Black Screen During Installation on Lenovo x230t Chimera

[kaleaves]

It is clearly installed as per your kextcache output:

kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext realtekALC.kext

After enter this code what should I do?

 

[RehabMan]

After enter this code what should I do?

The code is nothing to enter. It just shows me all the unsigned kexts that you installed. It proves your claim that you didn't install realtekALC.kext false.

Read the FAQ for information on obtaining an AppleHDA that matches your own codec. Then read the (linked) ACPI patching guide to know how to patch your DSDT correctly for the AppleHDA you created or obtained.

And don't forget to remove realtekALC.kext.

 

[kaleaves]

The code is nothing to enter. It just shows me all the unsigned kexts that you installed. It proves your claim that you didn't install realtekALC.kext false.

Read the FAQ for information on obtaining an AppleHDA that matches your own codec. Then read the (linked) ACPI patching guide to know how to patch your DSDT correctly for the AppleHDA you created or obtained.

And don't forget to remove realtekALC.kext.

lvesde-MacBook-Pro:~ lves$ kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext realtekALC.kext
-bash: kext-dev-mode: command not found

Also I don't find realtekALC.kext

Once I reboot, audio can be recognize but only 3.5mm have signal. Than reboot again all signal lost.

 

[RehabMan]

lvesde-MacBook-Pro:~ lves$ kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext realtekALC.kext
-bash: kext-dev-mode: command not found

Also I don't find realtekALC.kext

You installed it either to /Library/Extensions or /System/Library/Extensions.

If you are not aware of where you installed things or how they got there, do a fresh install.

 

[kaleaves]

You installed it either to /Library/Extensions or /System/Library/Extensions.

If you are not aware of where you installed things or how they got there, do a fresh install.

I found realtek.kext in /Library/Extensions and delete it but still no signal. Than I drop AppleHDA.kext into /Library/Extensions but it pop up error message that kext cannot be use

lvesde-MacBook-Pro:~ lves$ kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext realtekALC.kext
-bash: kext-dev-mode: command not found
lvesde-MacBook-Pro:~ lves$  kextstat|grep -y acpiplat
   13    2 0xffffff7f8250b000 0x66000    0x66000    com.apple.driver.AppleACPIPlatform (4.0) A29C7512-D3A8-3AED-9721-3A5FF1A32EB2 <12 11 7 6 5 4 3 1>
lvesde-MacBook-Pro:~ lves$ kextstat|grep -y appleintelcpu
   21    0 0xffffff7f8231e000 0x2b000    0x2b000    com.apple.driver.AppleIntelCPUPowerManagement (218.0.0) 368B709A-9135-3951-95AC-1551B19381B2 <7 6 5 4 3 1>
   28    0 0xffffff7f82319000 0x3000     0x3000     com.apple.driver.AppleIntelCPUPowerManagementClient (218.0.0) 99C8A694-575D-32C8-B319-1BB8F5518D97 <7 6 5 4 3 1>
lvesde-MacBook-Pro:~ lves$ kextstat|grep -y applelpc
   95    0 0xffffff7f8210b000 0x3000     0x3000     com.apple.driver.AppleLPC (3.1) 32BDCF9F-0473-32D4-9DAE-F523EFB2D244 <76 12 5 4 3>
lvesde-MacBook-Pro:~ lves$ kextstat|grep -y applehda
lvesde-MacBook-Pro:~ lves$ sudo touch /System/Library/Extensions && sudo kextcache -u /
Password:
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext IntelBacklight.kext
/Library/Extensions/AppleHDA.kext/Contents/PlugIns/IOHDAFamily.kext is not authentic; omitting from prelinked kernel.
Can't use IOHDAFamily.kext - not linked.
Prelink failed for com.apple.driver.AppleHDAController; omitting from prelinked kernel.

 

[RehabMan]

I found realtek.kext in /Library/Extensions and delete it but still no signal. Than I drop AppleHDA.kext into /Library/Extensions but it pop up error message that kext cannot be use

lvesde-MacBook-Pro:~ lves$ kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext realtekALC.kext
-bash: kext-dev-mode: command not found
lvesde-MacBook-Pro:~ lves$  kextstat|grep -y acpiplat
   13    2 0xffffff7f8250b000 0x66000    0x66000    com.apple.driver.AppleACPIPlatform (4.0) A29C7512-D3A8-3AED-9721-3A5FF1A32EB2 <12 11 7 6 5 4 3 1>
lvesde-MacBook-Pro:~ lves$ kextstat|grep -y appleintelcpu
   21    0 0xffffff7f8231e000 0x2b000    0x2b000    com.apple.driver.AppleIntelCPUPowerManagement (218.0.0) 368B709A-9135-3951-95AC-1551B19381B2 <7 6 5 4 3 1>
   28    0 0xffffff7f82319000 0x3000     0x3000     com.apple.driver.AppleIntelCPUPowerManagementClient (218.0.0) 99C8A694-575D-32C8-B319-1BB8F5518D97 <7 6 5 4 3 1>
lvesde-MacBook-Pro:~ lves$ kextstat|grep -y applelpc
   95    0 0xffffff7f8210b000 0x3000     0x3000     com.apple.driver.AppleLPC (3.1) 32BDCF9F-0473-32D4-9DAE-F523EFB2D244 <76 12 5 4 3>
lvesde-MacBook-Pro:~ lves$ kextstat|grep -y applehda
lvesde-MacBook-Pro:~ lves$ sudo touch /System/Library/Extensions && sudo kextcache -u /
Password:
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext IntelBacklight.kext
/Library/Extensions/AppleHDA.kext/Contents/PlugIns/IOHDAFamily.kext is not authentic; omitting from prelinked kernel.
Can't use IOHDAFamily.kext - not linked.
Prelink failed for com.apple.driver.AppleHDAController; omitting from prelinked kernel.

You cannot install kexts with Finder. You must use a kext installer or use Terminal (sudo cp -R).

 

[kaleaves]

You cannot install kexts with Finder. You must use a kext installer or use Terminal (sudo cp -R).

I used kext utility to install AppleHDA in /System/Library/Extensions than it pop up error message so what should I do

 

[RehabMan]

I used kext utility to install AppleHDA in /System/Library/Extensions than it pop up error message so what should I do

Once you've installed it incorrectly, you have to remove it, then install correctly...

 

[kaleaves]

Once you've installed it incorrectly, you have to remove it, then install correctly...

I don't have any other option of destination in Kext Wizard

 

[RehabMan]

I don't have any other option of destination in Kext Wizard

Why should that matter? Patched AppleHDA.kext must be installed to /System/Library/Extensions.