Trying to regain external display/upgrade or downgrade os?

I just got Pearl Flip 8220 2 days ago. I must have goofed when trying to remove things I don't need & I lost the external display. I read posts saying upgrade/downgrade then upgrade os, but I need to know exactly how. In DM I went to app loader and nothing shows that I took off, just the games, etc that I still have on phone. I did check for update, but it says I am up to date. Phone says it is v4.6.0.180. DM says it is v4.6.0.19, so I gues DM updated. I am LOST. Please help.

Nice long story, but the short version would be better. Is this drive now in the external enclosure? If so connect it to one of your computers and try the following:
Extended Hard Drive Preparation
1. Open Disk Utility in your Utilities folder. If you need to reformat your startup volume, then you must boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger or Leopard.)
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Click on the Options button, set the partition scheme to GUID (only required for Intel Macs) then click on the OK button. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the volume(s) mount on the Desktop.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
If the drive is not accessible in Disk Utility or is not visible in Disk Utility then either the drive is dead or your enclosure is dead, or you have a defective cable.

Similar Messages

Problem with resolution of external display

Hi,
I am trying to use external display with my Unibody Aluminium Macbook Pro (NVIDIA GeForce 9400M, 2.26Gh, snow leopard). Cable setting I use is quite complicated as it is: macbook: minidisplay port>hdmi> DVI D : display. Display is LG Flatron W2242T (4:3).
So I hooked everything up and macbook detected display without any problem. The problem arises when it comes to resolution. Maximum resolution I can set (and in fact the only except 800xsomething) is 1152x870 and not only it is to low, but also it does not respect 4:3 ratio so it looks quite bad. So bad, that i cant really work on a setup like that. When I try to change resolution to any other, Display goes black. I tried using some apps, but they dont really work.
What can be the problem here? Is it connection?
I would appreciate any help.

And once you've cut thru the clutter of cables and adapters, remember the max you will be able to push the Flatron is its "native resolution", that happens to be:
Screen Size
22"
Screen Type
TFT LCD
Wide Screen
Yes
Brightness
300cd/m²
Contrast Ratio
8000:1
Viewing Angle
(Horizontal/Vertial)
160/160
Response Time
5ms
Resolution
1680X1050
Supported Colours
16.7M Colours
(data taken from LG's product page)
If you happen to have a late model MBP with the widescreen option, the Mac and the display will be on a 1:1 ratio, both are the same. Else, if you have a regular MBP, the monitor has more resolution than the Mac (1440x900) and distortion will occur if you do video mirroring.

Preview and external displays.

Hey I was wondering if anyone could help me with the following:
1) I'm using Preview to view pdf-files, when I hookup my external display
and make preview display in fullscreen-mode it uses my laptops screen
to do this. Is there a way to force preview to use the external display?
I've already tried setting my external display as the default display and than
it uses this one for fullscreen, but it would be easier for me not to change these settings each time.
2) When in fullscreen-mode Preview blacks out the other display. Is there a way to turn this off so that I'm still able to use the other screen will preview stays in fullscreen?
Thanks in advance!

i've wondered the same thing. for the longest time, when i have my MUCH LARGER display attached to my laptop, i can't seem to find a way to get preview to do full-screen to it.
dragging the window with images (and drawer) to the display before choosing slideshow (fullscreen), it makes no difference.
i'm not expecting there to be a solution. i can only hope that Preview in 10.5 has a preference tab for Slideshow options. It has tabs for other features, why not that one!? its really no difference than presenter mode in keynote or any other program that allows you to select the primary display for certain functions and features. Apple if you read this please add this capability. i also find it frustrating that there is no mention of Preview on Apple's support website for Application support. They have QT, iCal, Font Book, iSync, blah blah blah, but nothing for Preview. I know Preivew is more a component of QT, but it is a stand alone application, so Apple support would be appreciated.
Although i don't care too much about transitions, timing, etc., i can understand that some people would like to be able to control those options. i use Preview to do just that PREVIEW. It would make sense that I should be able to go fullscreen (slideshow) with a set of images in order to PREVIEW them. Having to import to Aperture or iPhoto to have a decent slideshow (fullscreen) mode just isn't good for my workflow.
i'll stop rambling. crossing my fingers.

How do I set MacBook to an external display when the plug and play doesn't recognize it? I am trying to set my Samsung 530 LCD as a monitor but HDMI and VGA cords (and the adaptor for them) doesn't seem to work.

I have tried everything I can find on line but they all claim that the plug and play works, and they don't for me. I tried the mini dvi to HDMI and a HDMI cord and that was not recognized no matter which unit I rebooted first. I found someone who said that my Macbook might be too old for the HDMI technology so I returned the cords and went to the VGA cord and adaptor.
I tried this first with the HDMI setup:
http://support-us.samsung.com/cyber/popup/iframe/pop_troubleshooting_fr.jsp?idx= 167919&modelname=LN40C650L1F&modelcode=&session_id=NDhJrD0DQT0Z8KRsm62yhxJxqnyPy SKhlhpB8vQ6h9Q7R2BZJGzj!-1089109758!1761676444!7501!-1!434477884!1761676348!7501 !-1!1292098185857
Then I tried this with the VGA setup:
http://support-us.samsung.com/cyber/popup/iframe/pop_troubleshooting_fr.jsp?idx= 167901&modelname=LN40C650L1F&modelcode=&session_id=NDhJrD0DQT0Z8KRsm62yhxJxqnyPy SKhlhpB8vQ6h9Q7R2BZJGzj!-1089109758!1761676444!7501!-1!434477884!1761676348!7501 !-1!1292098185857
I contacted Samsung support and they said I needed to set the display settings to external display on the mac. I went to the display settings and moved the icon to my status bar. When I click on search for displays or whatever it says (I'm not at my Mac right now) it does nothing.
What am I missing?

I am using MAC OSx 10.5.8 (9L31a) as my operation system. The TV says "No signal. Check connected device's power, cable connection and source selection." Seems to me that that goes in hand with what the Samsung tech said about the Mac needing to be forces to use the external display. But how do I do that?

Kernel panic when trying to use spotlight with external display attached

Having an issue with my fairly new MacBook Pro (purchased in April). When it's connected to an external display, I will get a kernel panic 100% of the time if I click on the Spotlight icon. The same also happens sometimes when clicking Documents or Downloads in the dock, but that is infrequent. This only happens with an external display attached and I have tried multiple external displays and cables. Following is the kernel panic report. I don't really know how to read it, so if anyone has suggestions they would be much appreciated.
Mon Nov 15 19:13:33 2010
panic(cpu 2 caller 0xa7cbfa): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0x7fc71000 0x0a5480a2, D0, P2/4
Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x5516a188 : 0x21b50c (0x5d42fc 0x5516a1bc 0x223974 0x0)
0x5516a1d8 : 0xa7cbfa (0xc922bc 0xd02940 0xca1424 0x0)
0x5516a278 : 0xb97640 (0x95db004 0x9875004 0x100 0xe3d7a00)
0x5516a2c8 : 0xb8e639 (0x9875004 0x100 0x5516a2f8 0xa6c6d7)
0x5516a2f8 : 0x170d9ce (0x9875004 0x100 0x438004ee 0x1)
0x5516a438 : 0xbb62bd (0x9875004 0x9865004 0x0 0x0)
0x5516a478 : 0xa85e63 (0x9875004 0x9865004 0x0 0x0)
0x5516a518 : 0xa8246f (0x0 0x9 0x0 0x0)
0x5516a6c8 : 0xa844a3 (0x0 0x600d600d 0x702b 0x5516a6f8)
0x5516a798 : 0xd47652 (0xc1d00041 0xbfef0033 0xbfee0034 0x857c)
0x5516a808 : 0xd56e38 (0xa09d000 0xa051d00 0x8 0x1)
0x5516a828 : 0xd7ba20 (0xa051d00 0xb 0x5516a848 0x3)
0x5516a858 : 0xd7c23b (0xa054000 0x1 0x5516a87c 0x0)
0x5516a888 : 0xd5c485 (0xa054000 0x7d3ef080 0x1 0x0)
0x5516a8d8 : 0xd1e68e (0x46559000 0x1 0x0 0x3)
0x5516a948 : 0xd1dd99 (0x46559000 0x1 0x2 0x3)
0x5516a978 : 0xd13ca7 (0x46559000 0x1 0x2 0x4654b000)
0x5516aab8 : 0xd4ccfe (0x4654b000 0x0 0x5516abcc 0x5516abc8)
0x5516ab68 : 0xd0fc93 (0x4654b000 0x0 0x5516abcc 0x5516abc8)
0x5516abe8 : 0x5659b8 (0x4654b000 0x0 0x5516ae3c 0x5516ac74)
0x5516ac38 : 0x566257 (0xd9de20 0x4654b000 0x97edf88 0x1)
0x5516ac88 : 0x566b0b (0x4654b000 0x10 0x5516acd0 0x0)
0x5516ada8 : 0x285bce (0x4654b000 0x10 0x97edf88 0x1)
0x5516be58 : 0x21d8ba (0x97edf60 0xa0d05a0 0x1fd7e8 0x5e43)
0x5516be98 : 0x210a3a (0x97edf00 0x0 0x9d4ba40 0xa0e9b60)
0x5516bef8 : 0x216c9d (0x97edf00 0x0 0x0 0x0)
0x5516bf78 : 0x295156 (0x9245328 0x0 0x0 0x0)
0x5516bfc8 : 0x2a148d (0x9245324 0x7fff 0x10 0x9245324)
Kernel Extensions in backtrace (with dependencies):
com.apple.GeForce(6.2.4)@0xd04000->0xdb9fff
dependency: com.apple.NVDAResman(6.2.4)@0xa16000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0xa09000
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x908000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x9e7000
com.apple.nvidia.nv50hal(6.2.4)@0x15d7000->0x19ebfff
dependency: com.apple.NVDAResman(6.2.4)@0xa16000
com.apple.NVDAResman(6.2.4)@0xa16000->0xd03fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x908000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0xa09000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x9e7000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
10H574
Kernel version:
Darwin Kernel Version 10.5.0: Fri Nov 5 23:20:39 PDT 2010; root:xnu-1504.9.17~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 254626597586
unloaded kexts:
com.apple.driver.AppleUSBUHCI 4.1.5 (addr 0x1454000, size 0x65536) - last unloaded 196223967832
loaded kexts:
com.cisco.nke.ipsec 2.0.1 - last loaded 42574053426
com.parallels.kext.prl_vnic 5.0 9370.589435
com.parallels.kext.prl_netbridge 5.0 9370.589435
com.parallels.kext.prlusbconnect 5.0 9370.589435
com.parallels.kext.prlhidhook 5.0 9370.589435
com.jft.driver.PdaNetDrv 1.0.64
com.parallels.kext.prl_hypervisor 5.0 9370.589435
com.Logitech.Unifying.HID Driver 1.1.0
com.Logitech.Control Center.HID Driver 3.2.0
com.apple.driver.AppleHWSensor 1.9.3d0
com.apple.driver.IOBluetoothSCOAudioDriver 2.3.8f7
com.apple.driver.IOBluetoothBNEPDriver 2.3.8f7
com.apple.driver.AGPM 100.12.19
com.apple.driver.AppleHDA 1.9.9f12
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AudioAUUC 1.13
com.apple.driver.AppleUpstreamUserClient 3.4.5
com.apple.driver.AppleMCCSControl 1.0.17
com.apple.driver.AppleMikeyDriver 1.9.9f12
com.apple.DontSteal_Mac_OSX 7.0.0
com.apple.iokit.CHUDUtils 364
com.apple.iokit.CHUDProf 364
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.AppleIntelHDGraphics 6.2.4
com.apple.driver.AppleIntelHDGraphicsFB 6.2.4
com.apple.kext.AppleSMCLMU 1.5.0d3
com.apple.driver.AppleGraphicsControl 2.8.68
com.apple.GeForce 6.2.4
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.driver.ACPISMCPlatformPlugin 4.5.0d5
com.apple.driver.AppleLPC 1.4.12
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AppleUSBTCButtons 200.3.2
com.apple.driver.AppleUSBCardReader 2.5.8
com.apple.driver.AppleUSBTCKeyboard 200.3.2
com.apple.driver.AppleIRController 303.8
com.apple.iokit.SCSITaskUserClient 2.6.5
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.iokit.IOAHCIBlockStorage 1.6.3
com.apple.driver.AppleUSBHub 4.1.7
com.apple.driver.AppleFWOHCI 4.7.1
com.apple.driver.AirPortBrcm43224 426.36.1
com.apple.iokit.AppleBCM5701Ethernet 2.3.9b6
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleUSBEHCI 4.1.7
com.apple.driver.AppleAHCIPort 2.1.5
com.apple.driver.AppleACPIButtons 1.3.5
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleHPET 1.5
com.apple.driver.AppleSMBIOS 1.6
com.apple.driver.AppleACPIEC 1.3.5
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 105.13.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagement 105.13.0
com.apple.driver.DspFuncLib 1.9.9f12
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.iokit.IOSurface 74.2
com.apple.iokit.IOBluetoothSerialManager 2.3.8f7
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.CHUDKernLib 365
com.apple.iokit.IOAudioFamily 1.7.9fc4
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleHDAController 1.9.9f12
com.apple.iokit.IOHDAFamily 1.9.9f12
com.apple.driver.AppleSMBusController 1.0.8d0
com.apple.iokit.IOFireWireIP 2.0.3
com.apple.iokit.AppleProfileFamily 41.4
com.apple.driver.AppleSMC 3.1.0d3
com.apple.driver.IOPlatformPluginFamily 4.5.0d5
com.apple.driver.AppleSMBusPCI 1.0.8d0
com.apple.nvidia.nv50hal 6.2.4
com.apple.NVDAResman 6.2.4
com.apple.iokit.IONDRVSupport 2.2
com.apple.iokit.IOGraphicsFamily 2.2
com.apple.driver.BroadcomUSBBluetoothHCIController 2.3.8f7
com.apple.driver.AppleUSBBluetoothHCIController 2.3.8f7
com.apple.iokit.IOBluetoothFamily 2.3.8f7
com.apple.iokit.IOSCSIBlockCommandsDevice 2.6.5
com.apple.iokit.IOUSBMassStorageClass 2.6.5
com.apple.driver.AppleUSBMultitouch 206.6
com.apple.iokit.IOUSBHIDDriver 4.1.5
com.apple.driver.AppleUSBMergeNub 4.1.5
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.5
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOAHCISerialATAPI 1.2.5
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.5
com.apple.iokit.IOUSBUserClient 4.1.5
com.apple.iokit.IOFireWireFamily 4.2.6
com.apple.iokit.IO80211Family 312
com.apple.iokit.IONetworkingFamily 1.9
com.apple.iokit.IOUSBFamily 4.1.7
com.apple.iokit.IOAHCIFamily 2.0.4
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOHIDFamily 1.6.5
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 289
com.apple.iokit.IOStorageFamily 1.6.2
com.apple.driver.AppleACPIPlatform 1.3.5
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0

Though it doesn't look like one of them is clearly responsible, it may be due to the presence of one or more of these kernel extensions:
com.cisco.nke.ipsec 2.0.1
com.parallels.kext.prl_vnic 5.0
com.parallels.kext.prl_netbridge 5.0
com.parallels.kext.prlusbconnect 5.0
com.parallels.kext.prlhidhook 5.0
com.jft.driver.PdaNetDrv 1.0.64
com.parallels.kext.prl_hypervisor 5.0
com.Logitech.Unifying.HID Driver 1.1.0
com.Logitech.Control Center.HID Driver 3.2.0
As a first debugging step, try rebooting in safe mode:
http://support.apple.com/kb/ht1455
and see if the panics occur then, though quite frankly it appears it may be an issue with your video card and/or drivers.

Has anyone tried driving two external monitors (3 total displays) on the iMac 2011 through the thunderbolt ports on Windows 7 Bootcamp?

I would love to purchase an iMac 2011 with the Thunderbolt ports, but I need to occasionally boot to Windows 7 Bootcamp.
I imagine this will work in general... but has anyone tried driving two external monitors using the Thunderbolt ports in Windows 7 Bootcamp?
Thanks in advance!
Ralph

Hi,
I am trying to get this working at the moment. both monitors are fine in Lion but I am losing the second monitor in windows. I will update you when I get it working.

Connecting a MacBook to an external display or projector

I have tried to connect my MacBook to a projector and to a TV using the mini-DVI to Video adapter, both with the same poor results. Here's the steps I took:
- Turned on the TV
- Connected the video cable to the TV "video in"
- Connected the video cable to the MacBook with the mini-DVI to vieo adapter
- Opened the MacBook
- Turned it on
The MacBook boots up, the MacBook resolution changes and the video on the TV is distorted, showing essentially three images of the MacBook display. Any attempt to adjust the resolution using system preferences just makes it worse.
Has anyone had success using a MacBook for presentations using either a TV or a projector and, if so, what procedure do you use to connect?

Greetings from Hong Kong-
I have a major presentation to give in a couple of days and have NOT been successful connecting to an external display. I am starting to freak out. Any instructions would be helpful!

How do I connect an external Display to the new MC814XX/A

I can't find a port for an external display in the NEW Imac 27" Mid 2011 (MC814XX/A)... I'm trying to connect my Cintiq to it. How do I work arround this?

You need an adapter cable that plugs into the Thunderbolt port. The Minidisplay port to HDMI or MDP to DVI will work. Then you plug a HDMI cable (or DVI) into that adapter and the TV.
Regards,
Captfred
http://store.apple.com/us/product/H1824ZM/A/Moshi_Mini_DisplayPort_to_HDMI_Adapt er

How do I get my Macbook Pro to detect an external display?

Hi there.
I just bought a new MacBook Pro today.
Everything about it is wonderful, except: When I plug an external display into the Thunderbolt port using a Minidisplay port to VGA adapter, it doesn't send a signal to the external monitor. The screen on my Macbook will go blue for a second, and then the windows freeze. The mouse will be movable for a bit (up to a minute), but nothing is clickable. Strangely, it seems as though it's functioning as if there were a second monitor (I can move the mouse off-screen as though it's going over to another display). But then the spinning rainbow wheel starts and never stops. If I unplug the Minidisplay port to VGA adapter, the Macbook will snap back into professional mode and everything works again.
If I try to boot the computer up with the Minidisplay port to VGA adapter already pluged in, it simply won't boot up (I get a gray screen with an apple and nothing more).
I tried using gfxCardStatus set to "discreet only" and I still have this problem. I tried to run a firmware update, but my comp seems to be entirely up-to-date already (just set it up today).
The monitor and adapter seem to be working fine, and function as an external display when pluged into the Mini-DVI port on my 2009 Macbook running Snow Leopard.
I guess my question is, what's causing this? Is this an adapter problem? Like, do I need a special adapter to use with a Thunderbolt port as opposed to the one I'm using which works when pluged into a Mini-DVI port?
Model Name: MacBook Pro
Model Identifier: MacBookPro9,2
Processor Name: Intel Core i7
Processor Speed: 2.9 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 8 GB
Boot ROM Version: MBP91.00D3.B08

The only thing that I can suggest is trying a different adapter - such as this one from Monoprice.
I don't know if that's the root of your problem, though. Does the external monitor have DVI? You could get a Thunderbolt to DVI adapter from Monoprice - here - and give that a shot.
Clinton

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

Connection to external display does not work under windows bootcamp, with a thunderbolt to vga adapter.

Hello guys, after searching a lot in the forum for an answer to this, I could not find a solution so this is the reason for this post.
I have a Macbook Pro (early 2011 I think) running MacOSX Lion and I have installed Windows 7 64-bit through bootcamp (version 4.0).
Everything works fine except that I cannot connect my external display through my thunderbolt-vga adapter.
The external monitor shows only the boot screen of windows (the one with the windows logo) and then, when I get into the login page it goes blank.
After reading the forum, I have done several things in order to fix this problem such as:
Restarting the macbook with the thunderbolt device connected to it.
Updated to the latest ATI drivers through bootcamp.
Removed the graphics driver and re-install it again.
I have tried to identify the external monitor through windows 'screen resolution' tool (attached photo).
but still no luck.
Does anyone have any idea on what else I could do in order to fix this? By the way, I find it very frustrating that Apple does not have a stable solution to the problem with devices that are connected to the thunderbolt port.
Thank you in advance

and here is the attached screenshot

Problem with T400 and External Display....

I have a new T400 (less than 1 month old) with the shared memory Intel Graphics setup and I cannot get it to work with an external display of any kind.
I've tried 2 LCD panels (one widescreen, and one 4:3), 2 analog monitors, and a video projector without any luck. All of the displays I have tried work fine with my older Lenovo R61.
I've updated to the newest display drivers and tried working with the various settings under Graphics properties in Vista - Single Display (notebook, monitor), Intel Dual Display, Extended Desktop, etc. The best I got was a cloned image on the larger widescreen LCD panel that appeared for about 1 minute and then stopped. I recreated this 4 or 5 times, but the image would not stay on the external display.
Any ideas?
Thanks,

go into bios, check your video output option and whether you selected Internal + VGA, i think... i will check for you on my X60s....
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

External display via Mini DisplayPort to DVI no longer works with MacBook.

I had not used my external monitor in the last several weeks. I believe there have been a few OSX Lion updates since the last time I used the external monitor. I had installed all the updates prior to connecting my external monitor again. However, a few days ago I tried to connect the external monitor and all I get is a "No Signal" message on my external monitor. The Mini DisplayPort to HDMI works on my LCD TV, so I know the MDP works. I have also replaced the MDP-to-DVI cord and the external display still doesn't work.
I connected the external monitor to another computer running Snow Leopard and the external monitor works. So, the external monitor does work.
I have seen a few posts aboout this, but nobody seems to have a solution that works or is directly on point to my issue. I have tried to use all the scenarios for plugging in the external monitor and external monitor power. I tried to reboot the laptop with and withoout the external monitor connected. Same thing with the exteernal monitor plugged in and no power, etc. Nothing works. I have tried to repeatedly turn the external monitor on and off while connected to the MacBook. Again, that doesn't work.
So, I am open to any help someone may have. Here is what I am running:
MacBook, Aluminum 13" Late 2008
OSX 10.7.3
NVIDIA GeForce 9400M

While we all have MacBooks in this forum most of us don’t run Lion. There's a Lion Support Community where everybody has Lion. You should also post this question there to increase your chances of getting an answer. Lion seems to have problems with external monitors. https://discussions.apple.com/community/mac_os/mac_os_x_v10.7_lion

My Macbook Pro (Mid-2012) won't connect to an external display using my MiniDP to VGA Cable.

I'm on a Macbook Pro (Mid-2012) on Mac OS X 10.8.3 (currently downloading the update to 8.4). When I plug in my Mini Displayport to VGA adapter to my Mac, the screen flickers blue for a second and the Display Settings window detects the other monitor and allows me to rearrange the screen, but it does not project anything onto the other monitor. However, I tried connecting an Apple Thunderbolt Monitor to this computer today, and it worked. This wasn't a problem before, as I was able to connect this Mac to other LCD projects before. Furthermore, I don't think it's an issue with the adapter either because it's relatively new. I also tried plugging in the adapter of another Mac (which was working fine) into my Mac, but it didn't work either.
Here's what I've tried:
1. Restarting the computer with everything plugged in
2. Pressing Command + F1 when it's plugged
Any advice would be helpful!

Hi lancekatigbak,
If you're having issues with the display out on your MacBook Pro, you may want to take a look at the troubleshooting steps in the following article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Cheers,
- Brenden

EXACTLY what cable(s) do I need to connect my MacBook Pro (early 2011) to an external display with a 2560x1440 resolution?

I am trying to connect my MacBook Pro (early 2011 w/ Intel HD 3000/ 384Mb) to an external display with a 2560x1440 resolution. Specifically, what cable/connections do I need to display at this resolution? I cannot get the display to work using a "Thunderbolt to HDMI" or a "Thunderbolt to DVI" connector. Note: I used both older and newer (uni-directional) HDMI cables on the first config, and a Dual-link DVI cable on the second config. Apple specs state this is possible ( support.apple.com/kb/SP619 ), but I am at a loss as to how this can be done. Thanks in advance for the help!

You use a Mini DisplayPort to either HDMI or dual-link DVI adapter. If that component doesn't work, something's wrong with either the cable or something else in the connection.
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