[solved] Startup brightness zero hd615

asusceleron · Mar 27, 2017

If I use the IntelBacklight.kext then it start with zero brightness, black screen
If I remove the kext, brightness always 100%
What do?

Feartech · Mar 27, 2017

asusceleron said:
If I use the IntelBacklight.kext then it start with zero brightness, black screen
If I remove the kext, brightness always 100%
What do?

problem reporting files?

asusceleron · Mar 27, 2017

Sorry, I am going to attach them shortly

Code:

$kextstat|grep -y acpiplat
13    2 0xffffff7f827ac000 0x66000    0x66000    com.apple.driver.AppleACPIPlatform (5.0) 867C81BE-EA01-3A65-89F4-06D78E6514CA <12 11 7 6 5 4 3 1>

$ kextstat|grep -y appleintelcpu

$ kextstat|grep -y applelpc
104    0 0xffffff7f81fa3000 0x3000     0x3000     com.apple.driver.AppleLPC (3.1) F51595F0-F9B1-3B85-A1C3-F984DAD4107E <84 12 5 4 3>
$ kextstat|grep -y applehda
90    1 0xffffff7f8248a000 0x1d000    0x1d000    com.apple.driver.AppleHDAController (278.56) CFB0D0AE-F09A-3660-8F95-7A02FD5FBF07 <89 88 73 12 7 6 5 4 3 1>
120    0 0xffffff7f8260c000 0xb4000    0xb4000    com.apple.driver.AppleHDA (9274.7) A4EB06C9-A40A-39EF-9C4A-D7F23DB9A2F9 <119 90 89 88 77 73 12 11 6 5 4 3 1>

Code:

$ sudo touch /System/Library/Extensions && sudo kextcache -u /

Password:

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

AppleHPM.kext - dependency 'com.apple.driver.AppleIntelLpssI2CController' not found.

AppleHPM.kext is missing dependencies (including anyway; dependencies may be available from elsewhere)

kext-dev-mode allowing invalid signature -67030 0xFFFFFFFFFFFEFA2A for kext AppleHDA_ALC283.kext

AppleHPM.kext - dependency 'com.apple.driver.AppleIntelLpssI2CController' not found.

AppleHPM.kext - dependency 'com.apple.driver.AppleIntelLpssI2CController' not found.

Prelink failed for com.apple.driver.AppleHPM; omitting from prelinked kernel.

KernelCache ID: CB3425CD45E9CFE7FB33CF04260732C0

symlink("/System/Library/PrelinkedKernels/prelinkedkernel", "/System/Library/Caches/com.apple.kext.caches/Startup/kernelcache") failed 17 (File exists) <createPrelinkedKernel 2795>

asusceleron · Mar 27, 2017

feartech said:
problem reporting files?

Attached pls have a look

RehabMan · Mar 27, 2017

asusceleron said:
If I use the IntelBacklight.kext then it start with zero brightness, black screen
If I remove the kext, brightness always 100%
What do?

Read FAQ, "Problem Reporting"
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/

Use an external monitor or remote desktop.
My guess is you have a zero intel-backlight-level stored in NVRAM.
You can clear it with 'sudo nvram -d intel-backlight-level'.

asusceleron · Mar 27, 2017

RehabMan said:
Read FAQ, "Problem Reporting"
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/

Use an external monitor or remote desktop.
My guess is you have a zero intel-backlight-level stored in NVRAM.
You can clear it with 'sudo nvram -d intel-backlight-level'.

How do I know how many graphics variable in nvram, do I have

RehabMan · Mar 27, 2017

asusceleron said:
How do I know how many graphics variable in nvram, do I have

Sorry, I don't know what you mean by "graphics variable in nvram".

asusceleron · Mar 27, 2017

RehabMan said:
Sorry, I don't know what you mean by "graphics variable in nvram".

I have a variable name

Code:

'backlight-level'

, any time the startup screen is back, I run

Code:

'sudo nvram -c'

but it didn't work

Code:

$ nvram -xp

<?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>Clover.KeepBackupLimit</key>

    <data>

    MA==

    </data>

    <key>Clover.MountEFI</key>

    <data>

    MDAwNTAwMzktRTUyMC00MUI3LThFQTMtRDIwMTcyMDAwQTAw

    </data>

    <key>EFILoginHiDPI</key>

    <data>

    AAAAAA==

    </data>

    <key>EmuVariableUefiPresent</key>

    <data>

    WWVz

    </data>

    <key>LocationServicesEnabled</key>

    <data>

    AQ==

    </data>

    <key>OsxAptioFixDrv-RelocBase</key>

    <data>

    ANBbWAAAAAA=

    </data>

    <key>SystemAudioVolume</key>

    <data>

    Vw==

    </data>

    <key>SystemAudioVolumeDB</key>

    <data>

    AA==

    </data>

    <key>backlight-level</key>

    <data>

    RwE=

    </data>

    <key>bluetoothActiveControllerInfo</key>

    <data>

    KgqHgAAAAABwFAAW62ZsCQ==

    </data>

    <key>bootercfg</key>

    <data>

    KAA=

    </data>

    <key>csr-active-config</key>

    <data>

    ZwAAAA==

    </data>

    <key>fakesmc-key-#KEY-ui32</key>

    <data>

    AAAAEg==

    </data>

    <key>fakesmc-key-$Adr-ui32</key>

    <data>

    AAADAA==

    </data>

    <key>fakesmc-key-$Num-ui8</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-BATP-flag</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-BBIN-ui8</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-BEMB-flag</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-BNum-ui8</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-EPCI-ui32</key>

    <data>

    B+DwAA==

    </data>

    <key>fakesmc-key-MSAc-ui16</key>

    <data>

    AAA=

    </data>

    <key>fakesmc-key-MSFW-ui8</key>

    <data>

    AQA=

    </data>

    <key>fakesmc-key-MSLD-ui8</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-MSPS-ui16</key>

    <data>

    AAM=

    </data>

    <key>fakesmc-key-MSTc-ui8</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-MSWr-ui8</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-RBr -ch8*</key>

    <data>

    ajkzAGNoAAA=

    </data>

    <key>fakesmc-key-REV -ch8*</key>

    <data>

    AjUPAAEF

    </data>

    <key>fakesmc-key-RMde-char</key>

    <data>

    QQ==

    </data>

    <key>fakesmc-key-RPlt-ch8*</key>

    <data>

    ajkzAAAAAAA=

    </data>

    <key>flagstate</key>

    <data>

    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=

    </data>

    <key>fmm-computer-name</key>

    <data>

    VmlyZ2/igJlzIE1hY0Jvb2sgUHJv

    </data>

    <key>prev-lang:kbd</key>

    <data>

    ZW46MA==

    </data>

    <key>security-mode</key>

    <string>none</string>

    <key>specialbootdevice</key>

    <data>

    AgEMANBBAwoAAAAAAQEGAAAXAxIKAAEA//8AAAQBKgADAAAAADgpBwAAAAAAYH4GAAAA

    AND+vaejo9IBaOtO0tFR6QACAn//BAA=

    </data>

</dict>

</plist>

RehabMan · Mar 27, 2017

asusceleron said:

I have a variable name

Code:

'backlight-level'

, any time the startup screen is back, I run

Code:

'sudo nvram -c'

but it didn't work

Code:

$ nvram -xp

<?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>Clover.KeepBackupLimit</key>

    <data>

    MA==

    </data>

    <key>Clover.MountEFI</key>

    <data>

    MDAwNTAwMzktRTUyMC00MUI3LThFQTMtRDIwMTcyMDAwQTAw

    </data>

    <key>EFILoginHiDPI</key>

    <data>

    AAAAAA==

    </data>

    <key>EmuVariableUefiPresent</key>

    <data>

    WWVz

    </data>

    <key>LocationServicesEnabled</key>

    <data>

    AQ==

    </data>

    <key>OsxAptioFixDrv-RelocBase</key>

    <data>

    ANBbWAAAAAA=

    </data>

    <key>SystemAudioVolume</key>

    <data>

    Vw==

    </data>

    <key>SystemAudioVolumeDB</key>

    <data>

    AA==

    </data>

    <key>backlight-level</key>

    <data>

    RwE=

    </data>

    <key>bluetoothActiveControllerInfo</key>

    <data>

    KgqHgAAAAABwFAAW62ZsCQ==

    </data>

    <key>bootercfg</key>

    <data>

    KAA=

    </data>

    <key>csr-active-config</key>

    <data>

    ZwAAAA==

    </data>

    <key>fakesmc-key-#KEY-ui32</key>

    <data>

    AAAAEg==

    </data>

    <key>fakesmc-key-$Adr-ui32</key>

    <data>

    AAADAA==

    </data>

    <key>fakesmc-key-$Num-ui8</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-BATP-flag</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-BBIN-ui8</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-BEMB-flag</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-BNum-ui8</key>

    <data>

    AQ==

    </data>

    <key>fakesmc-key-EPCI-ui32</key>

    <data>

    B+DwAA==

    </data>

    <key>fakesmc-key-MSAc-ui16</key>

    <data>

    AAA=

    </data>

    <key>fakesmc-key-MSFW-ui8</key>

    <data>

    AQA=

    </data>

    <key>fakesmc-key-MSLD-ui8</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-MSPS-ui16</key>

    <data>

    AAM=

    </data>

    <key>fakesmc-key-MSTc-ui8</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-MSWr-ui8</key>

    <data>

    AA==

    </data>

    <key>fakesmc-key-RBr -ch8*</key>

    <data>

    ajkzAGNoAAA=

    </data>

    <key>fakesmc-key-REV -ch8*</key>

    <data>

    AjUPAAEF

    </data>

    <key>fakesmc-key-RMde-char</key>

    <data>

    QQ==

    </data>

    <key>fakesmc-key-RPlt-ch8*</key>

    <data>

    ajkzAAAAAAA=

    </data>

    <key>flagstate</key>

    <data>

    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=

    </data>

    <key>fmm-computer-name</key>

    <data>

    VmlyZ2/igJlzIE1hY0Jvb2sgUHJv

    </data>

    <key>prev-lang:kbd</key>

    <data>

    ZW46MA==

    </data>

    <key>security-mode</key>

    <string>none</string>

    <key>specialbootdevice</key>

    <data>

    AgEMANBBAwoAAAAAAQEGAAAXAxIKAAEA//8AAAQBKgADAAAAADgpBwAAAAAAYH4GAAAA

    AND+vaejo9IBaOtO0tFR6QACAn//BAA=

    </data>

</dict>

</plist>

backlight-level is what AppleBacklight.kext uses.

asusceleron · Mar 28, 2017

RehabMan said:
backlight-level is what AppleBacklight.kext uses.

Can you guess what cause this because my current workaround is rebuild kextcache and it works everytime

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[solved] Startup brightness zero hd615

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