Black Screen of Death hits again

Hello Guys

Trying to update ML with YOS following this tutorial i get so far and my screen goes off / black?

I have tried several flags -x -v GraphicsEnabler=No & -x -v GraphicsEnabler=Yes but my screens just goblack and off??????

I have no idea why it is failing or what on as i cannot see the error before it shuts down.

Would really like some guidance please

The only thing i can add by memory i have 2 GC both same make & model and when i installed ML; some great guy in the old chat room talked me through making a kext to support both cards. But i cannot remeber anything else about it now sorry.

thorrrr said:

Hello Guys

Trying to update ML with YOS following this tutorial i get so far and my screen goes off / black?

I have tried several flags -x -v GraphicsEnabler=No & -x -v GraphicsEnabler=Yes but my screens just goblack and off??????

I have no idea why it is failing or what on as i cannot see the error before it shuts down.

Would really like some guidance please

The only thing i can add by memory i have 2 GC both same make & model and when i installed ML; some great guy in the old chat room talked me through making a kext to support both cards. But i cannot remeber anything else about it now sorry.

Click to expand...

Just give a try with "PCIRootUID=1 nv_disable=1 -f"

Hi Jithin


Thank you for your reply; your flags worked. Without getting too drawn out; I now have another issue.
I use the flags and was able to load Yosemite over Mountain Lion after the tutorial. The issue arises when I get down to number 8.
Even though I have installed Yosemite but I cannot boot from the main SSD drive. I can boot from USB and select the drive. By using the flags provided I am able to login to your Yosemite I then used Multibeast with the options.

When I first logged into Yosemite my system looked fine Audio was not working but I expected that; but Network was fine. My graphics were supporting my multi monitor’s and looked good.
I choose the correct settings from Multibeast for Audio and those shown in the tutorial. I tried rebooting from the SSD but it would not work even with flags just goes to the Apple grey screen with an empty loader bar and sticks there doing nothing.

I can only boot from my SSD via my USB???? I have to use the flags when I got back in my system looked trashed from Multibeast. I lost monitor support down to 1 monitor screen was flashing.
Unable to use Chrome the browser I guess it due to graphics mess up. So I am in a real mess . I have tried using the DSDT for my motherboard as it is on the list re ran Multibeast buy same errors.

In short
I have Yosemite installed but can only access via the SSD from my USB and when it loads I have part grey loader screen then changes into black screen with white loader bar before arriving at Yosemite login screen.
I have poor graphics and my monitor’s and resolution I am not abler to alter. Not sure if I have screwed up doing this but followed it to the word.
Not sure if it helps I have Time machine files from when I had ML on a separate drive.
Please help

thorrrr said:

In short
I have Yosemite installed but can only access via the SSD from my USB and when it loads I have part gret loader screen then changes into black screen with white loader bar before arriving at Yosemite login screen.
I have poor graphics and my monitor’s and resolution I am not abler to alter. Not sure if I have screwed up doing this but followed it to the word.
Not sure if it helps I have Time machine files from when I had ML on a separate drive.
Please help

Click to expand...

If using Chimera as boot loader and installing Yosemite over Mavericks, copy DSDT if you have one to desktop. Delete the /Extra folder, reboot with USB, select OS X icon, use boot flags you used before with addition of -f to force the system re reload all kexts from scratch and rebuild the caches. Run MultiBeast with UserDSDT and audio+networking selections. Reboot

Hi Going Bald

Cheers for your reply i have tried it 3 times and still same issue.

Cannot boot from SSD even with flags!

I can boot from SSD via USB only and it still looks poor very slow and screen flashing struggling to render i cannot even run Chrome. Multibeast will run and i followed your instructions but it will just not boot from SSD.

FYI this is a seperate SSD just for OSX

Cheers

thorrrr said:

Hi Going Bald

Cheers for your reply i have tried it 3 times and still same issue.

Cannot boot from SSD even with flags!

I can boot from SSD via USB only and it still looks poor very slow and screen flashing struggling to render i cannot even run Chrome. Multibeast will run and i followed your instructions but it will just not boot from SSD.

FYI this is a seperate SSD just for OSX

Cheers

Click to expand...

open Finder->Extra->org.chameleon.boot.plist in editor of your choice.
delete the internal gfx=yes key/string totally - you are using discrete GPUs
for the 8800GS edit Graphics Enabler=No to GE=Yes, save, control+Q to quit editor. Reboot -f -v & report results

HI

My boot.plist does not have the gfx

<?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>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>GraphicsEnabler</key>
<string>No</string>
<key>HDAEnabler</key>
<string>Yes</string>
<key>HDEFLayoutID</key>
<string>01000000</string>
<key>IGPEnabler</key>
<string>Yes</string>
<key>Kernel Flags</key>
<string>kext-dev-mode=1</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>2</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>

I have changed it to this and i am now seeing 2 monitiors but the colours are all blown out see images. ALso can still not boot from SSD i had to boot from USB SSD with -f -v flags

<?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>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>HDAEnabler</key>
<string>Yes</string>
<key>HDEFLayoutID</key>
<string>01000000</string>
<key>IGPEnabler</key>
<string>Yes</string>
<key>Kernel Flags</key>
<string>kext-dev-mode=1</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>2</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>

Really could do with some help guys struggling to work out my Graphics Cards an dhow to get it to boot directly from the SSD without using the USB.

Cheers

thorrrr said:

Really could do with some help guys struggling to work out my Graphics Cards an dhow to get it to boot directly from the SSD without using the USB.

Cheers

Click to expand...

<key>HDEFLayoutID</key>
<string>01000000</string>
<key>IGPEnabler</key>
<string>Yes</string>

Try removing the lines highlighted in bold text from your org.chameleon.Boot.plist

P1LGRIM said:

<key>HDEFLayoutID</key>
<string>01000000</string>
<key>IGPEnabler</key>
<string>Yes</string>

Try removing the lines highlighted in bold text from your org.chameleon.Boot.plist

Click to expand...

Hello P1LGRIM tried that; same issues nothing changed!!!!!!!



<?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>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>HDAEnabler</key>
<string>Yes</string>
<key>HDEFLayoutID</key>
<string>01000000</string>
<key>Kernel Flags</key>
<string>PCIRootUID=1</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>2</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>

What can i do next ????