Intermittent Black Screens with 27" on Pro

I am experiencing random black screens while I work. I have two cinema displays. Both are 27" thunderbolt. (But this issue happened when I only had one.) They are running on a Mac Pro. And seem to have no discrimination to what program or OS version. While working, they will simply blink to a black screen, then go back (as if they were resetting or turning off/on). They do not do this at the same time, but they both do it—independently of each other. There also seems to be a subtle click noise that occurs. Below are my stats:
Mac Pro (Late 2013)
Processor: 3.5 GHz 6-Core Intel Xeon E5
Memory: 12 GB 1866 MHz DDR3 ECC
Graphics: AMD FirePro D700 6144 MB
Apple Thunderbolt Display (x2)
27-inch (2560 x 1440)
AMD FirePro D700 6144 MB graphics
Any ideas? It is seemingly happening more often recently.
PS. This post should be under "Thunderbolt Display" but it will not allow me to move it.

I have the same problem with a very similar setup. I have not noticed any "click" noise. Monitor just blinks off momentarily. The problem only began when I upgraded to OSX Yosemite. My current thinking is that it is a Yosemite bug.
Mac Pro (Late 2013)
Processor: 3.5 GHz 6-Core Intel Xeon E5
Memory: 64 GB 1866 MHz DDR3 ECC
Graphics: AMD FirePro D500 3072 MB
Apple 27-inch thunderbolt x1

Similar Messages

Black screen with Distortion - Macbook Pro (Retina 15 inch Late 2013)

Hello.
I don't know much about computer problems like this, hence why i'm here but yesterday my Macbook Pro started to get pixel size flickering snow with some flashing horizontal lines. It kept functioning fine although this was happening. Then later when I opened it up I discovered it had become much worse only showing the below screens when the power is turned on and nothing more.
It's as though everything has been compressed to the left hand side and then fragmented across the rest of the screen.
Any ideas? It hasn't had any drops or bumps etc.
Can't get an appointment with a genius...
Thanks.

I would take it in, It could be graphix card, display, cable, lose connection. No easy resolve on your part.
Genius reservation http://www.apple.com/retail/geniusbar/
on-line https://getsupport.apple.com/GetproductgroupList.action
check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

Can anyone help read my crash report? My 2010 macbook pro keeps going black screen with looped sound

I've had this laptop since 2010 and it's been pretty good up until about two months ago when it would just randomly crash. The screen would go black and if there was sound going on, the sound would just loop on that single second like a broken record. The only way to get it out of that is to hold the power button and then turn it back on. When these crashes would happen in the beginning it would only be when I had Adobe Photoshop running, now it just happens whenever I'm simply using the internet browsing through Tumblr, Youtube, and Facebook.
Every time I turn my computer back on I get a crash report like this:
Interval Since Last Panic Report: 171569 sec
Panics Since Last Report:          11
Anonymous UUID:                    8FD3B893-CF9A-463D-BF89-1278EB5F8177
Tue May 13 14:29:41 2014
panic(cpu 0 caller 0x9f5c9b): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0xa686e000 0x0a5480a2, D0, P2/4
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x7c3aa188 : 0x21b837 (0x5dd7fc 0x7c3aa1bc 0x223ce1 0x0)
0x7c3aa1d8 : 0x9f5c9b (0xc0b28c 0xc7b800 0xc19e60 0x0)
0x7c3aa278 : 0xb10608 (0xdde7804 0xf00a004 0x100 0xcd52b6)
0x7c3aa2c8 : 0xb07601 (0xf00a004 0x100 0x7c3aa2f8 0x9e5778)
0x7c3aa2f8 : 0x16d79a6 (0xf00a004 0x100 0x438004ee 0x7c3aa308)
0x7c3aa438 : 0xb2f2b5 (0xf00a004 0xf00d004 0x0 0x0)
0x7c3aa478 : 0x9fee7c (0xf00a004 0xf00d004 0x0 0x0)
0x7c3aa518 : 0x9fb55b (0x0 0x9 0x0 0x0)
0x7c3aa6c8 : 0x9fd58f (0x0 0x600d600d 0x702b 0x7c3aa6f8)
0x7c3aa798 : 0xcc0eae (0xc1d00042 0xbfef0033 0xbfef0034 0x857c)
0x7c3aa808 : 0xcd0734 (0x1d30c400 0x1dffac00 0x8 0x3)
0x7c3aa828 : 0xcf5322 (0x1dffac00 0xb 0x7c3aa848 0x2345f4)
0x7c3aa858 : 0xcf5b3d (0xf205000 0x0 0x7c3aa87c 0x0)
0x7c3aa888 : 0xcd5d79 (0xf205000 0xa47ea080 0x0 0x35)
0x7c3aa8d8 : 0xc97d0c (0x6d2c2000 0x0 0x0 0x3)
0x7c3aa948 : 0xc9740f (0x6d2c2000 0x0 0x2 0x3)
0x7c3aa978 : 0xc8d05f (0x6d2c2000 0x0 0x2 0x6d2bf000)
0x7c3aaab8 : 0xcc65d8 (0x6d2bf000 0x1 0x7c3aabcc 0x7c3aabc8)
0x7c3aab68 : 0xc88fe1 (0x6d2bf000 0x1 0x7c3aabcc 0x7c3aabc8)
0x7c3aabe8 : 0x56da06 (0x6d2bf000 0x0 0x7c3aae3c 0x7c3aac74)
0x7c3aac38 : 0x56e2a5 (0xd17720 0x6d2bf000 0x1d699d88 0x1)
0x7c3aac88 : 0x56eb59 (0x6d2bf000 0x10 0x7c3aacd0 0x0)
0x7c3aada8 : 0x286638 (0x6d2bf000 0x10 0x1d699d88 0x1)
0x7c3abe58 : 0x21dbe5 (0x1d699d60 0x1c8325a0 0x1fd7e8 0x5d43)
0x7c3abe98 : 0x210a86 (0x1d699d00 0x0 0xf0e9d90 0xf278700)
0x7c3abef8 : 0x216f84 (0x1d699d00 0x0 0x0 0x0)
0x7c3abf78 : 0x295c57 (0xdfc8248 0x0 0x0 0x0)
0x7c3abfc8 : 0x2a256d (0xdfc8244 0x1 0x10 0x1c83f120)
      Kernel Extensions in backtrace (with dependencies):
         com.apple.nvidia.nv50hal(6.4.0)@0x15a1000->0x19b5fff
            dependency: com.apple.NVDAResman(6.4.0)@0x98f000
         com.apple.GeForce(6.4.0)@0xc7d000->0xd33fff
            dependency: com.apple.NVDAResman(6.4.0)@0x98f000
            dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x982000
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x949000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x960000
         com.apple.NVDAResman(6.4.0)@0x98f000->0xc7cfff
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x949000
            dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x982000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x960000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
10K549
Kernel version:
Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 10177875731756
unloaded kexts:
com.apple.filesystems.msdosfs          1.6.3 (addr 0x83407000, size 0x53248) - last unloaded 3154654100337
loaded kexts:
com.vara.driver.VaraAudio          1.0.3
com.Cycling74.driver.Soundflower          1.6.2
com.pctools.iantivirus.kfs          1.0.1
com.apple.driver.AppleHWSensor          1.9.3d0 - last loaded 1594858749190
com.apple.filesystems.autofs          2.1.0
com.apple.driver.AppleMikeyHIDDriver          1.2.0
com.apple.driver.AppleUpstreamUserClient          3.5.7
com.apple.driver.AppleMCCSControl          1.0.20
com.apple.driver.AppleMikeyDriver          2.0.5f14
com.apple.driver.AGPM          100.12.31
com.apple.driver.AppleHDA          2.0.5f14
com.apple.driver.AudioAUUC          1.57
com.apple.kext.AppleSMCLMU          1.5.2d10
com.apple.driver.AppleIntelHDGraphics          6.4.0
com.apple.driver.AppleIntelHDGraphicsFB          6.4.0
com.apple.driver.ACPI_SMC_PlatformPlugin          4.7.0a1
com.apple.GeForce          6.4.0
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AudioIPCDriver          1.1.6
com.apple.driver.AppleLPC          1.5.1
com.apple.driver.AppleGraphicsControl          2.10.6
com.apple.driver.SMCMotionSensor          3.0.1d2
com.apple.driver.AppleUSBTCButtons          201.6
com.apple.driver.AppleUSBTCKeyboard          201.6
com.apple.driver.AppleIRController          303.8
com.apple.driver.AppleUSBCardReader          2.6.1
com.apple.BootCache          31.1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.iokit.SCSITaskUserClient          2.6.8
com.apple.iokit.IOAHCIBlockStorage          1.6.4
com.apple.driver.AirPortBrcm43224          428.42.4
com.apple.iokit.AppleBCM5701Ethernet          3.0.5b8
com.apple.driver.AppleEFINVRAM          1.4.0
com.apple.driver.AppleSmartBatteryManager          160.0.0
com.apple.driver.AppleUSBHub          4.2.4
com.apple.driver.AppleAHCIPort          2.1.7
com.apple.driver.AppleFWOHCI          4.7.3
com.apple.driver.AppleACPIButtons          1.3.6
com.apple.driver.AppleRTC          1.3.1
com.apple.driver.AppleUSBEHCI          4.2.4
com.apple.driver.AppleHPET          1.5
com.apple.driver.AppleSMBIOS          1.7
com.apple.driver.AppleACPIEC          1.3.6
com.apple.driver.AppleAPIC          1.4
com.apple.driver.AppleIntelCPUPowerManagementClient          142.6.0
com.apple.security.sandbox          1
com.apple.security.quarantine          0
com.apple.nke.applicationfirewall          2.1.14
com.apple.driver.AppleIntelCPUPowerManagement          142.6.0
com.apple.driver.AppleProfileReadCounterAction          17
com.apple.driver.DspFuncLib          2.0.5f14
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.driver.AppleSMBusController          1.0.10d0
com.apple.nvidia.nv50hal          6.4.0
com.apple.driver.IOPlatformPluginFamily          4.7.0a1
com.apple.iokit.IOFireWireIP          2.0.3
com.apple.NVDAResman          6.4.0
com.apple.iokit.IOSurface          74.2
com.apple.iokit.IOBluetoothSerialManager          2.4.5f3
com.apple.iokit.IOSerialFamily          10.0.3
com.apple.iokit.IOAudioFamily          1.8.3fc2
com.apple.kext.OSvKernDSPLib          1.3
com.apple.driver.AppleHDAController          2.0.5f14
com.apple.iokit.IOHDAFamily          2.0.5f14
com.apple.iokit.AppleProfileFamily          41
com.apple.driver.AppleSMBusPCI          1.0.10d0
com.apple.driver.AppleBacklightExpert          1.0.1
com.apple.iokit.IONDRVSupport          2.2.1
com.apple.iokit.IOGraphicsFamily          2.2.1
com.apple.driver.AppleSMC          3.1.0d5
com.apple.driver.BroadcomUSBBluetoothHCIController          2.4.5f3
com.apple.driver.AppleUSBBluetoothHCIController          2.4.5f3
com.apple.iokit.IOBluetoothFamily          2.4.5f3
com.apple.driver.AppleUSBMultitouch          207.7
com.apple.iokit.IOUSBHIDDriver          4.2.0
com.apple.iokit.IOSCSIBlockCommandsDevice          2.6.8
com.apple.iokit.IOUSBMassStorageClass          2.6.7
com.apple.driver.AppleUSBMergeNub          4.2.4
com.apple.driver.AppleUSBComposite          3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice          2.6.8
com.apple.iokit.IOBDStorageFamily          1.6
com.apple.iokit.IODVDStorageFamily          1.6
com.apple.iokit.IOCDStorageFamily          1.6.1
com.apple.driver.XsanFilter          402.1
com.apple.iokit.IOAHCISerialATAPI          1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily          2.6.8
com.apple.iokit.IO80211Family          320.1
com.apple.iokit.IONetworkingFamily          1.10
com.apple.iokit.IOUSBUserClient          4.2.4
com.apple.iokit.IOAHCIFamily          2.0.6
com.apple.iokit.IOFireWireFamily          4.2.6
com.apple.driver.AppleEFIRuntime          1.4.0
com.apple.iokit.IOHIDFamily          1.6.6
com.apple.iokit.IOUSBFamily          4.2.4
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          1.6.3
com.apple.driver.AppleACPIPlatform          1.3.6
com.apple.iokit.IOPCIFamily          2.6.5
com.apple.iokit.IOACPIFamily          1.3.0
Model: MacBookPro6,2, BootROM MBP61.0057.B0C, 2 processors, Intel Core i7, 2.66 GHz, 8 GB, SMC 1.58f17
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 (5.10.131.42.4)
Bluetooth: Version 2.4.5f3, 2 service, 12 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 / 2
USB Device: Deskjet F4400 series, 0x03f0 (Hewlett Packard), 0x7711, 0xfa140000 / 6
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa130000 / 5
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0236, 0xfa120000 / 4
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 3
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0xfa113000 / 8
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: My Passport 0748, 0x1058 (Western Digital Technologies, Inc.), 0x0748, 0xfd130000 / 5
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0xfd110000 / 4
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 3
I don't know if this is the same crash report but I saved another one too:
Interval Since Last Panic Report: 149680 sec
Panics Since Last Report:          6
Anonymous UUID:                    8FD3B893-CF9A-463D-BF89-1278EB5F8177
Sun May 11 21:05:02 2014
panic(cpu 0 caller 0x9f5c9b): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0xa684e000 0x0a5480a2, D0, P2/4
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x7c2da188 : 0x21b837 (0x5dd7fc 0x7c2da1bc 0x223ce1 0x0)
0x7c2da1d8 : 0x9f5c9b (0xc0b28c 0xc7b800 0xc19e60 0x0)
0x7c2da278 : 0xb10608 (0xedbf804 0xe4ad004 0x100 0xcd52b6)
0x7c2da2c8 : 0xb07601 (0xe4ad004 0x100 0x7c2da2f8 0x9e5778)
0x7c2da2f8 : 0x16d79a6 (0xe4ad004 0x100 0x438004ee 0x7c2da308)
0x7c2da438 : 0xb2f2b5 (0xe4ad004 0xe57b004 0x0 0x0)
0x7c2da478 : 0x9fee7c (0xe4ad004 0xe57b004 0x0 0x0)
0x7c2da518 : 0x9fb55b (0x0 0x9 0x0 0x0)
0x7c2da6c8 : 0x9fd58f (0x0 0x600d600d 0x702b 0x7c2da6f8)
0x7c2da798 : 0xcc0eae (0xc1d00041 0xbfef0033 0xbfef0034 0x857c)
0x7c2da808 : 0xcd0734 (0x1dc5c400 0x1d96b580 0x8 0x1)
0x7c2da828 : 0xcf5322 (0x1d96b580 0xb 0x7c2da848 0x2345f4)
0x7c2da858 : 0xcf5b3d (0xf206000 0x0 0x7c2da87c 0x0)
0x7c2da888 : 0xcd5d79 (0xf206000 0x988f6080 0x0 0x0)
0x7c2da8d8 : 0xc97d0c (0x6d2ad000 0x0 0x0 0x3)
0x7c2da948 : 0xc9740f (0x6d2ad000 0x0 0x2 0x3)
0x7c2da978 : 0xc8d05f (0x6d2ad000 0x0 0x2 0x6d257000)
0x7c2daab8 : 0xcc65d8 (0x6d257000 0x1 0x7c2dabcc 0x7c2dabc8)
0x7c2dab68 : 0xc88fe1 (0x6d257000 0x1 0x7c2dabcc 0x7c2dabc8)
0x7c2dabe8 : 0x56da06 (0x6d257000 0x0 0x7c2dae3c 0x7c2dac74)
0x7c2dac38 : 0x56e2a5 (0xd17720 0x6d257000 0x1e079988 0x1)
0x7c2dac88 : 0x56eb59 (0x6d257000 0x10 0x7c2dacd0 0x0)
0x7c2dada8 : 0x286638 (0x6d257000 0x10 0x1e079988 0x1)
0x7c2dbe58 : 0x21dbe5 (0x1e079960 0x1e3685a0 0x1ed788 0x5d43)
0x7c2dbe98 : 0x210a86 (0x1e079900 0x0 0xddc1000 0xf2949d0)
0x7c2dbef8 : 0x216f84 (0x1e079900 0x0 0x0 0x0)
0x7c2dbf78 : 0x295c57 (0xdf767e8 0x0 0x0 0x0)
0x7c2dbfc8 : 0x2a256d (0xdf767e4 0x0 0x10 0xf3ab3c0)
      Kernel Extensions in backtrace (with dependencies):
         com.apple.nvidia.nv50hal(6.4.0)@0x15a1000->0x19b5fff
            dependency: com.apple.NVDAResman(6.4.0)@0x98f000
         com.apple.GeForce(6.4.0)@0xc7d000->0xd33fff
            dependency: com.apple.NVDAResman(6.4.0)@0x98f000
            dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x982000
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x949000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x960000
         com.apple.NVDAResman(6.4.0)@0x98f000->0xc7cfff
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x949000
            dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x982000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x960000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
10K549
Kernel version:
Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 26194070830465
unloaded kexts:
com.apple.driver.AppleWWANSupport          2.0.4b0 (addr 0x1432000, size 0x12288) - last unloaded 20460721782172
loaded kexts:
com.vara.driver.VaraAudio          1.0.3
com.Cycling74.driver.Soundflower          1.6.2
com.pctools.iantivirus.kfs          1.0.1
com.apple.driver.AppleHWSensor          1.9.3d0 - last loaded 20385461271440
com.apple.filesystems.autofs          2.1.0
com.apple.driver.AGPM          100.12.31
com.apple.driver.AppleMikeyHIDDriver          1.2.0
com.apple.driver.AppleMikeyDriver          2.0.5f14
com.apple.driver.AppleUpstreamUserClient          3.5.7
com.apple.driver.AppleMCCSControl          1.0.20
com.apple.driver.AppleHDA          2.0.5f14
com.apple.driver.AudioAUUC          1.57
com.apple.driver.AppleIntelHDGraphics          6.4.0
com.apple.kext.AppleSMCLMU          1.5.2d10
com.apple.driver.AppleIntelHDGraphicsFB          6.4.0
com.apple.driver.SMCMotionSensor          3.0.1d2
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AudioIPCDriver          1.1.6
com.apple.GeForce          6.4.0
com.apple.driver.ACPI_SMC_PlatformPlugin          4.7.0a1
com.apple.driver.AppleLPC          1.5.1
com.apple.driver.AppleGraphicsControl          2.10.6
com.apple.driver.AppleUSBTCButtons          201.6
com.apple.driver.AppleUSBCardReader          2.6.1
com.apple.driver.AppleIRController          303.8
com.apple.driver.AppleUSBTCKeyboard          201.6
com.apple.iokit.SCSITaskUserClient          2.6.8
com.apple.BootCache          31.1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.iokit.IOAHCIBlockStorage          1.6.4
com.apple.driver.AppleFWOHCI          4.7.3
com.apple.driver.AppleUSBHub          4.2.4
com.apple.driver.AirPortBrcm43224          428.42.4
com.apple.iokit.AppleBCM5701Ethernet          3.0.5b8
com.apple.driver.AppleEFINVRAM          1.4.0
com.apple.driver.AppleSmartBatteryManager          160.0.0
com.apple.driver.AppleAHCIPort          2.1.7
com.apple.driver.AppleUSBEHCI          4.2.4
com.apple.driver.AppleACPIButtons          1.3.6
com.apple.driver.AppleRTC          1.3.1
com.apple.driver.AppleHPET          1.5
com.apple.driver.AppleSMBIOS          1.7
com.apple.driver.AppleACPIEC          1.3.6
com.apple.driver.AppleAPIC          1.4
com.apple.driver.AppleIntelCPUPowerManagementClient          142.6.0
com.apple.security.sandbox          1
com.apple.security.quarantine          0
com.apple.nke.applicationfirewall          2.1.14
com.apple.driver.AppleIntelCPUPowerManagement          142.6.0
com.apple.driver.AppleProfileReadCounterAction          17
com.apple.driver.DspFuncLib          2.0.5f14
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.driver.AppleSMBusController          1.0.10d0
com.apple.nvidia.nv50hal          6.4.0
com.apple.iokit.IOFireWireIP          2.0.3
com.apple.iokit.IOSurface          74.2
com.apple.iokit.IOBluetoothSerialManager          2.4.5f3
com.apple.iokit.IOSerialFamily          10.0.3
com.apple.iokit.IOAudioFamily          1.8.3fc2
com.apple.kext.OSvKernDSPLib          1.3
com.apple.driver.AppleHDAController          2.0.5f14
com.apple.iokit.IOHDAFamily          2.0.5f14
com.apple.NVDAResman          6.4.0
com.apple.iokit.AppleProfileFamily          41
com.apple.driver.AppleSMC          3.1.0d5
com.apple.driver.IOPlatformPluginFamily          4.7.0a1
com.apple.driver.AppleSMBusPCI          1.0.10d0
com.apple.driver.AppleBacklightExpert          1.0.1
com.apple.iokit.IONDRVSupport          2.2.1
com.apple.iokit.IOGraphicsFamily          2.2.1
com.apple.driver.BroadcomUSBBluetoothHCIController          2.4.5f3
com.apple.driver.AppleUSBBluetoothHCIController          2.4.5f3
com.apple.iokit.IOBluetoothFamily          2.4.5f3
com.apple.iokit.IOSCSIBlockCommandsDevice          2.6.8
com.apple.iokit.IOUSBMassStorageClass          2.6.7
com.apple.driver.AppleUSBMultitouch          207.7
com.apple.iokit.IOUSBHIDDriver          4.2.0
com.apple.driver.AppleUSBMergeNub          4.2.4
com.apple.driver.AppleUSBComposite          3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice          2.6.8
com.apple.iokit.IOBDStorageFamily          1.6
com.apple.iokit.IODVDStorageFamily          1.6
com.apple.iokit.IOCDStorageFamily          1.6.1
com.apple.driver.XsanFilter          402.1
com.apple.iokit.IOAHCISerialATAPI          1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily          2.6.8
com.apple.iokit.IOFireWireFamily          4.2.6
com.apple.iokit.IOUSBUserClient          4.2.4
com.apple.iokit.IO80211Family          320.1
com.apple.iokit.IONetworkingFamily          1.10
com.apple.iokit.IOAHCIFamily          2.0.6
com.apple.iokit.IOUSBFamily          4.2.4
com.apple.driver.AppleEFIRuntime          1.4.0
com.apple.iokit.IOHIDFamily          1.6.6
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          1.6.3
com.apple.driver.AppleACPIPlatform          1.3.6
com.apple.iokit.IOPCIFamily          2.6.5
com.apple.iokit.IOACPIFamily          1.3.0
Model: MacBookPro6,2, BootROM MBP61.0057.B0C, 2 processors, Intel Core i7, 2.66 GHz, 8 GB, SMC 1.58f17
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 (5.10.131.42.4)
Bluetooth: Version 2.4.5f3, 2 service, 12 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 / 2
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0236, 0xfa120000 / 5
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0xfa113000 / 8
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa130000 / 3
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: Dell USB Optical Mouse, 0x413c (Dell Inc.), 0x3012, 0xfd130000 / 5
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 4
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0xfd110000 / 3

First, uninstall the third-party software that installed these extensions:
com.vara.driver.VaraAudio          1.0.3
com.Cycling74.driver.Soundflower          1.6.2
com.pctools.iantivirus.kfs          1.0.1
Remove the Dell mouse and use the original mouse.
See if the above help. If they don't:
The problem is likely due to the discreet GPU failing. Download gfxCardStatus 2.3 and use it to disable the GPU. This is a temporary workaround until you get your motherboard replaced.
MacBook Pro (15-inch, Mid 2010)- Intermittent black screen or loss of video

Late 2007 MacBook Pro intermittent black screen

I have this very odd issue with an intermittent black screen on a late 2007 MacBook Pro (4GB/320GB 7200rpm) Mac OS X 10.6.8 v1.1
Apologies for the length of the post.
In cycles separated by a few days to a week, the screen will flicker to black, initially very briefly, then for longer periods until it is black continuously, where it stays from a few hours to a couple of days then it flickers to normal, again very briefly then with longer intervals until it is steady and normal. It can then be fine for a week or more.
When the screen is working, it's perfect; no lines, stripes, colour shift or any difference to what one would expect. When it is black, the backlight is still operational (and dimming when on battery power) but there is no image - all pixels are solid black. Shining a torch on/through the screen does not reveal any image. When mirrored, the external monitor shows the brightness adjustment moving up and down in response to the key presses but it has no effect on the internal screen.
My external display (Eizo) is always functional no matter what the built-in one is doing and is completely solid at all times.
There is no correlation to temperature (I have SMC fan control), sleep, restart, fan speed, power source or anything environmental. The MacBook is on a fan stand for most of the time. External connections make no difference. If the fault is present before changing any of these factors, it is there after.
I am aware that this machine has known vulnerabilities with GPU and display issues but none present quite like this. I have performed the usual trawl on the net and I now know more than I ever wanted to about attempts to fix it.
Software remedies attempted:
Resetting PRAM and power manager.
No sleep image file (never used this option). I deleted the old swap files that were there in any case but this unsurprisingly did nothing.
Resetting the display settings via keyboard commands or Sys Prefs.
Screen savers and settings are not implicated.
Nothing whatever in the console logs that I can see.
TechTool Pro gives video RAM a clean bill of health and all other components pass including tests on the HD with TTP and DiskWarrior.
Safe boot and booting from systems on backups seem to have no effect but one safe boot restored the screen briefly - I think it was a coincidence.
I updated the OS from 10.6.6 to 10.6.8 while this fault was coming and going and it made no difference. I usually prepare the machine for updates by running the cron jobs, repairing permissions etc.
In expectation of suffering this fault when the external monitor was not connected, I installed iScreen on the MacBook and use my iPad as a supplementary display and that works well too. Having all three operating, when the internal is functioning, is quite fun.
Hardware tests:
I removed the upper plate holding the keyboard and the interior of the machine was very clean with only some small dust accumulations in the fans, which were removed. There was no sign of any discolouration, corrosion, or other unpleasantness on the PCBs. All connectors and wiring looked good.
Every part of the logic board, cables and connectors were percussed, gently deflected and spray freezed, both while the fault was present and not (machine running) with no effect.
Display back was removed and the LCD board given the same treatment. No changes.
Display cable disconnected at both ends and tested for continuity (probe resistance accounted for) and consistency with a Fluke 87 multimeter - passed OK. On a scope, active signals and power were present on all the pins when the display was working but the fault did not occur during this test, which might have been interesting.
No apparent shorting of the display cable but without removing it this cannot be proved.
Problem not affected by hinge position, pressure on any part of the display, twisting, percussing etc.
Used compressed air to blow out the connectors which were reseated carefully.
After all this, the machine remains in exactly the same state, cycling between operational and black with various flickering stages as it comes and goes.
All I can deduce is that as the external monitor has always been OK, the GPU itself is probably working fine and the fault is more likely in the LCD panel electronics. I doesn't feel like a software issue to me but heck, I don't know what is going on.
Does anyone have any experience of something like this?
Thanks,
Joel.

Thomas,
Thanks for your post and I'm sorry you have suffered the same problems.
My trust levels are not very high because it's clear there is some systemic display problem with this model, which is why Apple are fixing them. As I mentioned, we have no idea if the replacement boards are any different to the originals. From your experience it would look like they are not and my suspicion is that it is very unlikely that Apple made a new batch of these logic boards a long time after the model was discontinued. If anyone has evidence to the contrary, I stand to be corrected.
As you say, the difference between our two faults appears to be that a physical deformation of some part of the machine does something with yours but never did with mine. At one point I felt that a short in the internal display cable seemed like the best explanation for the problem but it looks like it's more complex than that because of the behaviour of our external displays and subsequent strange booting behaviour.
If, as I have read, the soldering of the GPU was faulty and leads to progressive failure of the graphics sub-system, then all kinds of strange behaviours could arise and produce the intermittent problems we have seen. Micro-fractures of the chip interconnects would suggest that tiny movements might change the presentation of the fault. If soldering really is the issue, then keeping the machine as cool as possible will extend the life of the connections. Consequently mine will sit on a fan-stand for the rest of its days, which is no problem because it just had Win 7 installed on it and I don't want to be seen in public with it in that state ;-)
All we can conclude is that a logic board swap fixes the problem for some indeterminate period, so the problem is on that board. Whether it is a design fault with the NVIDIA chip itself or a manufacturing fault with the board is not clear but we can probably forget LCD panels, cables, sleep issues, power supplies and all the other peripheral issues unless there is yet another design issue that causes the GPU to fail.
Are you intending to present your machine to Apple for another go at a fix?

HT1338 MacBook Pro (15-inch, Mid 2010): Intermittent black screen or loss of video

runing mac os x
verison 10.7.4
Macbook Pro (15- inch Mid 2010 )
issue Intermittent black screen or loss of video

I had same problem.
After installing, respectively Mountain Lion and Lion, the same error came again in both instalations. I tryed to replace the hard disk, and installed again, but the same error came up.
BUT now have two days running with Windows 8 on it and it run perfectly. I installed from boot camp and has not opened OX again.
So it is quite obvious that Apple has fixed it well enough. Windows cant haddel hardware issue better.

My MacBook Pro just turned itself off while installing Windows 7. It has now got a black screen with a white flashing bar in the top left corner...what can I do?

I was just installing windows 7 onto my MacBook Pro. I selected to have 200GB for Windows and the rest leave for Mac.
I clicked install and the bar filled up as it should do. However, once the install had completed, my MacBook turned itself off. I assumed this was normal. Now, my MacBook has a black screen with a white flashing underscore in the top left corner.
What is wrong and what should I do?

Hold down the Option key when starting up then on the sceen that comes up select Mac OS X to boot from.
The Win 7 install didn't go well and is hung in some way. You should use boot camp assistant to remove the win partition and start over.
Make sure you are using a Retail version of Win 7. A Branded OEM version, like ones from Dell and HP, will NOT work to install Windows 7 on your Mac.

My macbook pro keeps getting stuck on a black screen with a visible cursor, why is this happening and how do i fix this?

I have a mid-2009 13" Macbook Pro running OS X 10.9.4 and I've been noticing a problem lately (I think it used to happen before too but not as often as now). My screen will sometimes go black, and my cursor remains visible. It will stay like this, regardless of button mashing or trackpad tapping and clicking. It usually doesn't stay for too long but the other day it was staying like that for a good 5 minutes before switching back to the password-enter screen. It happens sometimes when the computer goes to sleep but sometimes it suddenly happens in the middle of use, stopping whatever I'm doing and locking me out for a few minutes. I want to know why this happens and how to prevent it from happening (or perhaps there just needs to be a patch?). What is particularly strange is that my girlfriend just bought a brand new Macbook Air and she already has the same exact problem as me.

Blank (lighted, but black) screen with cursor at bootup
[SOLVED] - Macbook Air Sleep/Wake problem
Dark screen on start-up can only see curser

TS4088 MacBook Pro (15-inch, Mid 2012): Intermittent black screen

My new MacBook Pro is running Mountain Lion and the screen suddenly goes black while I am working. It seems that the machine is running, but the screen just goes black and does not show the login box or anything else.
In order to get back to the login, I either have to restart it, or close the machine and open it again.
This seems to be the same problem reported for the MacBook Pro 2010-2011.
TS4088: MacBook Pro (15-inch, Mid 2010): Intermittent black screen or loss of video).
Any idea on what is going on??

I too have started having this problem. I am running OSX 10.9.4. Has anyone gotten any answers to why this may be happening? This issue just recently started. I can't say it was caused by any recent update.

I have macbook pro 13.3 inch. I am installing window 7 in boot camp manager after copying file of window upto 67% it doesn't response and i had forcely shotdown my macbook. Now my macbook doesn't open and stop in black screen with cursor blinking.

i have macbook pro 13.3 inch. I am installing window 7 in boot camp manager after copying file of window upto 67% it doesn't response and i had forcely shotdown my macbook. Now my macbook doesn't open and stop in black screen with cursor blinking. Now how could i open my macbook pro.

At startup hold down the Option/Alt key and from the screen that comes up select your OS X partition to start the computer from. Then use the Boot Camp Assistant app to Remove Windows and the partition you reated for it and it will Automatically place the space you allocated for the Windows install back into the OS X partition.
NOTE:
Do NOT use Disk Utility to erase the partition that was created for the Windows install. Use the Boot Camp Assistant app again to do that.

HT203554 MacBook Pro (15-inch, Mid 2010) intermittent black screen or loss of video. Can I still get this problem resolve by Apple or I'm screwed because the MacBook Pro (15-inch, Mid 2010) intermittent black screen or loss of video Quality Program has en

MacBook Pro (15-inch, Mid 2010) intermittent black screen or loss of video. Can I still get this problem resolve by Apple or I'm screwed because the MacBook Pro (15-inch, Mid 2010) intermittent black screen or loss of video Quality Program has ended?

You can have Apple replace the logic board, but it will be at your expense. The free replacement program has ended.
As a band aid you may try the following:
https://gfx.io/
This will allow you to run on only the integrated GPU.
Ciao.

HT1338 disk wont eject from my macbook pro and black screen with white letter text wont leave.

disk wont eject from my macbook pro. Displays black screen with white text. How do I remove or move on?

It sounds like you've experienced a "kernel panic".
This thread has some advice on how to deal with one.
If you need more advice, please explain what you mean by "disk won't eject from my macbook pro".

Macbook Pro boot shows black screen with white text cursor

Hello,
I have a MacBook Pro 7,1 MC374xx/A running Mavericks. My box has two internal hard drives in it. One had the Mac OS installed to it, and the other has absolutely nothing on it. I decided to give Boot Camp Assistant a try and chose the hard drive with nothing on it to install Windows on. I also had an external USB DVD drive attached with the Windows 7 installation disc on it.
So, next thing ya know, my Mac reboots and loads a black screen that says "Memory Overload." I take out the external USB drive and restart. Then it said, "No boot devices found." Now for whatever reason, it's just a black screen with a white text cursor.
What the heck happened?
I selected command R and confirmed that I installed Boot Camp on the right hard drive (the drive that did not contain my Mac OS). Then, I completely erased everything from the drive with Boot Camp on it. But still..black screen with white text cursor.
I have no Time Machine backups available so I'm forced to reinstall the OS. Any idea why this happened? It seems I must have attempted to install Boot Camp improperly. Any ideas or instructions on what to do now or how to install Boot Camp successfully on the Macbook Pro I own?
Earnestly,
Speck

Boot Camp- Windows installation boots to black screen with blinking cursor.

Boot Camp: Early 2011 MacBook Pro boots to black screen with blinking cursor after windows 7 installation.

I bought and downloaded the windows 7 ultimate edition 64 bit iso, then proceeded to perform a correct burn to a DVD one at the slowest speed and one at the fastest. all went well. so I open Boot Camp assistant and follow the instructions to the letter, downloaded the driver support to the flash drive. partitioned my drive with more than enough room 150 gb. its starts its install. I get through everything seamlessly where I put in my info all with the exception of my activation code. yet it still continues to finalize the install and does another restart. boots back up to either A. black screen saying press any key to boot to my install disk. B. if I take it out just a white curser. also I read it may be because I had the flash drive in while I was trying to boot so I removed it as well, same result. any input would be much appreciated.

Boot Camp- Windows installation boots to black screen with blinking cursor.

MacBook Pro 2102 black screen with cursor

When I opened my MacBook to use I only have a black screen with a light cursor at start up. Anyone else had this issue?

Here is a tip from a user. I have not tested this.
https://discussions.apple.com/thread/5994694?tstart=0
If this does not help and if you have a backup,erase and install OS X Mavericks.
Erase and Install OS X Mavericks.
http://support.apple.com/kb/PH14243

HELP!! Black screen on my MacBook Pro after leaving open and on for over 8 hours.

Hi everyone,
This is the first time I'm using the discussion board as I haven't had any problems with my MacBook Pro since I bought it in November 2010. However, yesterday, I left my laptop on and open for over 8 hours without realising. When I came back to my laptop it had a black screen that just wouldn't go away. I pressed all the buttons on my keypad to wake it up but this didn't work. The caps lock key lights up when pressed and the volume button makes the clicky noise when turned up and down but the screen is still black. I have tried turning the laptop on/off using the power button several times. When it starts up it makes the usual sounds and I can hear that it is on but the screen is still black.
I do not use my laptop for anything complicated. I really only use it to browse the web. I hope someone can help me. I have tried to make an appointment with the Genius Bar but there are no available appointments at my local one. I'm not a mac expert and don't understand technical words so please speak in layman terms otherwise I won't understand. Any help would be greatly appreciated. Many thanks

If you've a 15" version, maybe...
Mid-2010 15" MacBook Pros - the bad NVIDIA GPU
If you're having frequent kernel panics with your 15" mid-2010, or intermittent screen problems, the problem is, more than likely, the faulty NVIDIA GPU found in a number of those machines.
Here's just a sample of a kernel panic log that points to the faulty NVIDIA card:
Kernel Extensions in backtrace (with dependencies):
         com.apple.GeForce(6.4.0)@0x82ac4000->0x82b7afff
            dependency: com.apple.NVDAResman(6.4.0)@0x834a0000
            dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x82fd3000
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x7a802000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x8301b000
         com.apple.nvidia.nv50hal(6.4.0)@0x83c05000->0x84019fff
            dependency: com.apple.NVDAResman(6.4.0)@0x834a0000
         com.apple.NVDAResman(6.4.0)@0x834a0000->0x8378dfff
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x7a802000
            dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x82fd3000
            dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x8301b000
Here's the "official" Apple take on the issue - but the very real kernel panics need not be preceded by 'Intermittent black screen or loss of video'... in fact, you might not experience any video problems at all. Although video problems can certainly be a portent of things to come…
So what can you do? Print out a copy of your kernel panic and a copy of the Knowledge Base article and take them, along with your machine, to your local Apple Store or an Apple Authorized Service Provider. They should be more than willing to install a new logic board at no cost. I have no idea why this faulty GPU is making the headline here on the MacBook Pro forum so often now - could it be because Mountain Lion is just bringing the issue to a head more readily? I don't know - I only know that we're seeing more and more of these kernel panics of late.
Good luck,
Clinton

Intermittent Black Screens with 27" on Pro

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