Black Screen After 10.10.3 update

[biggnou]

Disable the graphics injections as below,

<key>GraphicsEnabler</key>
<string>No</string>

<key>IGPEnabler</key>
<string>No</string>

Then Clear NVRAM and check the booting.

Edited chameleon plist.

Tried to clear NVRAM with pressing Cmd + Opt + P + R but not sure if it worked at all. Am I doing this well?

At boot, same thing occurs: monitor goes to power saving mode.

 

[Jithin.C.V]

Edited chameleon plist.

Tried to clear NVRAM with pressing Cmd + Opt + P + R but not sure if it worked at all. Am I doing this well?

At boot, same thing occurs: monitor goes to power saving mode.

nvram -c

Repair disk permissions and rebuild caches using kext wizard. Then reboot and check.

 

[TheLnxDrd]

Still nothing..

 

[cimes]

Make nvram -c
repair partition

but after reboot also black screen and after 5 sec. I see Skype loading sound, but monitor
n black screen

Only load os width nv_disable=1


SORRY FOR MY ENGLISH PLEASE!!

 

[Jithin.C.V]

Still nothing..

Have you tried post#32 steps??

 

[cimes]

What to try?

 

[TheLnxDrd]

Have you tried post#32 steps??

I have and still no difference

 

[Jithin.C.V]

Without any driver support, graphics card is providing output. But while trying to use the native driver, system is booting fine but you are not getting any output from the GFX card. It seems like it is loading the web drivers (Not sure) instead of OS X driver.

Try booting with "nvda_drv=0 -f".

 

[Jithin.C.V]

I have and still no difference

For you try with "dart=0 PCIRootUID=1 nvda_drv=1 -f"

 

[biggnou]

nvram -c

Repair disk permissions and rebuild caches using kext wizard. Then reboot and check.

Still the same

In another thread you help on, someone with a Radeon card had to change his AMDRadeonX4000.kex. Apparently something was changed with the upgrade. Could it be the same here?