Crazy crazy crazy! Airport loses internet when second monitor attached!

Can this really be happening? I decided to try using a second monitor attaching via a mini dvi -dvi converter. Several attempts to get it recognised by the iMac without any success. Scoured the internet groups to see that very many (and I mean very many) others had this problem.
Solved it by swapping my dvi-I lead for a dvi-D lead. The difference is that the DVI-I lead has fewer pins than the DVI-D lead and the iMac mini dvi socked supplies a DVI-D signal. Phew!
So--pleased with myself at surmounting this I fired up Final Cut Pro, dragged the canvas window to the second monitor and had to play around with the resolution setting to get a stable playing of the timeline.
Decided to go on online and see if I was alone on this.
NO INTERNET CONNECTION!!!
30 mins later decided to unplug the second monitor (Philips 200) and got back my inet connection.
Tried the routine again and sure enough each time the second monitor was connected I lost the Airport connection!
Is it possible that the proximity of the second monitor fouls the wireless signal?
Or what?

Kaybee31 wrote:
So far no one has either claimed the same problem or offered a possible explanation.
As I said this loss of internet connection when 2nd monitor is connected is unbelievably odd.
It sounds like another case of EMI (Electromagnetic interference). I believe this is at the root of all these weird Airport or wireless problems. Interestingly enough many of these anomalies are exhibited on the newer generation Macs. Different materials were used, shielding could have been compromised either for cost cutting or by design error. Regardless I'm sure Apple is aware, unfortunately those who purchased these machines may be in the worse case, left with hard wiring for reliable internet and or network connections.......sorry.....

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Airport loses internet connection more often now. Have to reboot. Its about 3-4 years old now. Is there something I can do?

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If your problem is due to interference, you might be able to improve things by changing the channel. An AirPort base station that old is probably an 802.11b/g model, which suggests that the best choices for channel are 1, 6, and 11.

Lose internet when time machine starts backup

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Me too!
It used to work just fine, but ever since I upgraded to snow leopard, I was having these intermittent internet outages, and it was driving me crazy. I finally realized it was happening every time Time Machine would start up. I turned Time Machine off, and now my internet works just fine. But this is obviously not an ideal solution. I'm glad to see I'm not alone.
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I lose internet when I disconnect Vonage

Hello all!
I recently discontinued Vonage VOIP. The setup was initially cable modem > vonage box > airport router. I have four mac set up on the airport network.
When I remove the Vonage box and connect the Airport Extreme directly to the modem, I lose the internet. I still have internet if I connect the modem directly to my mac, and the computers on the network still speak to each other through airport, but there is no internet.
If I put the vonage box back into the setup, the internet reappears and everyone can surf again.
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Your AirPort Extreme router must not be configured correctly. It should be set to obtain a WAN IP address automatically and serve up DHCP on the local network.
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AE CC loses connection with second monitor and audio mixer (BLACKMAGIC) when switching to desktop

specifications:
Mac OsX 10.7.5
AE cc (part of creative cloud, up-to-date) NOT TRIAL VERSION
software for connecting monitor and adui mix panel: Blackmagic Desktop Video 10.0
second monitor: Sony Trimaster EL PVM 2541
audio mix panel: Behringer Xenyx x1204USB audio mixer
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I added two screenshots to clarify.
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Cheers,
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When this happens, open Activity Monitor. Is Adobe QT32 Server running? That is required for QuickTime video preview. If it is not running, this is the troubleshooting you want to do:
http://blogs.adobe.com/aftereffects/2011/02/troubleshooting-quicktime-errors-with-after-ef fects.html
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http://bit.ly/AE_video_preview

No audio when with second monitor attached and using Extend, Duplicate,or Second Screen Only modes

When I attached a second monitor via HDMI cable and try to use Duplicate, Extend, or Second Screen only display modes, I can get the video to display and run but I get no audio unless I set the notebook display settings to P/C Only mode. I really want to use the second screen for PowerPoint/Presenter View and play a embedded video (along with the sound). Even if I try to play a YouTube video I can only get audio when in P/C Screen Only mode. Any assistance would be greatly appreciated. Thank you.
This question was solved.
View Solution.

Hi,
Please disable HDMI sound to force audio back to the laptop or use different conection such as VGA or DVI. To diable HDMI sound, please right click speaker icon > playback devices > right click and disable HDMI sound.
Regards.
BH
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Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

MB 13 aluminum with XP Pro, computer locks with second monitor attached

I have a new macbook 13 unibody with windows XP pro, SP 3 installed. When i use an external monitor in dualview, the computer hard locks after the computer is left idle for a while - I think when power management tells the screen to shut off. The computer works fine without a second monitor in use. Using the bootcamp version of the video driver (177). Any suggestions?

There is a possibility that all you need to do is go into the display properties of the HP and have it look for the adapter.
First the model number of the HP and then the Windows version that is installed, please.
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Going CRAZY! Lose Internet Connection Have to Restart to Get Back.

PLEASE HELP ME!
I have had my system for about 4 months now:
MSI K8N Neo4 Platinum
AMD 64 3200+
1 GB Corsair Extreme RAM
1 36 GB Raptor
That should be enough comp info as I am not sure that it is related to my problem anyways, but I know how technical forums are, everyone always wants to know your system. OK, here is the problem:
I start my compute, then I can connect to the internet without a problem. I can surf and be fine, i can IM and download torrents, everything is fine. Now let's say as an example that I decide to go out. I am not the type to turn off my system whenever I leave, so I will leave it on. When I come back after 4 or more hours (Im not sure of the exact amount of time) my connection is still up, but I cannot surf the internet. Here is the catch, if I have a freind on in Trillian, I can still talk to him, i Just can't surf the internet. My BitLord is still downloading even, just no connection to any webpages. I have IE and Firefox, and I cannot surf through either of them.
PLEASE HELP ME!, if more info is needed I will provide.
Thank you,

Just my two cents on the subject.
Torrents you say? that makes a lot of connections. It is not unknown that it can bog down a router, so that it can not handle any new connections. Connections that you already have made may continue to work. Some routers can not handle it at all, and just shuts down all traffic.
I struggled with such an issue last summer. It took me the better part of the summer, working all day, to find the cause (I had no clue to what it was, so had to test everything from scratch). Solution: Try to set your max global connections, or max connections per torrent to less. Also make sure your upload speed is not more than 70% of your total upload bandwidth, since that can also affect the connection the same manner.

MacBook loses internet when it sleeps

I'm trying to help a friend with a MacBook problem. I've tried some things suggested in other posts (restarting router, repair permissions, etc.) with no luck. Two iPhones and my MacBook Air connect to the internet just fine. Whenever this MacBook wakes from sleep, Safari says it is not connected to the Internet. I click on Network Diagnostics button (on the Safari Error Page) and go thru the process, just clicking "continue" at each page ... at the end it says the connection is fine, and it is. The internet is then available just fine until the MacBook goes to sleep again, then it loses the connection and we have to go through the diagnostics again. The setup is an AT&T 2-Wire Router which connects to the Internet and creates the wireless network. I should also mention the Airport Express which he uses for Airtunes also stopped working (won't connect to the wireless network). The MacBook is running 10.5.8. BTW, this started happening after the hard drive was recently replaced by Apple at the local Apple store. Nothing else has changed.

This any help?
http://discussions.apple.com/thread.jspa?threadID=1305756
The AE probably just needs to be reset back to factory settings (you know, complete reset, where its name becomes "Apple Network ------" and then add it back into the network - fairly simple process.
Message was edited by: myhighway

WRT110 loses connection when second laptop connects

One laptop can be connected to the router at a time and have absolutely no problems. The problems occur when one laptop is already connected to the router and another one tries to connect to the router as well. When this happens the router completely loses it's connection to the internet. The only way I have found to fix this is to unplug and restart the router, which I shouldn't have to do every single time we want to use the internet. Sometimes it takes restarting it a couple times for it to work. Does anyone have any idea why this happens or what I can do to fix it?
Solved!
Go to Solution.

I had this issue for a long long time. The one thing that I have found to help combat this issue is to make sure that if you are using Vista that IPv6 is off. For some reason when either my roommates desktop, laptop or my laptop has this one it will crash the network. To do this in Vista
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3. Click Manage Network Connections
4. Right click on your Wireless or Hardwire connection however you are connecting to the router and go to Properties
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6. Hit ok.
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Initally it may crash the network. Allow the network 5 minutes to attempt to come back up on its own. If this does not work then go ahead and unplug and replug in the router. After the first crash for me it did not happen again.
Hopefully this will help with some of your problems. This is the only thing that I could find to combat the issues that you are describing. With this off we are able to run my laptop, his laptop, his desktop, an xbox360, and a blue-ray player on the network no problem. Good luck and if you have any questions please ask!
Message Edited by bigguy_132 on 01-30-2009 11:09 AM

Lose internet when plugging into switch

I am perplexed why I can create a wireless network with my airport extreme and have great internet connectivity through my cable company, but when I plug the airport into a switch to distribute the internet through out my office the internet immediately starts slowing down and eventually completely goes away. Unplug extreme from switch and the internet comes back for wireless clients. Problem started about a month ago. I figured switches were going bad so I replaced every switch in the office. Did not solve problem. Thought maybe airport extreme was going bad so I replaced it with latest airport extreme (cube). Problem still exists. Nothing has changed in my network configuration in past two years. No other services that use the network is effected, just internet connectivity. I was quite ugly with my internet provider thinking it was a service issue until on a whim I unplugged extreme from switch and my iPad, iPhone, and macbook pro were able to connect to the internet wirelessly instantly. Plug it back into the switch and internet connectivity for wireless and wired goes away.
Any suggestions are greatly appreciated.

That's only one explanation, and an oversimplified one at that. In any event I think your best course of action might still require disassembling your network and adding one piece at a time. Assuming your business is closed for the weekend, now might be your best opportunity.
Short of that, power down all switches, Macs, other devices (though I doubt iPhones, voip phones or printers can contribute to the problem) and the Extreme (no need to reset it). Then, power up the Extreme and one Mac that is connected through a switch. Turn Wi-Fi "off" to ensure Ethernet is its only viable network connection, as well as for troubleshooting simplicity.
It should have no connection until you power up that switch. Do that, and determine if the problem still exists.
Assuming it doesn't, turn its Wi-Fi back "on" and test.
The iPhones and iPads should also be working at this point.
Proceed to the next Mac and test the same way. If it's connected to a different switch, power it on also, then re-check the first Mac.

Lose Internet when Extending Coax from ONT to MI424 Rev. I Router

I need to move my MI424 Rev i router. It's now connected to the ONT with maybe 8 ft of coax and no splitters. I need to add at least 50 ft of RG6 and move it. However, whenever I add more than about 10 ft, I lose the internet connection. Neither the WAN Coax or WAN Ethernet lights will come on. But if I use only a short 6 ft length, it does reconnect and works fine.
Has anybody experienced this? I'm thinking the router must be defective, but maybe I'm missing something. I know I could switch to a CAT5 connection to the ONT, but I'd prefer using the RG6 since I already have spare coax wired in place. I'd also like to be sure there's no problem with the router's coax connection. Thanks a lot.

This sounds odd to me. I think the long length of coax could be the reason. Maybe a signal amplifier or splitter on the line would help?
I have coax coming from the ont going up to my attic to a splitter then there's about 45-50 feet of coax going to my 2nd bedroom where my router is then another 5 feet of coax to the router from the wall outlet and I see no issues at all.
Could be a bad router, but sounds like the signal after so much length is degrading.

Crash when second display attached

I'm using Aperture in this configuration:
Aperture 1.1.2
MacBook Pro 15" (with external monitor)
OS X 10.4.7
Aperture is randomly crashing when the second external display is enabled and Aperture is configured to use it. I can crash Aperture fairly easily, although the crashes are random. If the second display is enabled but not being used by Aperture, I do not have crashes.
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I am not experiencing crashes, but I am noticing interference on the monitors when Aperture is running using 2 monitor mode. As I move from picture to picture, or zoom in or out of pictures, I see small blue and red squares all over the screen ... as if something was writing to the video buffer. The problem does not manifest itself at any time when Aperture is not running.

Unable to view Premiere Elements on my second monitor (attached to my laptop)

No "playback settings" option shows up under project settings (which seems to be the way to resolve this?) Any suggestions would be greatly appreciated. Thanks!

laurelgr
I have just looked at what you described for your Premiere Elements 12 on Windows 7 Professional.
In my case, I used Premiere Elements 12 on Windows 8.1 64 bit laptop.
Independent of Premiere Elements 12, the Control Panel Display offered 4 choices
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Please review and then we can discuss this further.
If the feature that you seek is not there for you in Premiere Elements 12, please remember to get your money back under the Adobe 30 day money back if you purchased the product from Adobe.
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S-Video/Second Monitor

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Hi K T Thank you!
Usually no application at all, except a resident dyndns client and sometimes Mail and Safari.
I haven't Firefox.
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It's not a CPU overload problem, maybe a GPU problem (is there any tool see it?)
If I disconnect the second monitor in the same conditions and restart to play, in the main monitor I don't have any frame drop.
Frame drops happens both in fullscreen than in windowed mode, when second monitor is connected and enabled. But also the entire UI of the systems seems a bit less smooth.
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Crazy crazy crazy! Airport loses internet when second monitor attached!

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