Can't connect to external monitor (possibly after Yosemite update)

I have recently updated my macbook pro to Yosemite. My external monitor (samsung 1080p tv) would connect fine using a hdmi before, but now its unresponsive. I have been into adobe premiere pro CC and been onto preferences > playback > then ticked my monitor but still no luck. I can't remember using the monitor since updating to Yosemite until now so im guessing this is what is the problem as was fine on mavericks. Any ideas? Thanks

Basically I have the same issue. I also suspected a software update (though I am using Mavericks). However, it does play with an older version of Adobe Premiere (CS 6). So I suspect that one of the manny updates to CC broke the connection. It's an important part of my workflow, so let me know if you find out anything. I don't have a solution right now.
Here was my complete post if it helps:
Premiere CC not showing video to monitor
CB

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The Satellite P100 comes with two external monitor port. A VGA and a DVI. Can you have have two external monitor working at the same time? Can you have two external monitor as well as your internal display working at the same time (for a total of 3 display at the same time?
Here is what I have confirm:
Internal display + DVI connector display
OR
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Is it possible to have:
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OR
DVI connector display + VGA connector display + Internal display?

As far as I know this is not possible and you can use either DVI or VGA port.
For signal output can be used only one port for external display.

HT1688 My husband's iphone can't connect to the App store after he updated to ios.7. He updated it yesterday and he has had problems since. He gets a message that the iphone can't connect to the app store and he has internet connection. Please help.

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I would like to use 2 external monitors simultaneously with my clamshell closed. I have external keyboard and mouse but need to know how to and what to buy in order to achieve this.....havent found anything straight forward on apple site, like a vga dual monitor splitter, so am in need of some advice on how to do this please!

Thanks for the reply. Haven't gotten anything as yet. Just that I burned out my older PowerBook using it as a primary screen w/ a secondary 20" monitor. Would be nice if the MacBooks could be used as a CPU only, connect 2 different monitors, and use the LCD screen when portability is needed. But I suppose that is why Apple makes different types of computers. I know I can rig the video SCSI cable to bypass to LCD screen and use the other built-in monitor. But there goes the warentee and any kind of AppleCare... not that I have ever used it, (until a day after it has expired!)
But thanks for the feedback. Your reply is what I expected. Being that I am a mercenary graphic designer and need to be able to work whenever, and where-ever I need to, the MacPro is not my hardware of choice. As well, I don't have $4000 in my budget. But man do those machines rock! Just think of what NASA could have done with one of those in 1969 when we were going to the moon! But now that the U.S. has decided that manned space travel and even scientific space exploration is not worthy of having a budget, the MacPros are religated to creating new episodes of Jersey Shores!
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Can I connect 2 External monitors simultaneously on Toshiba notebook?

Hi,
I am interested to find out which of toshiba laptop's currently on offer do support 2 external monitors simultaneously (one as normal and second as extended dekstop in windows). I am looking for to replace my old configuration of laptop and docking station connected to two external monitors with resolution of 1280x1024.
I was looking on toshiba websita at
Portg R700-15Q
http://uk.computers.toshiba-europe.com/innovation/product/Portege-R700-15Q/1089286/toshibaShop/false/
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http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=SB&os=&category=&moid=2756712& rpn=PA3680U&modelFilter=PA3680U-1PRP&selCategory=2756711&selFamily=116319
and in the troubelshouting part I did found this:
Cannot display information to a
DVD-D and RGB Monitor at the
same time
Check that the cables connecting the monitors are firmly attached on
both ends. Some computer models do not support output to DVI and RGB
monitors simultaneously. Check the documentation for your computer
model.
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Thanks for any help
Ian

Thanks for the reply,
Toshiba Dynadock did not have really good reviews and it is working via USB which would be quite slow for all the traffic needed to show the graphic information for two monitors at 1280x1024.
Rick in here
http://forums.computers.toshiba-europe.com/forums/thread.jspa?messageID=214855&#214855
is talking about about 'm9 ... to display to two external monitors which works well' so I thought must be possible. I know HP, Dell and Lenovo laptop's are able to do it so why not toshiba?

Powerbook G4 15" screen blank, can't connect to external monitor

Hi,
I've had a 15" Powerbook G4 for about 2 years now, but about a year ago, I switched it on and the display was white. I could hear the startup chime, and everything seemed to be working fine underneath, but the screen was just white.
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However, the external monitor just stays blank, as if it isn't connected to the Powerbook.
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hi i did this as posted by yan pb15 i had everything back internal and external monitor it is a wonderful trick!!!
thanks yan pb15
This "last" solution worked for my PB15 osx 10.4.11 (somebody can help you; it is at your own risk!)
1. set in Quartz Debug: a) Quartz 2D extreme disabled; b) Automatic Beam Synchronization
2. turn off PB and unplug everything
3. remove battery
4. remove all memory modules (your 1GB RAM)
5. plug AC power
6. turn on PB ( beeps; white LED blinks)
7. turn off PB
8. reset PMU (my PB model: shiftctrl+altpower)
9. turn off PB
10. unplug AC power
11. install all memory modules
12. install battery
13. plug AC power
14. turn on PB and pray
Good luck.
i had everything back internal and external monitor it is a wonderful trick!!!
thanks yan pb15

Can I connect an external monitor on an HP Touchsmart 520 PC, using an HDMI to USB converter?

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This article will walk you through the process.
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I work on behalf of HP, but my opinions are my own.
Please click the "Thumbs up + button" if I have helped you and click "Accept as Solution" if your problem is solved. If both apply......do both.

How can I connect an external monitor to the new 27 inch iMac?

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This question was solved.
View Solution.

Hi,
All Dell monitors come with CD's for drivers. Your laptop may not know the monitor w/o its driver, it won't install automatically. Please check:
Ringht click a blank space on desktop,
Click Personalize
Click Display
Click Change display settings
Can you see BOTH laptop screen and external monitor in there as shown on the following image:
For testing, I put my Dell monitor is my main display. If I can't see 2 monitor, you need its driver first and then check the cable.
Regards.
BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Can I use any external monitor with HDMI connection

Am I able to connect any external monitor from Dell or Samsung to my Mac Book Pro w/ Retina display (late 2013) via an HDMI connection ?

Yes

Connect two external monitors to mini DP(using a mini DP to VGA adapter) and the VGA out at once

I am trying to connect two external monitors to mini DP(using a mini DP to VGA adapter) and the VGA out at once. Windows recognize both monitors as well. But it dowsn't let me use all three monitors at once(see the below image). In the dropdown, it lists all three monitors. Problem is there are two active displays I can select.

Mavec wrote:
I would like to add a third monitor.
The GPU(s) in your T400 (and most other laptop brands) will support two different displays concurrently. If you want to support more than two different displays concurrently, you will need another GPU external to the T400.
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Cheers,
Bill
I don't work for Lenovo

Can I connect an external video camera to a mac book pro for viewing live video so I don't have to use the little screen on the camera?

Can I connect an external video camera to a mac book pro for viewing live video so I don't have to use the little screen on the camera?

Shadow30 wrote:
Can I connect an external video camera to a mac book pro for viewing live video so I don't have to use the little screen on the camera?
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Message was edited by: EZ Jim
Mac OSX 10.9.4

What is the best solution/product to connect 2 external monitors to MBP ?

Hi!
1. Can I use my MBP 13" (2011 i5) monitor as secondary when I connect an external one?
2. Which solution is the best to connect 2 external monitors to my MBP 13 2011 i5 ?
Thanks!

v470510c05 wrote:
1. Can I use my MBP 13" (2011 i5) monitor as secondary when I connect an external one?
Yes. You can mirror or extend as been so for many years.
2. Which solution is the best to connect 2 external monitors to my MBP 13 2011 i5 ?
None, the graphics card is poor integrated graphics and it can barely drive one external monitor, much less two.
If you wanted two external monitors the machine to get is the Mac Pro.

Hp dv6 1355dx laptop - how do I connect 2 external monitors?

I have a HP dv6 1355dx laptop Entertainment PC. How do I connect 2 external monitors (both have VGA cables) and neither one has HDMI connectors. My laptop has only 1 VGA connector, so I can display my laptop video and 1 of the external monitors.
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Hi,
Docking station or port replicator won't solve the problem because of your internal graphics card. You need something which is similar to the following products:
http://www.matrox.com/graphics/en/products/gxm/
or USB to 2 VGA monitors but very hard to find (normally you can only get 1 VGA and 1 other, not both VGA's).
Regards.
BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Can't connect to external monitor (possibly after Yosemite update)

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