HDTV as monitor via hdmi no signal

So I recently purchased my macbook pro 13" as my first mac and I've got to say that I love it. However, the one thing that has given me problems is when I try to use my HDTV as a monitor. It is an Insignia ns-32LCD. I am using a Rocketfish mini display to hdmi adapter. My Mac will detect a monitor and show me options for resolutions, but the TV still displays "no signal." As I'm new to the Mac I was wondering if there was maybe some display settings I am simply not familiar with as I have confirmed with Insignia that everything is connected and running correctly on the TV end. Thanks in advance!

Make sure the input settings on the TV are correct then restart both the TV and the Mini.

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My latest MacMini is unable to detect my Samsung monitor via HDMI direct connect.

Hi
My MacMini (current model ie 1 week old) is unable to detect my Samsung monitor (it is about 6 months old and comes with HDMI port) via HDMI.
However, it is possible if I were to use the HDMI/DVI converter that comes with the MacMini.
FYI, I have tried swapping the HDMI cable but the result is still the same. I prefer to connect the the monitor directly to the MacMini without going thru the HDMI/DVI converter and appreciate any assistance.
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Hi all
Finally I managed to get my Mac Mini connected to the Samsung monitor via HDMI-HDMI.
Below is the cut and paste of the thread I just posted which explains all.
Thank you again everyone for the advice and support.
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Re: No Signal on HDMI TV After Lion Upgrade Sep 10, 2011 11:20 AM (in response to
Mac80)
Hi Mac80 I have been struggling for the past couple weeks since I purchased my Mac Mini (a few weeks back) to connect to the Samsung B2430 LCD monitor directly via HDMI-HDMI but to no avail i.e. "no connection detected" Fyi HDMI-DVI works, but I just wanted the HDMI-HDMI instead. I did exactly what you advised i.e. pull out the HDMI cable from the Mac Mini; power up & power down the Mac Mini; reconnect the HDMI cable to the Mac Mini; power up again... Wooa...lla... for some strange reason & though somewhat "primitive":-) ... It works. It can now detect my monitor at 1080p. I just shut down and switch it on again to make sure that it is not a fluke, it works! Fyi I just acquired another Samsung LED 27" monitor SA550 (same problem as above inititially but got it working via the above approach) Thanks alot Mac80 and really appreciate it! jJpecke

Hello, I have a Macbook pro retina-2013. About Mavericks I could set my 4K monitor via HDMI on 2560x1440. This I can not get through at Yosemite. Can someone help me there?

Hello, I have a macbook pro retina-2013.
About Mavericks I could set my 4K monitor via HDMI on 2560x1440.
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They really pushed that it would all work great! Has anyone had the same struggle? Are there any step-by-step instructions to get linked up?
Call Verizon's wireless tech support & explain your problem to them. They will provide "step-by-step" instructions over the phone.
Take notes too!
TIP: If you do call & don't want to go through all those darn promps, when you initially call, just don't say anything. The automatic voice will then say, "will connect you to a service rep."

Hello, I have a Macbook pro retina-2013. About Mavericks I could set my 4K monitor via HDMI on 2560x1440. This I can not set at Yosemite. Can someone help me there?

Hello, I have a Macbook pro retina-2013. About Mavericks I could set my 4K monitor via HDMI on 2560x1440. This I can not set at Yosemite. Can someone help me there?

They really pushed that it would all work great! Has anyone had the same struggle? Are there any step-by-step instructions to get linked up?
Call Verizon's wireless tech support & explain your problem to them. They will provide "step-by-step" instructions over the phone.
Take notes too!
TIP: If you do call & don't want to go through all those darn promps, when you initially call, just don't say anything. The automatic voice will then say, "will connect you to a service rep."

HD 4600 - Can't communicate with monitor via HDMI

Hi, I have recently purchased a Toshiba Satellite S50-B-15U and I'm trying to connect it to my 3 year old AOC monitor
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the monitor. The graphics card in the Toshiba is a HD 4600 with a version 10.18.10.4061 driver.
Someone on another forum suggested that an older version of driver (9.18.10.3165) would cure the problem but when I try and install this on the laptop it keeps saying I have the latest driver and it will not let me change to the older version.
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Go to Solution.

Satellite S50-B-15U (PSPRBE-02V051EN)
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If you're really stuck, try out an adapter.
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MacBook Air no longer connecting to monitor via HDMI after recent update.

Hi all,
My MacBook air typically has no issues connecting to my external ASUS monitor via Thunderbol-HDMI port. However, after the recent Mavericks OSX update that was pushed a couple days ago, my monitor says that there is no signal. My MacBook air screen flickers slightly once connected (typical behavior, as it begins to mirror the screen on a scaled resolution shortly there after) but then nothing happens.
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Welcome to Apple Discussions
Try System Preferences->Energy Saver:Automatic graphics switching (Deselect the checkbox).
If that doesn't work you might try changing the resolution and refresh rate for the monitor in System Preferences->Displays, or downloading an app called SwitchResX (shareware) and lowered the resolution just slightly .
One other solution if possible - restore to time before update from backup.
Added restore from backup advice
Message was edited by: themachead

How to get new Macbook Pro Retina (late 2013) to detect external monitor via HDMI?

Hi everyone, this is my first Mac and for the most part it's been really, really wonderful.
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The Macbook Pro Retina (late 2013) has the standard Intel Iris from the Haswell chips, as well as Nvidia GT 750M, the latter which I don't think has been used yet.
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I will search the forums again. If anyone answers this, thank so much!

Hello there, willr314.
It sounds like you've covered most of the practical steps found in this Knowledge Base article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573#1
No video or no signal, image distortion, "snow," or flickering
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
The article does offer some additional links and recommendations as well:
These articles may offer additional assistance and information about displays and video adapters:
Apple Portables: How to use your computer in closed lid mode with an external display
Apple Cinema Display (30-inch DVI) has 1280 x 800 as the maximum available resolution
Mac Pro (Early 2009), Mac Pro (Mid 2010): Supported display configurations
For assistance with Retina displays, please see Frequently asked questions about using a Retina display.
If you tried all of these steps for your display and the video issues persist, contact Apple technical support or take your Apple computer to the nearest Apple Store or Apple Authorized Service Provider (AASP) for diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).
Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

Second monitor via hdmi causing mdp to sleep

Hi
I have a 27" dell monitor which i have been using for a year on my mac mini (2012) via the display port
I have recently added another monitor and im using the HDMI port for that one (hdmi to dvi lead), both monitors work fine BUT then my 27" dell (in the displayport) will all of a sudden go to sleep and nothing i can do will wake it - i have to actually restart and then everything is ok again (until it happens again)
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hi cable_guy,
Welcome to Lenovo Forums!
Im sorry to hear what happend..
The HDMI will not display right away, you will have to configure the computer to make it work.
I believe you will have to blind crawl to this options.
First is to press the (Windows key plus P) to pull up the menu of external display
Things to consider:
- You should be in the desktop screen and not in the log in page
- Windows 8 and Winodws 7 have a diff interface also your keystroke may differ.
=Winodws 7
=WIndows 8
- Resolution, If you external Screen does not support the current screen resolution and refresh rate it may not work. but this rare to happen.
- One last is that you will not know if the screen will not work and how it should be troublshot because you cannot see thing on both screen.
Regards
Solid Cruver
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Can't see dual monitor via HDMI on Lenovo U310

Hi All.
I try to connect second monitor (NEC MultiSync EA232WMi) via DisplayPort to my Lenovo U310 HDMI port and it didn't work. The only I can see is a black screen on NEC and nothing more. I tried Fn+F10 to select output mode and standard Windows 7 resolution settings.
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Thanks in advance!

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Does the monitor work OK when connected to another HDMI output device?
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Connect Macbook to Sony Bravia HDTV via HDMI?

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I hooked my Sony .Bravia 40" up to my MacBook with no problem. From your description, it sounds like you may also have a bad DVI->HDMI cable. I'm using the stock Apple miniDVI adaptor mated to my DVI->HDMI cable.
I was going to go the route you took and use the VGA port on my Bravia, but thought it might limit me to "side" letterboxes since I thought VGA basically stood for 640x480 or 4X3 format. I'm surprised that you get 1920x1080 from a VGA cable. While your picture may be great, by definition I understand high to low video quality in order is...
HDMI/DVI, Component, s-video, VGA, and lastly, A/V cables.
My DVI->HDMI cable is a cheapie that I think I bought at Frys. This type of cable is probably getting harder to find as most stuff is straight HDMI now. Anyone thinking of getting a new flat screen should strongly remember to get one with at least 3 HDMI ports unless they are into cable switch-a-roo when connecting various devices. The stock devices today are cable/satellite, Blu-Ray/HD-DVD/DVD and one for the old Mac.

Audio & video via HDMI to an external monitor with lid closed.

I would like to run a Macbook Pro Retina (2014) with the lid closed and all video and audio via HDMI routed to an external monitor (Samsung Syncmaster from 2010). Is this possible? When I try this, no sound is transferred to the external monitor and I cannot operate the Macbook Pro with the lid closed. As soon as I close the lid, it cuts the signal to the external screen.
I’ve tried looking for previous posts but they’re about MCP’s connecting via Thunderbolt or DVI. Any ideas?

Seems like there may be two separate questions here. Audio working in either configuration and video from HDMI when lid closed. First, you are doing this with the Mac running off of AC, not battery, right?
Audio:
Is the HCMI cable you are using able to carry the audio? Some cables don't.
The only way I've ever used external displays with lid closed is with the thunder port (or DVI) adapter, not with the HDMI. I see the specs from Apple:
HDMI video output
Support for 1080p resolution at up to 60Hz
Support for 3840-by-2160 resolution at 30Hz
Support for 4096-by-2160 resolution at 24Hz
So have you tried varying the screen res to determine the results? I can find no specs regarding what ports remain operational in clamshell. Like you, I would have assumed all of them.
I suspect only the thunderbolt port would support your desired config -- try a thunderbolt/hdmi adapter.
Finally, clamshell mode doesn't allow the MBP to cool efficiently. Heat kills electronics, so if it's too warm or the fans really kick in, you might want to reconsider this setup.

"No signal" from MBP on LG TV via HDMI

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Hello @ShiningLights,
Welcome to the HP Forums, I hope you enjoy your experience!
I have read your post on how your TV is not able to detect your HDMI connected notebook, and I would be happy to assist you in this matter!
To ensure your system is configured correctly to connect to your TV, I recommend following this document on Connecting a Monitor, Projector or TV (Windows 8). I also suggest trying a different HDMI cord to ensure the issue is not with the cable.
Please re-post with the results of your troubleshooting, and I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

HDTV as monitor via hdmi no signal

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