Indigo iMac Posted June 17, 2011 Share Posted June 17, 2011 I am using a Toshiba Tecra M5. I installed Mac OS 10.6 to an external usb drive, and after OS X has finished booting it goes to a black screen. What is causing this? Could it be related to the Nvidia drivers? Link to comment https://www.insanelymac.com/forum/topic/259561-black-screen-after-boot/ Share on other sites More sharing options...
ARFIRST Posted June 18, 2011 Share Posted June 18, 2011 I have the SAME problem. Monitor light is green. I'm using VGa output and DVI, same problem. Could it bth video cards? I'm using an IBM Lenovo Core Duo Link to comment https://www.insanelymac.com/forum/topic/259561-black-screen-after-boot/#findComment-1699758 Share on other sites More sharing options...
TIMMAYOSX Posted June 18, 2011 Share Posted June 18, 2011 When I had this problem, it was related to the nvidia card being partially recognized. What resolved the issue for me was to remove all NVInjectors or enablers, and simply use GraphicsEnabler=Yes via Chameleon or derivatives. If this does not work for you, you can test that this is the actual issue by removing or backing up /S/L/E/NV* which should allow your system to boot up normally, but without acceleration. Link to comment https://www.insanelymac.com/forum/topic/259561-black-screen-after-boot/#findComment-1699760 Share on other sites More sharing options...
ARFIRST Posted June 18, 2011 Share Posted June 18, 2011 When I had this problem, it was related to the nvidia card being partially recognized. What resolved the issue for me was to remove all NVInjectors or enablers, and simply use GraphicsEnabler=Yes via Chameleon or derivatives. If this does not work for you, you can test that this is the actual issue by removing or backing up /S/L/E/NV* which should allow your system to boot up normally, but without acceleration. I'm sorry i'm new to all this, I have some questions Basically the GraphicsEnabler=Yes I type it when it says boot= (you know where u can type -v -f) ? "emoving or backing up /S/L/E/NV* " how can I do that? Link to comment https://www.insanelymac.com/forum/topic/259561-black-screen-after-boot/#findComment-1699762 Share on other sites More sharing options...
TIMMAYOSX Posted June 18, 2011 Share Posted June 18, 2011 Yes, you can simply type GraphicsEnabler=Yes at the boot= prompt, or add it to your /Extra/com.apple.Boot.plist file (recommended method) My com.apple.Boot.plist looks like this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Kernel</key> <string>mach_kernel</string> <key>Timeout</key> <string>5</string> <key>Kernel Flags</key> <string></string> <key>Graphics Mode</key> <string>1024x768x32</string> <key>GraphicsEnabler</key> <string>y</string> <key>PciRoot</key> <string>1</string> </dict> </plist> Note that this will boot in 64-bit mode, but if your are using GeForce 7xxx or lower, you will need to boot in 32-bit mode. To do this, add <string>arch=i386</string> under Kernel Flags in the plist mentioned above. To delete the stock nvidia drivers, as a test to see if this is the issue you are having, you can do this from within the terminal sudo -s ## ^^^ will prompt for your password mkdir -p /ExtensionsBackup cp -a /System/Library/Extensions/NV* /ExtensionsBackup rm -rf /System/Library/Extensions/NV* You do not need to rebuild your kext caches when deleting extensions, so you can safely shutdown and reboot now. Link to comment https://www.insanelymac.com/forum/topic/259561-black-screen-after-boot/#findComment-1699766 Share on other sites More sharing options...
Recommended Posts