Sound output to headphones when external HDMI monitor is connected

It seem that connecting an external HDMI display disconnects the headphone jack output.
Does anyone know how to rectify this issue?
Kevin

Which product are you asking about?

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Using my mid 2012 MB Air with an external HDMI monitor question.

Am wanting to use my mid 2012 MacBook Air 13 inch running Mavericks with an external HDMI monitor.
I've got a thunderbolt to HDMI adapter which I've plugged in and am able to redirect the sound to my speaker equipped external monitor by choosing it in the sound output preferences box.
BUT I've got a picture displayed on both my air and monitor.
My question - is it possible to switch the display so that it only shows on the external monitor - I'm only wanting to display the same picture on both displays.
Finally is it possible to show one screen on the Air and a different one on the HDMI Monitor.
Thankd

Try  > System Preferences > Displays > Arrangement > Mirror Displays (or not).

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setop: T440S (20AQS00500) with Ultradock and external HDMI monitor
Today I updated the Firmware of my Ultradock to Firmware version: 2.17.000 to resolve the famous 3sec blackscreen that is describes in so many places. That did in deed resolve that problem
I also updated my BIOS using the Lenovo Solution center to GJET74WW (2.24)
But now, when I boot, I do not see any of the BIOS diagnostic on my external monitor.
If I hit F1 the external monitor still stays black.
That would be harmelss. But I also run Truecrypt and the Truecrypt prompt does not show on the external monitor.
I have to blindly type my Truecrypt password and then Win7 shows nicely on the external screen.
Our of the dock I went into the BIOS and made sure the display is set to "docking station".
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There should be a BIOS toggle for display priority at boot. I'm not sure if it still exists in the T440s or exactly where it is though.
EDIT: http://service.lenovo.partner-management.com/content/CoursewarePublic/15418/T440s_BIOS_Simulator.swf
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Is it possible to use an HDMI monitor as an external preview monitor when editing with Premiere Pro CS6? If so, then how is it connected, and where can i find the correct tick box in
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Problems with the sound in the headphones when you press the keys iphone 5s

Sound distortion " keyboard clicks " headphones.

Greetings alexsuperpechen,
If you are getting distorted sound output through your headphones when you use your iPhone's keyboard, I would suggest that you troubleshoot using the steps in this article -
If your headset isn't working - Apple Support
In particular the first troubleshooting paragraph -
You can fix most headset issues with a few steps. Try these first:
Make sure that the headset has a built-in microphone.
Unplug the headset and clear any debris from the headset jack. Then plug it back in.
Make sure the headset is plugged in all the way. If you’re using a case, remove it to make sure it’s not getting in the way.
Check the headset cable, connector, remote, and earbuds for damage. Make sure they’re not blocked or dirty.
Try using another headset. If the issue happens with the other headset, contact Apple Support for help. If the other headset works, contact the headset manufacturer.
Try using a different iOS device with your headset. If the issue happens with the other iOS device, contact the headset manufacturer. For Apple headsets, contact Apple support.
Thanks for using Apple Support Communities.
Be well,
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No sound output thru headphones of midi-controller keyboard

Hi,
I'm new to Logic and am encountering the most basic of problems: I can't hear any sound from my headphones of the midi instruments played with my keyboard controller. I ran several searches in the Logic Discussions archives, but didn't find anything about this particular scenario...
My keyboard controller is connected with a USB input, and the drivers have been properly installed. I cued up a new project, set my audio preferences for headphones out, checked those settings via i-Tunes, then selected a software piano and laid down a track whose volume and notes are both registering fine. Everything looks like its working great -- I just can't hear the signal.
With this same set-up of my keyboard controller, I opened up Ableton Live and played a software piano instrument there, only this time I could hear everything fine.
I flipped through the midi sections in the User's Manual and carefully the scanned the Logic interface for something to toggle that I may be missing, but so far no luck.
Please tell me what I'm not doing! I know it's gotta be super basic...
Many thanks....
Chris
Message was edited by: Chris Fizay

Weird.... After typing my question above, I did 2 things: I toggled the parameter on my controller for controller-only mode (to mute its synth output signal) and I tried using a damper pedal on my controller, with mixed results, after which I shut it down and fired it back up again, only to find that I had lost the output signal coming from my audio interface headphones jack. When I transfered my headphones back to the original headphones jack on my computer, I heard a signal...after resetting my Midi drivers from the now non-working audio interface to the synth/controller.
I guess my question at this point is, as a newbie to MIDI, how finnicky is MIDI? Does it require more intuitive and careful fiddling than I'm accustomed to in just keeping my computer running from day to day?
Confused....
Chris

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After a bit of searching on the discussion boards I realise that the ATC will not back up 'Lib' when the Seagate is connected by USB directly and that ATT will back it up if it is connect to my Mac and set not to exclude Lib BUT I am encountering some problems with this scenario when I activate time machine.
When I disconnect the Seagate by using 'disconnect' in the ATC viewer in Finder I shut down the drive before disconnecting the usb and reconnecting to the Macbook Pro just as a precaution. When i connect and then activate back up using Time Machine selecting the ATC data folder, it is showing no previous back ups and never backed up. When I had the Seagate connected to the ATT I was seeing back ups as far as 6th May when I bought the ATC. I know that the Time Machine backups are not on the Seagate as I had to reformat it a few days ago and use Data Rescue 3 when I lost the ability to see any files on it after disconnecting it from the ATC. I saw the 6th May backups in Time Machine before I disconnected the Seagate a few minutes ago so they must be on the ATC - just not showing after the Seagate was disconnected.
Can anyone talk me through what may be happening here and advise on the best way of managing this. I'm already planning to buy another external drive as the Seagate is getting a bit old now and I realise I should have secondary back up. I should just say that the reason for bothering with the shared external drive is so that we can all access the photos and household files over the wireless network using ATT. I would just like it to be backed up with minimal fuss if possible.
Many thanks in anticipation of some help with this
I

I would fix the problem by simply installing a more flexible backup software. Carbon Copy Cloner costs US40. And it is licensed so you can load it on all the computers in your house.
It can backup the external drive while connected to the TC, although if you are using wireless it will be sure slow.
Including the external drive in your backup with TM, is just messy. It will work.. and although you are not seeing the previous backups, they are there.. but TM cannot see them until it reconnects with the external drive in place. Once it reconnects it will need to deep scan the previous backup.. you are going to find a simple backup takes far longer than you want. It is also difficult to recover from.
See Q5 here http://pondini.org/TM/FAQ.html
And several other comments in Pondini's KB will be helpful to understand. Sadly the guy who wrote it died before Mavericks came on the scene.. but it has more bugs than ever. TM has become less reliable for a lot of people.. and that is not doing any swapping of disks.
TM is honestly great for simple backups of your OS and particularly for incrementals but getting a clone of the disk like your external is far better for your setup.
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I recently purchased HDMI cable and adaptor, so that I can play downloads from my Macbook Air on my TV. There is only sound from the Macbook, not the TV - Do I need as separate cable for sound?

I've got the same issue: when I connect my Macbook Air (2011) to TV via HDMI cable there's no sound through the TV system, only from the Macbook Air. I used to use my older Macbook Pro with the same HDMI adapter and it worked just fine, but not with the Macbook Air it doesn't.
My software is up to date. I tried to select the TV as an output option in sound preferences, but it doesn't yield any results.
Rebooding multiple times doesn't help either.
Any suggestions on how to tackle this problem?
Thanks in advance.

Upon wake external HDMI monitor resets

Ok, I hope I explain this with enough detail. On my new macbook pro I have always used a 21" dell DVI monitor. Well, I bought my wife an older 2009 macbook pro and decided to give her the old dell 21" external and buy me a new 27" samsung HDMI external montior. So I plug in my new macbook pro to the samsung 27" and let my macbook pro go to sleep, when I wake it up all my windows that were on the samsung 27" are now back on my main laptop display like I just plugged in the external monitor. The monitor is awake and does have my background image on it. I have tried to debug this before and found that regardless of what I try my macbook 2011 does this. It acts like everytime upon wake that I am just now pluggin in the external monitor with multiple blue screen flashes at the login prompt. The reason I bring this up again is that I just bought my wife a new macbook air and decided to test it all again tonight and her new 2011 macbook air works just like it is supposed to with the external monitor. So now I have 3 macbooks and mine is the only one that does not work with my new monitor. Anyone have any suggestions on this one? BTW, all macbooks work fine with the dell monitor too.
All are running Lion 10.7.2
macbook pro 2011: AMD Radeon (Problem child)
macbook air 2011: Intel
macbook pro 2009: NVidia
Thanks,
Shane

I have the exact same problem although on my Macbook Pro from 2012 using a Mini Displayport to DVI adapter. I can sometimes get it to work by putting the computer to sleep, unplugging&replugging the displayport, and then waking it up. For me, it started happening in 10.8.2 and then seemed to get worse in 10.8.3. I suspect it might be hardware that's slightly out of spec and thus detects the displayport change but then don't go any further.

[Solved] No sound output for headphones / ALC269VB & ALSA

I have installed Arch with XFCE on my Asus 1015PW netbook.
The sound is working fine on laptop speakers but when I plug in headphones/connect my speakers, nothing happens.
Output of aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
I have installed alsa-utils alsa-oss alsa-firmware
Output for lsmod | grep 'snd'
snd_hda_codec_realtek 45115 1
snd_hda_intel 37352 3
snd_hda_codec 150017 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 6332 1 snd_hda_codec
snd_pcm 77822 3 snd_hda_codec,snd_hda_intel
snd_page_alloc 7298 2 snd_pcm,snd_hda_intel
snd_timer 18718 2 snd_pcm
snd 59029 10 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_pcm,snd_hda_codec,snd_hda_intel
soundcore 5418 1 snd
I have tried all of these
ALC269/270/275/276/28x/29x
======
laptop-amic Laptops with analog-mic input
laptop-dmic Laptops with digital-mic input
alc269-dmic Enable ALC269(VA) digital mic workaround
alc271-dmic Enable ALC271X digital mic workaround
inv-dmic Inverted internal mic workaround
headset-mic Indicates a combined headset (headphone+mic) jack
lenovo-dock Enables docking station I/O for some Lenovos
dell-headset-multi Headset jack, which can also be used as mic-in
dell-headset-dock Headset jack (without mic-in), and also dock I/O
No idea how it happened, but it's working now. Can this post be deleted? I can't find a way to do it.
Last edited by drum-a-deir (2014-03-18 17:39:36)

Report your post and ask that it be deleted. Use the "Report" button at the bottom right of the post. An Admin will look at it and decide.

Sound drops off when using hdmi outport to connect computer to an AV reciever

Satellite M640,I5 2410 processor, windows 7HP. After about three minutes the sound drops off when connected to the av reciever through the hdmi outport. If I touch the trackpad the computer reconnects for another three minutes and then disconnects. If I touch the the trackpad about every two minutes the computer stays connected indefinetly. This problem does not occur if I use the computer to play an audio CD. Any fix suggestions.

Hi peter,
try to repair your permission by open application folder > utilities > disk utility > repair permission.
It should fixed the unexpectedly quit for several applications.
And try to get latest info from Griffin sites, maybe this one will help too:
http://www.griffintechnology.com/support/article.php?artnum=314
ps: why not try macbook built in microphone?
Good Luck.

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I have my Vision box coupled to my Yamaha AV amp by HDMI cable. When switching the Yamaha inputs to the Vision box I get no sound . If I switch the box off and back on again then all is OK.
Does anyone have any ideas. I have a Humax freesat bos also connected that way but that works OK as above when switched to it

I have a similar problem, but not with my Vision box.
I have four HDMI inputs going into my AV receiver: Vision; DVD; Apple TV and; Freesat HD. I can switch between them all quite happily with the exception of the Freesat. If I switch to Freesat then I will always get a blue screen until I turn the Freesat off and on.
It's a little annoying but you learn to live with it.

External hdmi monitor connection causes airport wireless to fail

When I connect my 24" iMac (early 2009) to my Samsung 40" LCD TV using an HDMI display adapter and an HDMI cable, my built-in airport wireless connection stops working.
The airport will see wifi connections, but constantly prompts for the WPA password and refuses to connect. Occasionally it will connect, but only for a short time, and "ping times" to my router (small network packets) are large and sporadic.
This only happens when the adapter/cable are completely connected to the TV, and the TV is on. Of course this makes watching hulu.com on the TV very difficult!
Does anyone have any ideas?

Try resetting PRAM
http://support.apple.com/kb/HT1379
and if that does not help, resetting SMC (power management)
http://support.apple.com/kb/HT3964
which is unplugging the iMac and reconnecting using a precise procedure. You should disconnect ALL cables from the iMac when you do this. If you have been using a power strip to connect your power cord, try connecting directly to a wall outlet for this test. Power up with nothing connected except for the power cord, then connect only the keyboard/mouse. After confirming everything is working, including the AirPort connection, connect the external display. Does the problem recur or not?

External HDMI Monitor Slows Down Macbook Pro to Unbearable Speeds?

I have my 2011 17" macbook hooked up via a Moshi HDMI adapter to a 24" Acer 1080p monitor... While the image shows properly it makes the computer completely unuseable. I can't play videos and it lags up the machine really bad. I don't get it... i paid $3000+ for this machine and it can't output a smooth HDMI signal without crushing the system? Is this happening to anybody else? Any solutions?

Yeah i was just about to post the Activity monitor before / after results.... here is what happens.. the results are stunning to say the least:
PRE-Thunderbolt-->HDMI Adapter:
CPU:
User - 1.5%
System - 2.5%
Idle - 96%
Memory:
Free : 5.9 gb
AFTER PLUGGING IN THE ADAPTER AND HOOKING UP THE MONITOR
CPU:
ALL CORES JUMP TO 80% +
%USER: 4.25
% SYSTEM: 77.33%
% IDLE : 16.70
Memory remains stable.
THE PROBLEM IS OBVIOUS.
Something is causing the system CPU to become completely innefecient. It takes about 10-30 seconds for this proccess to occur. At first, the CPU remains low, but as soon as any content hits the second screen every core jumps to being 70-80% occupied, and this is JUST with firefox running.
Any help? Could apple store do anything to help me out?

Sound output to headphones when external HDMI monitor is connected

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