OS X :: DVI-HDMI Connection To External Display Stopped Working?
Mar 10, 2010
I have a macbook pro from fall of 2007. So far it has worked perfectly and I've used it with an LG full hd LCD for about 1,5 years. I use a regular DVI - HDMI cable.About a month back it suddenly stopped working. The TV just tells me "No signal".I didn't change any settings or anything. The computer still recognizes when something is plugged in as the screen flicks blue and the displays icon in the menu bar lists the TV with correct model and resolution. And if I have spaces turned on it changes from 4 to 8 "screens".
I have tried everything from rebooting the computer to resetting P-RAM.
I got a new cable, no difference. However when I tried the TV with my friends MBP, it worked. So the problem is definetly in my computer, not in the TV or cable.My OS X is Version 10.5.8 Leopard.
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Jun 2, 2014
While watching today apple keynote. At the and i realized that my retina display is totally black. Mirror display through hdmi is ok, apple logo on back side of disply is not lighting.
Info:
MacBook Pro with Retina display
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Jul 1, 2009
I have a 15" unibody MBP bought in Nov '08.
Had been using the Mini Displayport > DVI adapter just fine with both HDTV and Dell monitor, BUT then all output has stopped completely!
No monitor is detected by the laptop (although the display does blink blue, as if it had detected it), tried different cables, different displays, using the Displayport firmware update, speaking to Apple, deleting the com.apple..plist files, etc
Edit: it also doesn't work in XP on Bootcamp
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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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Jul 4, 2012
I'm using the macbook pro 2012 retina. The HDMI out to an external monitor works stopped working recently and only works if I'm connected when rebooting. This might have happened after a software update.
Info:
MacBook Pro (Retina, Mid 2012), Mac OS X (10.7.4)
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Jun 3, 2014
HDMI port on Macbook pro suddenly stopped working. Is it expensive to fix?
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Jan 1, 2010
I have been using both messenger 7.0.2 and the beta version of 8 for some time. I have recently upgraded both to Snow Leopard, and changed my ISP to TPG (Australian ISP). Ever since, when I attempt to connect to messenger (either version) it says the connection failed as I am not connected to the internet. My internet works fine so I am at a loss as to what the problem is.
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Sep 6, 2010
My daughter has a MacBook with OS X 10.4.11. Due to its age & configuration, the OS X can't be updated any further.
Her MacBook is networked through my iMac (OS X 10.6.4) and is setup to print via my printer.
The connection to the printer stopped working, I tried to troubleshoot it, but needed the admin password. She didn't know if she had one so I used the installation disk to change eliminate the need for one. But for some things I'm asked for the keychain password, she doesn't remember if she has one.
According to the keychain help, the keychain password should automatically be the same as the admin or login password. There isn't a login password anymore, and keychain isn't accepting a blank password,so I'm locked out of some functions requiring the keychain.
I created a new keychain, but when online, I get a lot of unverified certificate errors. I try to change them individually to accept them, but I'm asked for the keychain password. If I can access the old keychain, is there a way to copy all of its certificates to the new keychain?
I can't figure out how to change the keychain password for the old keychain as without it, I can't accept certificates even with the new keychain. I'm really stuck.
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May 2, 2008
The ethernet connection has stopped working on my MacBook. It has worked previously but now says no cable is installed. I have looked at the port and no damage is noted. I tried a known good cable from another system to no avail
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Sep 26, 2006
im writin this message usin os x's keyboard viewer so its gonna be short.
i got an 20'' imac with apple bt wireless keyboard [i dont know if its relevant but i got xp installed w/bootcamp],it worked fine untill 2 days ago , it suddenly lost connection with the mac,i tried updatin / replacing batteries / and pairing it,it saying that the connection established with the keyboard but nothing works...
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Oct 12, 2007
Last week, my airport connection suddenly stopped working (and I mean JUST as I was working on it, it started failing). It would connect to the network fine, but it could not communicate with the router through DHCP and even with a static IP, it could not transfer any network data. I put in my brother's working airport card, and it worked, so I ordered a refurbished airport card from ifixit.com. I put that in today, and it is showing the same symptoms of my old card. I don't have my brother's PowerBook to test his card again, so I don't know what to do.
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Dec 3, 2009
I'm trying to share the internet connection on my windows vista partition. Until now it has been fine, but all of a sudden, yesterday, it stopped working. iPhone and mac both show self assigned IPs. I tried resetting and setting up a new ad hoc network and checked settings to make sure internet sharing was enabled, but still the mac and iPhone are not given their own IPs.
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Sep 1, 2014
Have a MacBook Pro. WiFi connection stopped working a couple of days ago. Message is 'No WiFi hardware installed'.
Info:
MacBook Pro, iOS 6.0.1
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Sep 2, 2010
I just purchased a 13" MacBook Pro. When I attempt to use a TV as an external display, I get a flickering blue screen on my MacBook, and absolutely NOTHING on the television. I am using a Moshi adapter that I purchased from the Apple Store. Despite HOURS on the phone with tech support, I can't get this to work. I know neither the adapter nor the cable are defective. Does anyone have a solution?
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Feb 27, 2010
I hooked my Macbook mini-display port up to my new Sony 32" TV and it worked fine for a month or so, but then it stopped working. Now when I plug it in the TV says there is "no signal" and the laptop doesn't detect the display. Nothing happens when I plug it in. I have tried two different HDMI chords, but only one mini display chord.
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Sep 2, 2010
I just got the mini display to hdmi cable for my macbook pro. So far it works with the tv. It displays everything but there is one probably safari doest work.
Airport shows that I am connected but safari doesnt connect.
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Aug 19, 2007
I recently got a PowerMac G4. When I viewed it Everything was working. Upon me hooking it back up I noticed It was not getting any picture. The Monitor was brand new so I did not figure it to be broken I checked the monitor on another computer and it worked great. From what I understand this is a common internal problem on the G4.
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Aug 3, 2010
I have a November 2009 27'' i5 iMac and a 2010 Macbook Pro 15'' i7. After installing the iMac's Target Display Update 1.0 and 10.6.4, I'm no longer able to connect the MBP to my iMac. When I plug in my mini displayport cable, the iMac's screen goes black for a few seconds, then the MBP's screen flashes blue for a second or two, and then back to normal, and finally, the iMac's screen goes blue for 5 seconds or so, and then back to the desktop.
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Jun 25, 2014
I have a Late 2011 MBP, just recently I also go an Xbox and wanted to hook it up to my external display that I have been using for a long time with no issues. I went and bought this: URL....to be able to easily switch between the two inputs. The xbox works fine, however when I view my Macs input the screen flickers a static image very frequently.Â
I know what you're thinking, it's probably an issue with either a cable, or the device. But when I boot into Windows via Bootcamp with the same exact setup, there is no flicker at all. The display is a dell s2440L, the HDMI adapter is a rocket fish.Â
Here are the troubleshooting steps I have tried:Â Resetting PRAM/SMCChanging out HDMI cables on both the Splitter output, and the inputs (I tried 3 different cables on both the inputs, and outputs.)Downgrading OSX to 10.7 (And then went back to 10.9)Lowering the resolution on the monitor (Lower resolutions flicker just as much, if not more.)Resetting the splitter by unplugging the HDMI cord powering it and plugging it back in.and of course, plugging my computer into the splitter input that the Xbox works fine on, as well as taking the xbox one out so the computer is the only input on the splitter.Â
Like I said, the Xbox works fine, and even the computer works fine in Windows, but whenever I boot into OSX my screen flickers with this static. I should add, the display works fine when not connected to the splitter on OSX.
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Jan 8, 2011
I have a WD 2 TB My Book Home Edition external hard drive, I have had it for about a year... it worked fine I had a little over 1 TB of data on the hard drive and after coming home from vacation when I reconnected my hard drive it would not mount. The message was "Hard disk not recognized by this computer" so I properly disconnected the hard drive and replugged it in and reconnected to iMac and still same thing. I have tried everything in the book it feels like and nothing is working, and of course I did not have all the info backup with time machine (I REGRET and beat myself up for not) so I need to recover the data and I am not sure what to do. I did run Data Rescue 3 and it said that there was nothing on the hard drive to recover. Of course I am panicking and I have been told to send it off for Data recovery but that is going to cost up to 2,000 and I just want to make sure that this is my last resort or is it hopeless and should I just seek counseling for all the lost pictures of my kiddos...LOL I did try opening the case and inserting hard drive directly in a hard drive docking station
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May 13, 2009
I installed 10.5.7 yesterday. Immediately after the installation was complete, my Apple bluetooth keyboard stopped working. Went into Bluetooth system settings, and it said that there was no bluetooth hardware found... (it's built into the machine!!)...
Also, every time I start iTunes, it gives some weird error about Adobe Flash player. I'm not at home now so I don't have the exact wording of the error with me, sorry...
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Mar 15, 2012
I've got a 2008 Mac Pro running Snow Leopard, and there seems to be some problems with my USB "system". When I eject an external hard drive, my usb mouse and keyboard will stop working for a short while, sometimes requiring that I unplug and plug them back in. Also, when I try to set my default audio input/output device to my USB interface, it resets every single time I turn the computer on and off. Not sure if these are related, but it seemed relevant.
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Jul 4, 2012
My speakers suddenly stopped working. I've unplugged, rebooted ect & nothing works. I get lots of feedback but no sound & my Imac will not show them as an option in systen preferences.
Info:
iMac, iOS 5.1.1, I think thats my operating system?
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Dec 2, 2010
Brought them out of storage on a very, very careful move and now some don't work which used to days ago.
- 320 GB lacie - works
- 1 TB elements works
- Samsung 2TB works
- 1TB firewire 400 WD was working, right up to tonight, and now it doesn't (not even on the USB connection instead of Fire Wire)
- 1TB WD (used for time machine) stopped working weeks agoGot a message about a device or such plugged into USB was drawing too much power earlier, first time ever
Turned the mac off, disconnected the power, held power button 5 secs and plugged in and restarted, no goodThe working ones seem to work on an unpowered hub but those not working of course don't Have searched the internet, nothing seems to be giving an answer of late for this.
Other issues starting to arise:
- DVD's won't eject from the iMac now
- Internet (Wireless lan connected to iinet DSL wireless router (BOB) drops out a lot and have to run network diagnostic all the time)These are less important, need to fix this HDD issue so I can back up with time machine and install snow leopard then develop my app)
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Apr 29, 2012
External speakers stopped working. Verified speakers operating with Iphone. Checked that speakers plugged in correctly. Tried usual power cycling step. External speakers do not show up in sound preferences.
Info:
iMac
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Jan 29, 2008
today i found that Mail has stopped working for no obvious reason.It wont send or receive emails, but when i check by signing into .mac itself, the messages have arrived and everything appears normal.Mail won't quit either... then every so often a box with the following text appears:'Some actions taken while the account 'enter.mac address here' was offline could not be completed online.Mail has undone actions on some messages so that you can redo the actions while online. Mail has saved other messages in mailbox "on my mac" in "on my mac" so that you can complete the actions while online.Additional information: The connection to the server "mail.mac.com" on port 143 timed out.
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Sep 8, 2014
I bought a MBA 13" last month and now I'm trying to connect an external monitor through a Mini Display Port-to-HDMI adapter and most of the times the display shows a message "No signal detected"...
I've tried all the possible combinations between the MAC and the Monitor but it would seem a random matter.
Info:
MacBook Air (13-inch Mid 2012), Mavericks 10.9.4
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Jun 29, 2009
I have a 15" unibody MBP bought in Nov '08.
Had been using the Mini Displayport > DVI adapter just fine with both HDTV and Dell monitor, BUT then all output has stopped completely!
No monitor is detected by the laptop (although the display does blink blue, as if it had detected it), tried different cables, different displays, using the Displayport firmware update, speaking to Apple, deleting the com.apple..plist files, etc
Edit: it also doesn't work in XP on Bootcamp!!!?
None have worked even a bit!.. Also read lots of forum posts of similar problems, but I can't find a solution that works!
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Apr 23, 2012
I have a 27" iMac and I'm using Samsung SyncMaster SA850 as a second monitor (connected via a display Port cable with a mini Display Port adapter). Everything worked fine until yesterday - the Samsung screen turned black and now it only works with max resolution 1280 x 1024 (native is 2440x1440). I think I upgraded Lion 10.7.2 to 10.7.3 (I don't remember for sure though). When I connect the monitor to an iMac with 10.7.2 everything works fine. And another iMac with 10.7.3 has the same problem as me.
Info:
iMac, Mac OS X (10.7.3)
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Jan 26, 2009
if i buy the mini display port to dvi adapter, could i use it with a dvi to hdmi cable for my monitor. This is because the dvi and vga ports are already taken up.
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