Thread: Blackscreen after installing Snow Leopard...

Hi Folks

I have a problem, I installes snowleopard everything seemed to be fine but now when i try to boot from cd after the Grey apple screen the display turns off but the intro muisc is playing.... I use an dvi to vga adapter and i also tryed the other dvi port of my grafik card...

What can i try?

Booting with -x doesnt work.....

Originally Posted by komerzgandalf

Hi Folks

I have a problem, I installes snowleopard everything seemed to be fine but now when i try to boot from cd after the Grey apple screen the display turns off but the intro muisc is playing.... I use an dvi to vga adapter and i also tryed the other dvi port of my grafik card...

What can i try?

Try booting with the flag`s below...

arch=i386 -v

If don`t work try...

-x -v

And if anything works, boot in Single User Mode ( -s ) when you stop at the "root$" prompt run the commands below...

Code:

touch /var/db/.AppleSetupDone

reboot

Boot up in verbose mode only ( -v)...

All the three methods dont work...


The first time when i installed snow leopard, changing to the other dvi port was the solution to get no black screen... This time after reinstallation(same pc) this doesnt work....

Originally Posted by komerzgandalf

All the three methods dont work...


The first time when i installed snow leopard, changing to the other dvi port was the solution to get no black screen... This time after reinstallation(same pc) this doesnt work....

You told that this happens when you boot from CD...

What happens when you boot from HD ??? And also what Chameleon version you are using???

Try this...

Boot in Single User Mode ( -s ) and run the commands below...

Code:

cp -R /System/Library/Extensions /System/Library/Extensions.backup

rm -rf /System/Library/Extensions/ATI*

chown -R 0:0 /System/Library/Extensions/*

chmod -R 755 /System/Library/Extensions/*

kextcache -v 3 -a i386 -a x86_64 -m /System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext -z /System/Library/Extensions

reboot

if with this step you can reach the desktop, just tell me and we will go to the next step...

Like i said the last time, when i install sl changing the dvi port was the solution, but for some reason, without changing anything i got the blackscreen issue from one day to another.... There i used the chameleon loader 2 rc4

And now i got the blackscreen after installing i never been to the desktop, i cant install chameleon, without reaching desktop, right?


Ok now i tray this command and then i post what happend

Originally Posted by komerzgandalf

...i cant install chameleon, without reaching desktop, right?

I ask this because i don`t know what kind of installation you made (Distro or Retail)...

On Distro install you can install the Bootloader without reach the desktop...

Originally Posted by komerzgandalf

Ok now i tray this command and then i post what happend

If with the steps above you can reach the desktop, install again the ATI kexts from your Extensions.backup folder and use
Multibeast Chimera as bootloader...

Sooooo



I typed in this realy long command string and there comes a lot of lines..... But also it didnt work..... Same issue blackscreen and intro sound....

And i did the retail installation i dont know the distro installation....


I hope you know something else......

Originally Posted by komerzgandalf

Sooooo



I typed in this realy long command string and there comes a lot of lines..... But also it didnt work..... Same issue blackscreen and intro sound....

And i did the retail installation i dont know the distro installation....


I hope you know something else......

You have sure that you remove all the ATI kexts with the command " rm -rf /System/Library/Extensions/ATI* "....

If you remove all video kexts and rebuild the caches... It`s strange that you already have video issues...

If you have sure that you remove susses fully all ATI kexts, try removing all video kexts with the commands below...

Code:

rm -rf /System/Library/Extensions/ATI*

rm -rf /System/Library/Extensions/GeFor*

rm -rf /System/Library/Extensions/NV*

reboot

And boot Ignoring Caches ( -f )

Ok now i tryed all you commands but same problem, but when i rebuild cache there was unable to chande mode or something....


Also after these commands i tryed to change the dvi pot but no change....what is this....


And it worked one week before, can i install an other way or something?????

Originally Posted by komerzgandalf

Ok now i tryed all you commands but same problem, but when i rebuild cache there was unable to chande mode or something....


Also after these commands i tryed to change the dvi pot but no change....what is this....


And it worked one week before, can i install an other way or something?????

What BootCD you are using???