External display sound delay
Hello all - Surprisingly I couldn't find this in searches on the forum, so looking for input. I've got an external monitor hooked up via firewire through an HDV deck. There's the expected sound delay (about 5 frames), but how do I get rid of it? Can I buy a video card to put in the G5 with analog outputs to take care of the transcoding delay? Or is there a setting to delay the audio like in Avid? Thanks!
J
That's a better way to ask my question: How can I get video and audio to follow each other in sync to an external display and have both my computer and external monitor all play in sync?
Right now I'm monitoring audio strictly from computer line out speakers, and I'm monitoring video out through firewire via an HDV deck, so I understand why there is a delay. However, it's unrealistic for me to turn down my computer line out speakers and turn up my external monitor speakers every time I need to play back for clients.
I've tried fuddling with the Playback Controls Frame Offset, but it only delays my video playback on the computer, not the external monitor.
Surely there is a hardware solution for professional editors? A board I can purchase to install in the G5? I could throw a mixer into the mix for quick mute access, but not sure what hardware even to purchase to output from the computer for that. I'm accustomed to Avid hardware handling this, but I don't know where to find FCP hardware recommendations. Is this the right route?
Similar Messages
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Cinema display sound problem after Mavericks update
Since I updated to Mavericks, sound only comes from my laptop speakers, instead of from my LED Cinema display's speakers. And when I look at Sound in Preferences, there is no longer the option to change the sound source. Anyone come across this and know how to fix it? Thanks.
Hey there Kravmafan,
It sounds like you are not getting the sound options you are expecting when using a cinema display. I would suggest using these troubleshooting steps from the following article, named:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
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 resolution
Start 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.
Thank you for using Apple Support Communities.
Cheers,
Sterling -
Yoga 3 pro cant stream video on external display or laptop
Saw a previous post on this, didnt seem like it was fixed. Having real issues with hooking up to an external display, when the web browser (chrome) is extended to the external display, my internet lags hard...i cant even stream a vid on youtube.
I've disabled realtek (fixed cracking speakers) tried a completely new cord set up from micro hdmi to dvi...nothing works. When i drag the browser window back to the laptop screen, it works fine.
Ok, 5 min follow up: it seems im now having the similar issue with streaming video on my laptop screen....sound streams fine, the video seems to shake back and forth very quickly, runs, then shakes again...seems to only happen intermittenltly on the laptop...but display shows real lag and shake.
Solved!
Go to Solution.Have you tried changing the screen resolution on the Yoga to something lower than what it is set on? A 1080i screen has a resolution of 1,920 × 1,080, my Yoga 3 Pro has a default resolution of 3200 x 1800. I have not tried connecting my Y3P to the TV yet, but the conversion could be causing an issue.
Hoov
Microsoft MVP - Consumer Security
SpywareHammer.com -
Audio stops when reconnecting external display [OSX10.10]
When I disconnect and reconnect an external monitor, the audio stops.
Audio appears to continue playing, but there is no sound.
Reproducable steps:
OS: OSX 10.10 Yosemite
Hardware: Macbook Pro 13" Retina Mid 2014, 16Gb RAM
System Information: http://cl.ly/image/0H1p032w0M0w
1. Laptop connected to external display with Display Port cable
2. Headphones connected, music playing
3. Disconnect External display
4. Reconnect External display
5. Music stops playing
Current Workaround:
1. Stop music
2. Unplug headphones
3. Plug headphones back in
4. Resume musicBased on this post, I picked up a Ground-Loop Isolator ($17 at my local Radio Shack), connected it, and (so far) it's working perfectly. Dead silence.
MacBook Pro C2D Mac OS X (10.4.8) -
Can I use External Display on a Window 7 64bit 13" Macbook Pro Early 2010
I have a 23" LED LG Monitor , It has VGA Cable , RCA Cable and HDMI Plug (but no wire). I am asking now if whether I should need a VGA Cable or a RCA Cable or a HDMI cable. I know there's the Apple Mini DVI to VGA Adapter. Should I get that? And does window 7 64bit professional bootcamp support any external display? If not , is there another way to get it working.
You should be able to hook it right up just like if it was a "normal" Windows Laptop.
Windows would be the one to set it up with. Make sure you've updated Boot Camp.
You probably should use an "Apple Mini Display" port -to- HDMI adapter as that should give you more display options, etc. (I'm not sure how high the 13" can go on resolutions, HDMI or VGA may not matter?)
You MAY have to use a separate sound cable between the laptop and monitor as some HDMI -to- (whatever) adapters don't carry the sound signal via an "adapter".
The next choice would be a Mini Display port to VGA adapter.
You may want to also ask this question in the "Computing Hardware/MacBook Pro" area as they may have more info?
Hope this helps... -
Imac - external display stopped working
Hi All,
My imac has developed a problem overnight. I usually have the imac connected to an external display via the mini-DVI connection and everything worked fine. (to DVI --> HDMI --> Pioneer Plasma).
However today the imac could not be awoken from sleep. Restarting gets to the desktop screen but then goes gray screen. After much troubleshooting, I have isolated the problem to the mini DVI port. The computer will not complete booting up if the mini dvi port is connected. Just in case it was a problem with the mini-dvi to dvi adaptor, I tested it with a mini dvi to vga adaptor. Exactly the same problem with the booting sequence (gray screen as it gets to the desktop image stage). Without the mini DVI port in use, the imac boots up fine.
Could somebody please give me some suggestions re any further troubleshooting procedures I could try to fix the problem, or does it sound like a videocard hardware problem? Thanks for any thoughts.Welcome to Apple Support Communities
Try doing a Parameter RAM reset - hold down command/option/p/r keys at start up and wait for three chimes before releasing the keys. -
Macbook Pro, how to reset invalid external display resolution?
Hi there. I have a question about the external display configuration.
I recently connected my 2011 Macbook Pro 13" (10.8.2 Mountain Lion) to an external HD-TV using Thunderbolt to VGA adapter. After connecting the TV had 1920x1200 resolution which made the text and everything look very tiny. So I thought I'd lower the resolution a bit. But then I messed up and accidentally changed the resolution and refresh rate for the external display to one that wasn't supported. So the TV went black and gave an error about an invalid resolution. At the same time, on my Macbook screen I had only the background image and display settings dialog. No mouse cursor, no menu bar, no dock etc. So I couldn't do anything.
I disconnected the Thunderbolt adapter and got my Macbook screen back to normal, but when I plugged it in again, the same thing happened. Invalid resolution on TV, just background image and display settings on Macbook screen.
Now, this was just before I was going to give a presentation and it resulted in a very awkward situation with me franticly re-plugging the Thunderbolt adapter and looking just completely clueless In the end I had to borrow my colleague's laptop.
So my question is: when this happens, is there a way I can reset / clear the external display settings back to defaults? They are obviously saved somewhere since replugging the Thunderbolt adapter didn't give me back my original resolution.A PRAM reset should solve that:
From the article linked above:
Your Mac stores certain settings in a special memory area even if it is turned off. On Intel-based Macs, this is stored in memory known as NVRAM; on PowerPC-based Macs, this is stored in memory known as PRAM.
Information stored in NVRAM / PRAM includes:
Speaker volume
Screen resolution
Startup disk selection
Recent kernel panic information, if any
To reset your PRAM:
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys. -
Native resolution does not fill entire external display
I've got one of the original MacBook Pros with the Mobility Radeon X1600 hooked up to a Samsung P2350G display (it's a 23" LCD panel.) The native resolution on the display is 1920x1080.
The display has inputs for both VGA and DVI. The DVI port however is used by a desktop PC already, so I use a DVI to VGA adapter on the MacBook Pro, and use the laptop panel as a secondary display.
The problem is that when I set the external display to its native resolution, I get vertical letterboxing and some flickering along the edges of the image. It does not horizontally fill the whole display as it should. I have tried the same adapter on the PC and it worked fine (though with rather spotty image quality.)
Resolutions that are lower than 1920x1080 work fine and fill the whole display properly. I'm not exactly sure what the issue is. The laptop is only semipermanently attached to the large display so I can live with a reduced image quality there, but the flickering, slightly distorted image is just not acceptable right now.Sounds like it might be a sync issue. Have you tried powering the monitor off and then back on with the MBP connected to it? How about just temporarily disconnecting the DVI cable from the desktop PC and using that to plug into the MBP.
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I got the following message after the crash, it happens a few times a day, my system is the base with 16gb ram late 2013 15" macbook pro retina. it only happens when i am connected to an external display, I do have a converter from vga to displayport. also, i run 4 different browsers in incognito mode as i do web testing and also have about 30 tabs open and excel and a few other apps open, not sure if this is what makes it happen or if it is the external display? it is under warranty, so if you see anything below that may relate to the hardware i can bring it in and get it fixed.
Anonymous UUID: AA4AEC5A-B8ED-31D9-CF66-7F2AC3593105
Wed May 28 09:37:14 2014
panic(cpu 4 caller 0xffffff800acdbf5e): Kernel trap at 0xffffff800ac93f39, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000030, CR3: 0x0000000007f08013, CR4: 0x00000000001606e0
RAX: 0x0000000000000000, RBX: 0x0000000000000000, RCX: 0x0000000000023000, RDX: 0x0000000000000023
RSP: 0xffffff81f8fe39d0, RBP: 0xffffff81f8fe3a10, RSI: 0x0000000000000040, RDI: 0x0000000000146d55
R8: 0xffffff81f8fe3a68, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000000206
R12: 0xffffff8030309920, R13: 0x0000000000000003, R14: 0x0000000000000000, R15: 0x0000000000000004
RFL: 0x0000000000010282, RIP: 0xffffff800ac93f39, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000030, Error code: 0x0000000000000000, Fault CPU: 0x4
Backtrace (CPU 4), Frame : Return Address
0xffffff81f8fe3660 : 0xffffff800ac22fa9
0xffffff81f8fe36e0 : 0xffffff800acdbf5e
0xffffff81f8fe38b0 : 0xffffff800acf3456
0xffffff81f8fe38d0 : 0xffffff800ac93f39
0xffffff81f8fe3a10 : 0xffffff800acafdfe
0xffffff81f8fe3a50 : 0xffffff800b0bb851
0xffffff81f8fe3a90 : 0xffffff7f8c6e608d
0xffffff81f8fe3af0 : 0xffffff7f8c70e24c
0xffffff81f8fe3b30 : 0xffffff7f8c715fb2
0xffffff81f8fe3b70 : 0xffffff7f8c715ddc
0xffffff81f8fe3b90 : 0xffffff800b0cff0d
0xffffff81f8fe3bf0 : 0xffffff800b0cdabf
0xffffff81f8fe3d40 : 0xffffff800acb66a8
0xffffff81f8fe3e50 : 0xffffff800ac26bf1
0xffffff81f8fe3e80 : 0xffffff800ac139f5
0xffffff81f8fe3ef0 : 0xffffff800ac1e043
0xffffff81f8fe3f70 : 0xffffff800acc989d
0xffffff81f8fe3fb0 : 0xffffff800acf3c76
Kernel Extensions in backtrace:
com.apple.iokit.IOAcceleratorFamily2(98.20)[990E3F01-63C7-301C-83B2-40F786CA8F2 6]@0xffffff7f8c6e4000->0xffffff7f8c748fff
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f8b2be000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f8bac1000
BSD process name corresponding to current thread: UserEventAgent
Mac OS version:
13D65
Kernel version:
Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64
Kernel UUID: ADD73AE6-88B0-32FB-A8BB-4F7C8BE4092E
Kernel slide: 0x000000000aa00000
Kernel text base: 0xffffff800ac00000
System model name: MacBookPro11,2 (Mac-3CBD00234E554E41)
System uptime in nanoseconds: 603272572446
last loaded kext at 245583784123: com.apple.filesystems.msdosfs 1.9 (addr 0xffffff7f8cc49000, size 65536)
last unloaded kext at 427763147270: com.apple.filesystems.msdosfs 1.9 (addr 0xffffff7f8cc49000, size 57344)
loaded kexts:
com.apple.filesystems.autofs 3.0
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.driver.AppleGraphicsDevicePolicy 3.5.26
com.apple.driver.AppleHDA 2.6.1f2
com.apple.iokit.IOBluetoothSerialManager 4.2.4f1
com.apple.driver.AGPM 100.14.15
com.apple.driver.ApplePlatformEnabler 2.0.9d1
com.apple.driver.X86PlatformShim 1.0.0
com.apple.driver.AppleIntelHD5000Graphics 8.2.6
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleCameraInterface 4.26.0
com.apple.driver.AppleIntelFramebufferAzul 8.2.6
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleBacklight 170.3.5
com.apple.driver.AppleMCCSControl 1.1.12
com.apple.driver.AppleUSBTCButtons 240.2
com.apple.driver.AppleUSBTCKeyboard 240.2
com.apple.driver.AppleUSBCardReader 3.4.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.AppleUSBHub 666.4.0
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.5.1
com.apple.driver.AppleAHCIPort 3.0.0
com.apple.driver.AirPort.Brcm4360 831.21.63
com.apple.driver.AppleUSBXHCI 677.4.0
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.kext.triggers 1.0
com.apple.driver.DspFuncLib 2.6.1f2
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.7.0d11
com.apple.AppleGraphicsDeviceControl 3.5.26
com.apple.iokit.IOAcceleratorFamily2 98.20
com.apple.driver.AppleHDAController 2.6.1f2
com.apple.iokit.IOHDAFamily 2.6.1f2
com.apple.iokit.IOBluetoothFamily 4.2.4f1
com.apple.driver.AppleSMC 3.1.8
com.apple.driver.AppleGraphicsControl 3.5.26
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.AppleSMBusController 1.0.11d1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.driver.AppleUSBMultitouch 240.9
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.6
com.apple.iokit.IOUSBMassStorageClass 3.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.2.7
com.apple.iokit.IO80211Family 630.35
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOUSBFamily 677.4.0
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1
Model: MacBookPro11,2, BootROM MBP112.0138.B07, 4 processors, Intel Core i7, 2 GHz, 16 GB, SMC 2.18f10
Graphics: Intel Iris Pro, Intel Iris Pro, Built-In
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533641465238412D50422020
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533641465238412D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x134), Broadcom BCM43xx 1.0 (6.30.223.154.63)
Bluetooth: Version 4.2.4f1 13674, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0256F, 251 GB
USB Device: Internal Memory Card Reader
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB Receiver
Thunderbolt Bus: MacBook Pro, Apple Inc., 17.1Hey SreeHarsha Vardhan,
Thanks for using Apple Support Communities.
Sounds like you are having trouble with the screen on your Macbook. If you are not getting anything on the screen, take a look at this article.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Have a nice day,
Mario -
Mac OS 10.4.3 Sleep, Powerbook G4, Airport, External Display Problems
I am running Mac OS 10.4.3 on my G4 Powerbook, system spec as follows
Machine Model: PowerBook5,6
CPU Type: PowerPC G4 (1.2)
Number Of CPUs: 1
CPU Speed: 1.67 GHz
L2 Cache (per CPU): 512 KB
Memory: 1 GB
Bus Speed: 167 MHz
Boot ROM Version: 4.9.1f1
Serial Number: XXXXXXXXXX
Sudden Motion Sensor:
State: Enabled
Version: 1.0
When the Powerbook is woken from sleep mode the airport crashes when using an external display. I have no idea why this is, but it seems from other threads, that the external display and airport are closely tied together, and I have also read that there are others who are experiencing some problems with the Airport. When this happens, I have to hard boot the machine as I can't forcequit or shut down the system from the menubar (this crashes too)
I have the following installed for my airport
2005-07-27 22:23:42 +1000: Installed "AirPort" (4.2
2005-11-12 12:00:12 +1100: Installed "AirPort Update 2005-001" (1.0)
Wireless Card Type: AirPort Extreme
Wireless Card Locale: Worldwide
Wireless Card Firmware Version: 404.2 (3.90.34.0.p16)
I am using an Apple 23" Cinema HD Display with the Apple ADC-DVI converter(previous model)
Can anyone help me with this problem?
Thanks
LucasKI don't think the DVD is damaged since it worked fine on my old G4 desktop.
The reason I'm trying to reinstall OS 10.4 is because I have received the computer from a family member with all his files and data in it. I want to get rid of it all and start from scratch for my personal use - if possible. If not, I could settle for less.
I want to explain few issues if that helps. I first tried installing Mac OS 10.3 to my Powerbook running Mac OS 10.4.3. I put OS 10.3 CD, started computer with C key held down, and all that came up was gray screen with 1 inch black line to the left of the Apple logo, and remained there - never making it to the blue screen. I shut of the computer, took the Mac OS 10.3 out of the Powerbook, restarted without the CD, and the computer was back to the desktop.
Then I tried installing 10.4, which goes past the gray screen, and gets stuck in the blue screen. I ejected the 10.4 DVD, and computer was back to normal (to the desktop)
It sounds like you inserted the wrong or a damaged DVD and neither the installation nor erasure took place. In that case, let's get started again on the right foot.
Tell me why you want to erase your hard drive? Were you experiencing some technical issue, and if so what? Let's troubleshoot that situation with the least harmful method. -
Connecting MacBook Pro to external display
Hi,
I have an external display which has dvi & displayport outputs. I currently connect it to my desktop using the displayport however my MacBook Pro (late 13) only has the thunderbolt / mini displayport & HDMI. Bearing in mind that my monitor is 2560 x 1440, what would be the best way to connect my MacBook to it?
Thanks in advance,
-JamesIt sounds like you're already using the best way. The Thunderbolt port is also a Mini DisplayPort, so you're connecting it DisplayPort to DisplayPort. The reason that is the best way is most other cables, including HDMI in my experience, will not reach the 2560x1440 resolution. (HDMI will probably drive that monitor at 1080p, or only 1920x1080.)
If DVI were to be used, it would have to be the expensive Dual-Link DVI because regular old Single Link DVI isn't capable of 2560x1440. It's a good thing the MacBook has Mini DisplayPort on it instead of DVI (like the older Apple laptops did) because DisplayPort cables are far cheaper than Dual-Link DVI adapters.
You can't do better than the connection you're already using. -
MBP Retina shows wrong resolution on external display since 10.8.4
I have a MBP retina and I'm using it with an external display, Dell U2711, connected via a Mini-DP to DP cable. It all worked amazingly well until 10.8.4 came out. Now, when I connect the display, it no longer shows the correct 2560 X 1440 resolution, but shows 1080p. The displays preferences pane does not allow going over 1080p. It does recognize the display model, though.
It started with one port. The machine has two TB ports, so one of them worked fine and the other didn't (the one closer to the user was acting up). Then it degraded further to the second port. Now, if I plug and unplug several times and fiddle with the displays control panels, I might just get it right eventually. It takes some time, but eventually the machine gets it right. At least that's what I've been experiencing in the last few days.
I don't think it's a hardware issue. It's possible that my cable is at fault, but I seriously doubt that. I'm wondering if anyone else got the same problem, just checking before I go and splurge on a new cable (these cables are not easy to find).
Thanks,
ZThis worked for me:
Step 1: Delete system windowserver preferences
In the Finder, from the menu bar, select "Go -> Go to Folder..."
Enter: /Library/Preferences/
Delete the file called com.apple.windowserver.plist
Step 2: Delete user windowserver preferences
In the Finder, from the menu bar, select "Go -> Go to Folder..."
Enter: ~/Library/Preferences/ByHost/
Delete all files that start with com.apple.windowserver (On my rMBP, there was one file called com.apple.windowserver.12AFB147-95D6-5C70-8F62-C1E4F2BE81BE)
Step 3: Reset the PRAM (These instructions are fromhttp://support.apple.com/kb/HT1379)
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys. -
Not detecting external display after waking up MBP from sleep mode
I am a recent owner of a MBP and enjoying it. However, one problem that I can't seem to find a solution to is the external display problem after sleep mode.
When I first boot up the Mac and plug in my Dell external monitor via the mini adapter, there is no problem with detection or display. However, every time I put the MBP in sleep mode and then wake it up again, the external monitor does not "wake" up and my MBP only displays my normal screen on the Mac.
I tried to 'Detect Displays' to no avail and the only solution is unplugging the mini connection and plugging it back into the MBP for the MBP to re-detect the external monitor.
Although this is a quick fix in itself, I do not want to wear out the mini port by doing this every timeI come out of sleep mode. Any solutions so that the external monitor will detect the MBP waking up from sleep and display properly? Thanks!And same problem here.
Using a MBP 2.66 i7 with a Dell 3008WFP that's connected to the MBP through DisplayPort. It works some of the time but once in a while (only been using the new MBP for a couple of days now) the monitor won't come out of sleep mode. Turning it off/on causes OS X to completely ignore the monitor. I was able to get this setup to work again by pressing 'Detect Displays' in the System Preferences pane but most of the times that doesn't help. The only sure way to get the monitor working again is by booting into Windows through Bootcamp, Windows is able to use the monitor, if I reboot after that OS X sees the monitor again.
Also saw a magenta line/stripe on the left side of my monitor and the monitor sometimes makes a buzzing sound when connected to the MBP through DisplayPort. That's what you get by using bleeding edge tech I guess :\ Only alternative is buying the mini-DP to dual-DVI connector but paying $99 just to be able to use an external monitor is rather insane. Besides that lots of users are having problems with this adapter. -
External display only works with Macbook open?
I have an Acer AL2623W which works fine as an additional or main screen, but a second after you close the laptop the screen goes blank and it shows an 'input not supported' error. The Macbook stays on, it just doesn't drive the monitor alone. Re-open the Macbook and both work normally!
Hello Siôn Dafydd,
Welcome to the Apple Support Communities!
I understand that you are using an external display with your MacBook Pro and when you close the display on your MacBook Pro, the second display turns off. It sounds as though your MacBook Pro may not be connected to power while using with display closed. Please read over the attached article for information on using a second display in closed-clamshell mode.
How to use your Mac notebook computer in closed-clamshell (display closed) mode with an external display - Apple Support
Have a great day,
Joe -
2nd External Display Failing After Yosemite Upgrade
I have a late 2009 iMac 27 (3.06) that ran perfectly fine with TWO external displays (both HP Pavilon 27 xi's). Upgraded yesterday to Yosemite and now 3rd monitor (2nd external) fails to find a source feed. Any advice out there? (#1 external monitor is connected via direct mini DVI to HDMI via a Rocketfish adapter; works perfect; 2nd external monitor is connected via a USB to CableMatters HDMI to DVI adapter to back of HP monitor - worked perfectly for months until last nite; (HDMI to HDMI never worked). Advice? Thanks.
I have used an Acer S230Hl on three Makbook Pros via the VGA wire and a thunderbolt adapter. No problems at all with 10.6, 10.7. Worked perfectly.
With 10.8 the display would not wake up from sleep, most of the time. I found an annoying work around that helped maybe 70-80% of the time: unplug the VGA+adapter monitor feed, and then go to system preferences>>displays>>Color>>open the S230HL profile and then simply plug the monitor back in. I also delayed the sleep feature for 2 hours to prevent the problem, but it happens most of the tiem when I close the lid or put the machine to sleep manually.
Now with Maverick (10.9), even this elaborate this trick does not work. Why the loss in compatability Apple? I've called applecare twice and the techs have not been able to help--and now are not responding or calling me back. Having to reboot my mac 3-4x a day is a major problem. Anyone have ideas for me?
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