Working As They Used To

Jun 21, 2014

The volume and other function keys aren't working as they used to. The brightness key doesn't do anything and the volume key isn't working either. I've tried to fix it on system preferences but it didn't work. They're not set to be used like normal function keys. I don't know what is happening they were working fine.

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MacBook Pro :: Volume Keys Not Working With Internal Speaker

Apr 21, 2010

On my new 15inch mbp the volume keys have suddenly stopped working. I checked in system preferences that the use F1 keys as standard is not selected. When I plugged in speakers or headphones the volume keys work as normal. But with just internal the little picture on screen comes up so the keys work but it doesn't affect the volume?

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MacBook Air :: Function Keys Not Working For Brightness Or Volume?

Mar 21, 2012

I have a 2011 (?) macbook air and ever since my trip to the genius bar for a battery issue my function keys don't work after I wake it up (just opening screen).  May also be related to last firmware update?   

I have checked the function key mapping in settings and they are normal.  The volume key launches Expose and the brightness keys (and others) don't do anything.  A reboot helps but only untill the first time I put it to sleep (close/open lid). 

Info:
MacBook Air, Mac OS X (10.7.3)

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MacBook Pro :: Volume Quit Working On Internal Speakers?

Apr 23, 2012

The volume quit working on my computers speakers. I try to hit the up volume and a greyed out speaker appears showing volume bar all the way up with a circle below it with a line through it?

Info:
MacBook Pro, Mac OS X (10.5.8)

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MacBook Air :: 2011 - Brightness / Volume Keys Not Working

Aug 21, 2014

Really stumped by this. Recently (I think it was after a MacOS update but I'm not sure) my brightness and volume keys stopped working on my 2011 13" MacBook Air running MacOS 10.9.4. The F keys still work i.e. if I press Fn-F10, I get the expected effect from pressing F10, but if I just press F10, volume remains unchanged (should get muted). Mission Control, Launchpad, and media keys (rewind, play/pause, ff) all work. 

Using Karabiner, I checked to make sure the keys generate correct events. They do. Pressing the brightness keys generates 0x3 and 0x2. Pressing the volume keys generates 0x7, 0x1, and 0x0, which are the expected key codes defined in ev_keymap.h, the header file for HID. I can also adjust volume and brightness using the sliders in the appropriate section of "System Preferences." 

So volume and brightness itself can be changed. They keyboard keys themselves work and produce correct keycodes. But whatever operating system feature (HID?) that is supposed to read the keyboard input and translate it into commands to the display and sound drivers doesn't work. 

I've tried all the obvious stuff (restart, safe mode, toggle the Function key option in System Preferences->Keyboard). I've reset SMC and PRAM. Nothing has worked so far.  

The only other thing I can think of is that a while back (before this problem started occuring) I got annoyed by the power button in the top-right corner of the keyboard, which I would occasionally hit accidentally. I searched for a way to disable it, and I think I found something -- now it only does something if it's held for 2 seconds. A quick up-down strike does not do anything. Perhaps in tweaking some setting to achieve this behavior (I don't remember what I did), I screwed up something with the brightness/volume keys, but this screw up only became evident later. 

Info:
MacBook Air, OS X Mavericks (10.9.4)

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MacBook Pro :: After Update Keyboard Shortcuts For Volume Control Not Working

Mar 12, 2012

I recently ran an update for my Macbook Pro. After the update, the volume keyboard shortcut does not work. I have the setting for the function keys to work like normal function keys so I have to press the fn key to change the volume. This does not work and changing the setting does not work. I cannot add a shortcut either. Whenever I push the shortcut, I get a grayed out screen with a symbol showing that I cannot change the volume. I can still make changes by clicking on the volume symbol at the top of my screen but I really need the shortcut back.

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MacBook Pro :: Builtin Speakers Not Working - Volume Control Is Greyed Out

Jun 5, 2012

Speakers are not muted, according to system profiler, they are connected. Won't let me turn them up or down, even though they are set to the highest setting. Basically the volume control is greyed out. 

Info:
MacBook Pro, Mac OS X (10.6.8)

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MacBook Pro :: Has Full Charge But Wont Work Sometimes And Also Volume Is Not Working?

Jul 1, 2012

i charge my macbook pro at nite and i turn it off but when i wake up in the morning it has no charge....and also the volume isnt working

Info:
MacBook
Pro, Mac OS X (10.6.8)

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MacBook Pro :: OS X Mavericks (10.9.3) Screen / Keyboard Dim And Volume Buttons Not Working

Jun 4, 2014

I have a late 2008 model macbook pro and the resent update to 10.9.3 has made my screen dim, keyboard backlight dim, and volume special functions to stop working?

Info:
MacBook Pro, OS X Mavericks (10.9.3)

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MacBook :: Keeps Switching Between Internal Output And Digital Output For Sound?

Jun 19, 2012

My sound keeps turning off. When I check the settings, the output device switches randomly between Internal and Digital output. I have no idea where the Digitial Output is coming from and this started about a month again. It switches randomly and then I loose all sound for a few seconds. Sometimes it happens once then stops for a few days, other times it switches back and forth for 5 min. No idea!!! 

Info:
MacBook, Mac OS X (10.6.8)

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Laptops :: Sound Output Not Working

Jan 9, 2009

I just opened up my MacBook about an hour ago, and for some reason the sound output isn't working. System preferences are as they should be (mute is not activated). I'm assuming that this is a hardware problem, but am hoping that somehow it is not. It's completely mute, btw, no sounds of any kind. When I restarted it, no sounds when it booted up again.

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