Blank (black) Screen with cursor

Hi folks,

I also have this issue when downloading flv files. What has worked in terms of recovering the screen is to press Cmd + Esc (this will show the Front row Media screen)... wait for it. When the Frontrow screen appears press Esc to go back to the video.

I am experiencing limited success with this since the black screen occasionally reappears. If this presents more problems I will dig into the system logs for clues. If I skip downloading videos I do not have a problem. I have also tried running videos in Private Browsing mode on Firefox with the same results.

I have the same problem, whatever the website of the video...

Thanks to the advice, but the bug is not repaired.

Guys.....Cool it....

Get a Beer, a Coke or whatever....

There's always an alternative....I am using Folx for mac....it's working pretty well downloading the stuffs for me.

newhouseent
Macs are still computers....made up of circuit boards and so on. Mac simplifies the ease of use. We can't expect 100% from everything...do you? That's why this discussion forum have users from everywhere to help one another.

As for all the problems, can anyone provide a error console as a reference before we start jumping to conclusions that "It's a Mac fault"?

This happens to me, and I can tell you its NOT download helper. I don't have this app installed.

It only happens when I try to convert a video using Quicktime Pro or Adobe Media Converter, and only when I'm converting to an flv file. No other file format has this issue.

This is ONLY since installing Snow Leopard. I think it is a quicktime issue. I also have flip for mac installed, and I'm going to try and disable it and try again.

I can reproduce this black screen error using the following applications:

Adobe Media Player (powered by Adobe Air)

Toast 9 (Most recent version)

In Adobe Air, open a large FLV that's been partially downloaded. Skip halfway, try to go back. Black screen.

In Toast 9, find yourself a VIDEO-TS folder that you want burned to a DVD. With the appropriate options in Toast for burning VIDEO-TS folders, proceed with the burn. The screen will 'minimize' to it's usual burn progress window, and then it'll black screen.

What's even stranger is, I have three displays. Adobe Media Player only ever crashes the middle display as I can continue to work on the other two.

Toast on the other hand, crashes the far left display (that's powered by a completely different graphics card than the other two).

Strangely obscure Snow Leopard bug.

Just came across this problem today using Downloadhelper, but from reading the above posts, it clearly has something to do with FLVs and Snow Leopard.

Only my MBP screen went out as my second monitor continued to work fine. I was able to get out of the black screen by disconnecting my second monitor and reconnecting it, but people have already listed several easier methods above. (Activating the screensaver, flipping to negative colors, starting Front Row, etc.)

Happened to me while downloading a .flv file from someone via Yahoo Messenger , the download was to "Desktop" ... happens 3-4 seconds after the download starts.

Maybe it has something to do with some Adobe component and not SL ?

I just experienced the same exact issue a couple times: Black screen except for the curser.

In each instance I was downloading .FLV files using Firefox and DownloadHelper. As has already been mentioned this does not necessarily mean DownloadHelper is the culprit.

Many people are experiencing this problem while using DownloadHelper, but not in EVERY case. Which leads me to believe the problem has a deeper source, possibly QTKitServer, but at this point it's hard to say.

In any case, I'm certainly relieved to know that there is nothing wrong with my Mac, and the large amount of people experiencing this issue should help motivate a quick solution, once it's been determined exactly where the problem originates.
It's good to have a place like this where I can immediately access info about any problem I'm having. (With my Mac : )

We may be closing in on the source of the "black screen" problem.
Others have mentioned getting the black screen while downloading to either the Desktop or to a folder which is open at the time of the download. In both cases the file is visible in the Finder, so your Mac will attempt to create preview thumbnails of the video on the fly, (before the download is complete).

As previously mentioned in this thread, the problem can be avoided by downloading the videos to a closed folder, so no preview is needed until the download is finished. This workaround did work in my case.

So if this preview issue is the source of the black screen bug, that would explain why the problem also occurs for people who are NOT using DownloadHelper. It may indeed be an issue with the way Snow Leopard handles .FLV previews.

Does anyone have any new info that confirms or rejects this idea?

For what it's worth, the same thing happens to me when I use Downloadhelper on Firefox 3.5.5. I thought that my mac actually caught a virus when it initially happened! But it happens for me when I try to download a flv to my desktop. My screen goes black and I can only maneuver my mouse until I have to force a reboot. Performance of Macs are slowly slipping...I hope Apple attends to this.

I have the same problem. Control, Option, Command and 8 fixes it indeed. But I just got it back from apple service and they changed the logic board. It seems it was not that problem at all as we thought before.

And I do not use firefox, I do not download flv. So this is absolutely not a software related issue. What should I do now?

Sometimes it happens more than 5 times within an hour. I was burning a dvd and compressing an ISO file to xvid when it happened last.

I got black screen with cursor many times when is running encoding under Handbrake.

But sometimes popped error report:


Process: QTKitServer [2828]
Path: /System/Library/Frameworks/QTKit.framework/Resources/QTKitServer
Identifier: QTKitServer
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: quicklookd [2813]

Date/Time: 2009-11-15 00:42:59.391 +0100
OS Version: Mac OS X 10.6.2 (10C540)
Report Version: 6

Interval Since Last Report: 246374 sec
Crashes Since Last Report: 21
Per-App Crashes Since Last Report: 18
Anonymous UUID: 7BBF0865-8AB5-4049-8421-F2B34B739D07

Exception Type: EXC BADACCESS (SIGBUS)
Exception Codes: KERN PROTECTIONFAILURE at 0x0000000001910000
Crashed Thread: 4

Thread 0: Dispatch queue: com.apple.main-thread
0 ...ple.CoreServices.CarbonCore 0x93de835b TSSignalSemaphore + 195
1 ...ickTimeComponents.component 0x97d198a0 RSFinish + 87
2 ...ickTimeComponents.component 0x97d1842e SDH_ScheduleData64 + 640
3 ...ple.CoreServices.CarbonCore 0x93e1ba81 callComponentStorage_4444444 + 63
4 ...ple.CoreServices.CarbonCore 0x93e10474 CallComponentFunctionCommonWithStorage(char**, ComponentParameters*, long (*)(), unsigned long) + 54
5 ...ickTimeComponents.component 0x97d15256 SDH_ComponentDispatch + 143
6 ...ple.CoreServices.CarbonCore 0x93e08b06 CallComponentDispatch + 29
7 com.apple.QuickTime 0x92b8dd19 DataHScheduleData64 + 73
8 org.perian.Perian 0x129bda2b dataref_read + 139

Thread 1:
0 libSystem.B.dylib 0x931770ea kevent + 10
1 QTKitServer 0x0001f7d5 listenForProcessDeath + 156
2 libSystem.B.dylib 0x9317dfbd pthreadstart + 345
3 libSystem.B.dylib 0x9317de42 thread_start + 34

Thread 2: Dispatch queue: com.apple.libdispatch-manager
0 libSystem.B.dylib 0x931770ea kevent + 10
1 libSystem.B.dylib 0x93177804 dispatch_mgrinvoke + 215
2 libSystem.B.dylib 0x93176cc3 dispatch_queueinvoke + 163
3 libSystem.B.dylib 0x93176a68 dispatch_workerthread2 + 234
4 libSystem.B.dylib 0x931764f1 pthreadwqthread + 390
5 libSystem.B.dylib 0x93176336 start_wqthread + 30

Thread 3:
0 libSystem.B.dylib 0x93176182 _workqkernreturn + 10
1 libSystem.B.dylib 0x93176718 pthreadwqthread + 941
2 libSystem.B.dylib 0x93176336 start_wqthread + 30

Thread 4 Crashed:
0 libSystem.B.dylib 0xffff061a __bzero + 26
1 ...ickTimeComponents.component 0x97d1bfc0 ReadSchedulerThreadEntryPoint + 4581
2 libSystem.B.dylib 0x9317dfbd pthreadstart + 345
3 libSystem.B.dylib 0x9317de42 thread_start + 34

Thread 5:
0 libSystem.B.dylib 0x9315093a semaphore timedwait_signaltrap + 10
1 libSystem.B.dylib 0x9317e445 pthread_condwait + 1066
2 libSystem.B.dylib 0x931ad028 pthread cond_timedwait_relativenp + 47
3 ...ple.CoreServices.CarbonCore 0x93de8235 TSWaitOnConditionTimedRelative + 242
4 ...ple.CoreServices.CarbonCore 0x93de7f73 TSWaitOnSemaphoreCommon + 511
5 ...ple.CoreServices.CarbonCore 0x93e42508 AIOFileThread(void*) + 1127
6 libSystem.B.dylib 0x9317dfbd pthreadstart + 345
7 libSystem.B.dylib 0x9317de42 thread_start + 34

Thread 4 crashed with X86 Thread State (32-bit):
eax: 0x00000000 ebx: 0x97d1adec ecx: 0x00000000 edx: 0xff74f724
edi: 0x01910000 esi: 0x002264e0 ebp: 0xb0206e48 esp: 0xb0206e44
ss: 0x0000001f efl: 0x00010286 eip: 0xffff061a cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x0000001f gs: 0x00000037
cr2: 0x01910000

Binary Images:
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0x51a000 - 0x56ffdf +com.DivXInc.DivXDecoder 6.8.3.5 (6.8.3.5) /Library/QuickTime/DivX Decoder.component/Contents/MacOS/DivX Decoder
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0x95f19000 - 0x95f26ff7 com.apple.opengl 1.6.5 (1.6.5) <0AE8B897-8A80-2C14-D6FC-DC21AC423234> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
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0x96005000 - 0x96328fef com.apple.HIToolbox 1.6.2 (???) <E02640B9-7BC3-A4B4-6202-9E4127DDFDD6> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.fra mework/Versions/A/HIToolbox
0x96329000 - 0x96334ff7 libCSync.A.dylib ??? (???) <9292E6E3-70C1-1DD7-4213-1044F0FA8381> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
0x96335000 - 0x96461fe3 com.apple.audio.toolbox.AudioToolbox 1.6.1 (1.6.1) <C226DF5C-35B0-98B8-95ED-FE5FE24E62C8> /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox
0x96462000 - 0x96468fff com.apple.CommonPanels 1.2.4 (91) <2438AF5D-067B-B9FD-1248-2C9987F360BA> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CommonPanels. framework/Versions/A/CommonPanels
0x96645000 - 0x96645ff7 com.apple.Cocoa 6.6 (???) <EA27B428-5904-B00B-397A-185588698BCC> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
0x96646000 - 0x966a0ff7 com.apple.framework.IOKit 2.0 (???) <1BE07087-27D5-0E62-F06B-007C2BED4073> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x966a1000 - 0x966eefeb com.apple.DirectoryService.PasswordServerFramework 6.0 (6.0) <BF66BA5D-BBC8-78A5-DBE2-F9DE3DD1D775> /System/Library/PrivateFrameworks/PasswordServer.framework/Versions/A/PasswordS erver
0x9687f000 - 0x96890ff7 com.apple.LangAnalysis 1.6.6 (1.6.6) <7A3862F7-3730-8F6E-A5DE-8E2CCEA979EF> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ LangAnalysis.framework/Versions/A/LangAnalysis
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0x97120000 - 0x97130ff7 libsasl2.2.dylib ??? (???) <C8744EA3-0AB7-CD03-E639-C4F2B910BE5D> /usr/lib/libsasl2.2.dylib
0x97131000 - 0x9714cff7 libPng.dylib ??? (???) <3F8682CD-C05B-607D-96E7-767646C77DB8> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libPng.dylib
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0x97334000 - 0x973c5fe7 com.apple.print.framework.PrintCore 6.1 (312.3) <6D4322AF-703C-CC19-77B4-53E6D3BB18D4> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ PrintCore.framework/Versions/A/PrintCore
0x973c6000 - 0x97462fe7 com.apple.ApplicationServices.ATS 4.1 (???) <EA26375D-8276-9671-645D-D28CAEC95292> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ATS.framework/Versions/A/ATS
0x97463000 - 0x97512fe3 com.apple.QuickTimeImporters.component 7.6.3 (1591.3) <2E2381EB-5E5E-B714-C65D-FCE349E77094> /System/Library/QuickTime/QuickTimeImporters.component/Contents/MacOS/QuickTime Importers
0x97513000 - 0x97517ff7 libGFXShared.dylib ??? (???) <79F4F60E-0A6D-CE9C-282E-FA85825449E3> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGFXShared.d ylib
0x97719000 - 0x986a7ff7 com.apple.QuickTimeComponents.component 7.6.3 (1591.3) /System/Library/QuickTime/QuickTimeComponents.component/Contents/MacOS/QuickTim eComponents
0x986ef000 - 0x986f2ffb com.apple.help 1.3.1 (41) <67F1F424-3983-7A2A-EC21-867BE838E90B> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Help.framewor k/Versions/A/Help
0x98705000 - 0x98747fe7 libvDSP.dylib ??? (???) <8F8FFFB3-81E3-2969-5688-D5B0979182E6> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libvDSP.dylib
0x9877b000 - 0x98797fe3 com.apple.openscripting 1.3.1 (???) <DA16DE48-59F4-C94B-EBE3-7FAF772211A2> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/OpenScripting .framework/Versions/A/OpenScripting
0x9880d000 - 0x988e7ff3 com.apple.DesktopServices 1.5.3 (1.5.3) <DA02AC94-7B0C-BD75-2305-C46A307A5FB0> /System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/Desk topServicesPriv
0x988e8000 - 0x98cfeff7 libBLAS.dylib ??? (???) <C4FB303A-DB4D-F9E8-181C-129585E59603> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libBLAS.dylib
0x98cff000 - 0x98cffff7 com.apple.Accelerate.vecLib 3.5 (vecLib 3.5) <3E039E14-2A15-56CC-0074-EE59F9FBB913> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/vecLib
0x98d00000 - 0x98d49fe7 libTIFF.dylib ??? (???) <5864AE5B-EAEB-F8B6-18FB-3D27B7895A4C> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libTIFF.dylib
0x98d83000 - 0x98d97fe7 libbsm.0.dylib ??? (???) <14CB053A-7C47-96DA-E415-0906BA1B78C9> /usr/lib/libbsm.0.dylib
0x98ef5000 - 0x98f92fe3 com.apple.LaunchServices 362 (362) <8BE1C1A1-BF71-CE07-F3FB-6057D47AF461> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchS ervices.framework/Versions/A/LaunchServices
0x98fd5000 - 0x9901bff7 libauto.dylib ??? (???) <85670A64-3B67-8162-D441-D8E0BE15CA94> /usr/lib/libauto.dylib
0x9922f000 - 0x99230ff7 com.apple.audio.units.AudioUnit 1.6.1 (1.6.1) <3A08510C-07F7-1A09-D6ED-1A488203ACCC> /System/Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit
0x99231000 - 0x992a0ff7 libvMisc.dylib ??? (???) <59243A8C-2B98-3E71-8032-884D4853E79F> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libvMisc.dylib
0x992a1000 - 0x992a5ff7 IOSurface ??? (???) <C11D3FF3-EB51-A07D-EF24-9C2004115724> /System/Library/Frameworks/IOSurface.framework/Versions/A/IOSurface
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0xffff0000 - 0xffff1fff libSystem.B.dylib ??? (???) <D45B91B2-2B4C-AAC0-8096-1FC48B7E9672> /usr/lib/libSystem.B.dylib

Model: MacBookPro5,1, BootROM MBP51.0074.B01, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.33f8
Graphics: NVIDIA GeForce 9600M GT, NVIDIA GeForce 9600M GT, PCIe, 256 MB
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: global_name
AirPort: spairport wireless_card_type_airportextreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.10.91.19)
Bluetooth: Version 2.2.4f3, 2 service, 0 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: SAMSUNG HM500LI, 465,76 GB
Serial ATA Device: MATSHITADVD-R UJ-868, 589,3 MB
USB Device: USB to ATA/ATAPI Bridge, 0x152d (JMicron Technology Corp.), 0x2329, 0x24100000
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24400000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0x04600000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x04500000
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8213, 0x06110000

I too have this issue with .flv files. Seems to me like the GPU just switches of for some reason, because the system doesn't crash. If I put my Mac to sleep and wake it up again, the screen comes back on.

I love how upset some people are getting at a plug-in. Specifically, a plug-in that allows one to download videos AGAINST the will (usage rights) of the hosting website. Be all end all, is that you are not supposed to be able to download these videos at all. Thanks to a handy plug-in, we can. It's a bummer the screen goes black. It's a bug, and I am sure they will work to fix it. Why would they want to have buggy software out there...

Getting mad at the developer and wanting to sue them is like wanting to sue Lexus because you stole a car and crashed it. Calm down and rethink your priorities in life...

Hey guys 🙂
I faced today the same problem for the first time (which is strange, 'cos I've been using SL daily since 29th August). At first I didn't know what to do, so I closed the lid, opened after successfuly going to sleep mode and everything was back and running. Then I googled the issue and found this thread. I checked the Front Row solution and it worked great. Then I started testing and testing, checking the Console, because I found the certain thing, causing the black screen everytime I liked, which was downloading any FLV video tutorial from gotoAndLearn ( http://www.gotoandlearn.com) website - so the older one (new one are MOV and everything's ok), by clicking DOWNLOAD button with Option key down, saving straightly to Desktop. 100% blackout :P Cmd+8 helping all the time.

So, with this possibility to test it, I found that every black screen causes saving crash report for QTKitServer version ??? (???) to user logs. And only this. I checked the report and it had something to do with Perian.
Once again I googled the thing by searching for "Perian" and "QTKitServer" and first match revealed the ticket to Perian devs with description of the same issue ( http://trac.perian.org/ticket/446). User cheungpat wrote there something that caught my interest: "QTKitServer only crashes when Perian.component is in /Library/QuickTime. If I remove Perian.component QTKitServer doesn’t crash again."
And it turned out to be true. Without Perian.component my 100% blackout turned to 0%.
Other informations provided by cheungpat in his ticket tells that he was using 1.1.4 Perian component (so the latest) on 10.6.1.
I have 1.1.4 also, but 10.6.2 at the same time, so it looks like general 1.1.4 vs Snow Leopard Perian's issue.

Now stop blaming Firefox's plug-ins and start praying for Perian devs to fix the issue and release new update 😀