External display requires reboot

Hi guys,
I seem to have an issue with my MacBook where if I hook up an external display (a Dell LCD), it requires me to reboot before it is recognized.
If I do not reboot and hook up the display, the display continues to sleep, and the MacBook (under System Profiler and Display Preferences) displays nothing about the external display.
After rebooting, everything works perfectly however.
Has anyone ran into this same issue as well?
Thanks in advance.
MacBook Mac OS X (10.4.7)

With mine, a VGA HP monitor, I just plug it in to my miniDVI adapter and go. No reboot needed. NOt really sure what the problem could be.

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Interval Since Last Panic Report: 55156 sec
Panics Since Last Report:          4
Anonymous UUID:                    FA994096-76F6-4198-ABA6-2B55C2074E1F
Wed Apr 27 23:52:45 2011
panic(cpu 2 caller 0x5b9efc8f): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0x7e705000 0x0a5480a2, D0, P2/4
Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x5aa31c38 : 0x21b510 (0x5d9514 0x5aa31c6c 0x223978 0x0)
0x5aa31c88 : 0x5b9efc8f (0x5bc0523c 0x5bc75840 0x5bc143cc 0x0)
0x5aa31d28 : 0x5bb0a5d3 (0x90bd804 0x7424004 0x100 0x0)
0x5aa31d78 : 0x5bb015cc (0x7424004 0x100 0x5aa31da8 0x5b9df76c)
0x5aa31da8 : 0x5c224965 (0x7424004 0x100 0x438004ee 0x5afc4322)
0x5aa31ee8 : 0x5bb29250 (0x7424004 0x734d004 0x0 0x0)
0x5aa31f28 : 0x5b9f8e23 (0x7424004 0x734d004 0x0 0x0)
0x5aa31fc8 : 0x5b9f5502 (0x0 0x9 0x0 0x0)
0x5aa32178 : 0x5b9f768e (0x0 0x600d600d 0x7027 0x5aa321a8)
0x5aa32248 : 0x5afb9a25 (0xc1d00041 0xbeef0003 0x13b55680 0x71)
0x5aa322e8 : 0x5afb9f9d (0x44ca4000 0x13b55680 0x7804804 0x0)
0x5aa32328 : 0x5af91e0b (0x44ca4000 0x13b55680 0x7804804 0x0)
0x5aa32358 : 0x5afb95d2 (0x44ca4000 0x13b55680 0x7804804 0x0)
0x5aa32378 : 0x5af91418 (0x44ca4000 0x13b55680 0x7804804 0x0)
0x5aa32398 : 0x5afb9f48 (0x44ca4000 0x7804800 0x2 0x2)
0x5aa323d8 : 0x5af947b9 (0x44ca4000 0x7804800 0x0 0x9ea1800)
0x5aa32418 : 0x5af92269 (0x44ca4000 0x44b86000 0x44e4a000 0x88aa700)
0x5aa32468 : 0x5afe4ddf (0x44ca4000 0x44b86000 0x44e4a000 0x88aa700)
0x5aa324f8 : 0x5afd65a9 (0x88aa700 0x9ea1800 0x0 0x1)
0x5aa32558 : 0x5afd6810 (0x44b86000 0x44b8677c 0x9ea1800 0x0)
0x5aa325a8 : 0x5afd6ce4 (0x44b86000 0x44b8677c 0x5aa328cc 0x5aa3286c)
0x5aa328e8 : 0x5afd3aaf (0x44b86000 0x44b8677c 0x1 0x220677)
0x5aa32908 : 0x5af9b5a1 (0x44b86000 0x44b8677c 0x13b8d940 0x5051f7)
0x5aa32938 : 0x5afd5572 (0x44b86000 0x5aa32a7c 0x5aa32968 0x5046b1)
0x5aa32978 : 0x5af9f8de (0x44b86000 0x5aa32a7c 0x5aa32a7c 0x5aa329e0)
0x5aa32ab8 : 0x5afd8ee6 (0x44b86000 0x0 0x5aa32bcc 0x5aa32bc8)
0x5aa32b68 : 0x5af9bc93 (0x44b86000 0x0 0x5aa32bcc 0x5aa32bc8)
0x5aa32be8 : 0x56a738 (0x44b86000 0x0 0x5aa32e3c 0x5aa32c74)
0x5aa32c38 : 0x56afd7 (0x5b02a020 0x44b86000 0xbc06088 0x1)
0x5aa32c88 : 0x56b88b (0x44b86000 0x10 0x5aa32cd0 0x0)
0x5aa32da8 : 0x285be0 (0x44b86000 0x10 0xbc06088 0x1)
0x5aa33e58 : 0x21d8be (0xbc06060 0x8c135a0 0x1fd7e8 0x5d43)
    Backtrace continues...
      Kernel Extensions in backtrace (with dependencies):
         com.apple.GeForce(6.2.6)@0x5af90000->0x5b045fff
            dependency: com.apple.NVDAResman(6.2.6)@0x5b989000
            dependency: com.apple.iokit.IONDRVSupport(2.2)@0x5ac4d000
            dependency: com.apple.iokit.IOPCIFamily(2.6)@0x5349e000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x5b504000
         com.apple.nvidia.nv50hal(6.2.6)@0x5c0ee000->0x5c502fff
            dependency: com.apple.NVDAResman(6.2.6)@0x5b989000
         com.apple.NVDAResman(6.2.6)@0x5b989000->0x5bc76fff
            dependency: com.apple.iokit.IOPCIFamily(2.6)@0x5349e000
            dependency: com.apple.iokit.IONDRVSupport(2.2)@0x5ac4d000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x5b504000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
10J869
Kernel version:
Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 20724823936206
unloaded kexts:
com.apple.driver.AppleMultitouchDriver    207.10 (addr 0x5ab3d000, size 0x36864) - last unloaded 20288128184598
loaded kexts:
net.osculator.driver.OSCulatorIOKit    1.4.12
com.apple.driver.AppleBluetoothMultitouch    54 - last loaded 20335073956689
com.apple.driver.AppleHWSensor    1.9.3d0
com.apple.driver.AGPM    100.12.19
com.apple.driver.AudioAUUC    1.54
com.apple.driver.AppleMikeyHIDDriver    1.2.0
com.apple.Dont_Steal_Mac_OS_X    7.0.0
com.apple.driver.AppleUpstreamUserClient    3.5.4
com.apple.driver.AppleMikeyDriver    1.9.9f12
com.apple.driver.AppleIntelHDGraphics    6.2.6
com.apple.driver.AppleHDA    1.9.9f12
com.apple.driver.AudioIPCDriver    1.1.6
com.apple.driver.AppleMCCSControl    1.0.17
com.apple.driver.AppleIntelHDGraphicsFB    6.2.6
com.apple.driver.SMCMotionSensor    3.0.0d4
com.apple.iokit.AppleBCM5701Ethernet    2.3.9b6
com.apple.kext.AppleSMCLMU    1.5.0d3
com.apple.driver.AppleGraphicsControl    2.8.68
com.apple.GeForce    6.2.6
com.apple.driver.AirPortBrcm43224    427.36.9
com.apple.driver.ACPI_SMC_PlatformPlugin    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.AppleIRController    303.8
com.apple.driver.AppleUSBTCKeyboard    200.3.2
com.apple.driver.AppleUSBCardReader    2.5.8
com.apple.BootCache    31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
com.apple.iokit.SCSITaskUserClient    2.6.5
com.apple.iokit.IOAHCIBlockStorage    1.6.3
com.apple.driver.AppleUSBHub    4.1.7
com.apple.driver.AppleUSBEHCI    4.1.8
com.apple.driver.AppleEFINVRAM    1.4.0
com.apple.driver.AppleSmartBatteryManager    160.0.0
com.apple.driver.AppleFWOHCI    4.7.1
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.IOBluetoothHIDDriver    2.4.0f1
com.apple.driver.AppleMultitouchDriver    207.10
com.apple.driver.AppleUSBHIDKeyboard    141
com.apple.driver.AppleHIDKeyboard    141
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    2.4.0f1
com.apple.iokit.IOSerialFamily    10.0.3
com.apple.driver.DspFuncLib    1.9.9f12
com.apple.iokit.IOAudioFamily    1.8.0fc1
com.apple.kext.OSvKernDSPLib    1.3
com.apple.driver.AppleSMBusController    1.0.8d0
com.apple.iokit.IOFireWireIP    2.0.3
com.apple.iokit.AppleProfileFamily    41
com.apple.driver.AppleHDAController    1.9.9f12
com.apple.iokit.IOHDAFamily    1.9.9f12
com.apple.iokit.IO80211Family    314.1.1
com.apple.iokit.IONetworkingFamily    1.10
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    6.2.6
com.apple.NVDAResman    6.2.6
com.apple.iokit.IONDRVSupport    2.2
com.apple.iokit.IOGraphicsFamily    2.2
com.apple.driver.BroadcomUSBBluetoothHCIController    2.4.0f1
com.apple.driver.AppleUSBBluetoothHCIController    2.4.0f1
com.apple.iokit.IOBluetoothFamily    2.4.0f1
com.apple.driver.AppleUSBMultitouch    206.6
com.apple.iokit.IOUSBHIDDriver    4.1.5
com.apple.iokit.IOUSBMassStorageClass    2.6.5
com.apple.iokit.IOSCSIBlockCommandsDevice    2.6.5
com.apple.driver.AppleUSBMergeNub    4.1.8
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.IOUSBFamily    4.1.8
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.security.TMSafetyNet    6
com.apple.kext.AppleMatch    1.0.0d1
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
Model: MacBookPro6,2, BootROM MBP61.0057.B0C, 2 processors, Intel Core i7, 2.66 GHz, 4 GB, SMC 1.58f15
Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB
Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.10.131.36.9)
Bluetooth: Version 2.4.0f1, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: TOSHIBA MK5055GSXF, 465.76 GB
Serial ATA Device: MATSHITADVD-R   UJ-898
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa130000
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0xfa113000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0236, 0xfa120000
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0xfd110000

Mid 2010 Macbook Pro sleep and external display problem

I recently upgraded to the new 2010 15 inch core i7 Macbook Pro. The problem i have is that it will not detect an external display (23inch Cinema) after waking from sleep. This happens after using the display to extend the desktop and also when using the Macbook in closed mode.
I've managed to get it to detect the display only after either restarting the Macbook completely or by going into energy saver and switching to dedicated graphics then going back to detect display.
It seems that when on integrated graphics it doesn't register that an external display is connected. If i leave a program open and running that causes the dedicated graphics to kick in then it works ok. If i close all programs, shut the macbook pros lid, computer sleeps and external display shuts off. If i click the mouse to wake with lid closed, apple logo lights, machine starts up few seconds later macbook returns to sleep. If i open the screen the machine wakes as normal but the external monitor doesn't.
Any help is much appreciated as its starting to frustrate me now...
Many thanks
oh and im running OSX 10.6.3

I thought it was intermittent to begin with until i started looking into it. By leaving programs open, like aperture, before i put the machine to sleep it appears to wake the external monitor up without a problem. If i shut all programs or leave basic things open like safari and mail which don't require the dedicated graphics, then upon wake it wont register an external screen is connected.
Manually detecting displays in settings doesn't work.
Disconnecting and reconnecting mini display port doesn't work.
Turning off power to cinema display and powering back up doesn't work.
To get the display going again its either 1) turn off macbook pro and re-boot or 2) re-start the machine then the display is automatically recognised. Or 3) launch a programme that kicks in dedicated graphics then manually go in and detect displays again..... like magic the display then springs to life.
No ideas anyone??

MacBook Pro cannot connect to external display (projector) under Windows

Our office has got one of those lovely new 13" MacBook Pros and we cannot figure out why it cannot connect to either of our 2 projectors with Windows 7.
We have an older MBP with NVidia graphics that connects just fine under both OS X and Windows. And this machine connects fine under Snow Leopard.
There was a recent Thunderbolt chipset update and we applied that; on the Windows side the Intel driver has been updated but nothing happens. Have also zapped the PRAM to no effect.
To add another wrinkle: I just connected the MBP to my Cinema Display and the external display shows fine in both OS X and Windows--Windows didn't even require me to go to the control panel.
This leads me to two thoughts: either it is something with the Thunderbolt to VGA adaptor (hard to believe, though, since it works for OS X) or it is something to do with the native resolution of the projector (equally hard to believe, as changing through various settings in Windows NOTHING happens on the external projector--it doesn't blink, go back or anything.)
Any ideas?

I wish I could find the discussion, but I cannot.
There was a discussion about the Windows 7 driver for the Thunderbolt port. The conclusion I believe was that it only outputs digital signals, not analog.
The other conclusions were:
A USB-VGA adapter adapter bypasses this limitation because the driver is in the adapter itself and works regardless of the OSX/Windows operating system in charge.
Run Windows under VM, where OSX is in charge and can create analog output through Thunderbolt
If only I could find that thread ...

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

External display requires reboot

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