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Brightness low after boot

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Joined
Nov 26, 2014
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145
Motherboard
Lenovo Ideapad Z500
CPU
Intel Core i7 3632QM
Graphics
Intel HD4000/Nvidia GeForce GT 635M
Mac
  1. MacBook Pro
Classic Mac
  1. 0
Mobile Phone
  1. iOS
Hi! I've a little problem with my brightness on yosemite installed in a lenovo z500.After boot it is setted to zero. I've installed acpibacklight and all the patches for my dsdt...everything works well except this issues...my brighness works well and the keyboard keys are working but when i boot up the screen has a very low brightness and i must set it with keys. Where can be the problem?thanks
 
Hi! I've a little problem with my brightness on yosemite installed in a lenovo z500.After boot it is setted to zero. I've installed acpibacklight and all the patches for my dsdt...everything works well except this issues...my brighness works well and the keyboard keys are working but when i boot up the screen has a very low brightness and i must set it with keys. Where can be the problem?thanks

Make sure your nvram is working. Are you using Clover?
 
Yes i'm using clover. How can i check if nvram os working? Thanks
 
Yes i'm using clover. How can i check if nvram os working? Thanks

If you're using EmuVariable* (Clover driver), make sure you installed RC scripts.

You should also check that you have the latest ACPIBacklight.kext.
 
Have the same problem - backlight level reseted on reboot/wakeup (lenovo z500).
I checked nvram (set value > reboot > check value) - its ok. Installed latest ACPIBacklight (3.0.1d2). Also I noticed that values for
Code:
~[B]>[/B] nvram -p -x | grep backlight
[B]backlight[/B]-level    %10%07
acpi-[B]backlight[/B]-level    %00%00
are unchanged after I adjust backlight brightness by keys - is it ok?
 
Have the same problem - backlight level reseted on reboot/wakeup (lenovo z500).
I checked nvram (set value > reboot > check value) - its ok. Installed latest ACPIBacklight (3.0.1d2). Also I noticed that values for
Code:
~[B]>[/B] nvram -p -x | grep backlight
[B]backlight[/B]-level    %10%07
acpi-[B]backlight[/B]-level    %00%00
are unchanged after I adjust backlight brightness by keys - is it ok?

Download patchmatic: https://bitbucket.org/RehabMan/os-x-maciasl-patchmatic/downloads/RehabMan-patchmatic-2015-0107.zip
Extract the 'patchmatic' binary from the ZIP. Copy it to /usr/bin, such that you have the binary at /usr/bin/patchmatic.

In terminal,
Code:
if [ -d ~/Downloads/RehabMan ]; then rm -R ~/Downloads/RehabMan; fi
mkdir ~/Downloads/RehabMan
cd ~/Downloads/RehabMan
patchmatic -extract

Note: It is easier if you use copy/paste instead of typing the commands manually.

Post contents of Downloads/RehabMan directory (as ZIP).

Also, post ioreg: http://www.tonymacx86.com/audio/58368-guide-how-make-copy-ioreg.html. Please, use the IORegistryExplorer v2.1 attached to the post! DO NOT reply with an ioreg from any other version of IORegistryExplorer.app.

And output from:
Code:
kextstat|grep -y acpiplat
kextstat|grep -y appleintelcpu
kextstat|grep -y applelpc

Also, post EFI/Clover folder.
 
Thank you for answer!
Code:
~[B]>[/B] kextstat|grep -y acpiplat
   13    2 0xffffff7f8232f000 0x5f000    0x5f000    com.apple.driver.Apple[B]ACPIPlat[/B]form (3.1) <12 11 7 6 5 4 3 1>
~[B]>[/B] kextstat|grep -y appleintelcpu
   21    0 0xffffff7f82216000 0x2b000    0x2b000    com.apple.driver.[B]AppleIntelCPU[/B]PowerManagement (218.0.0) <7 6 5 4 3 1>
   29    0 0xffffff7f82211000 0x3000     0x3000
com.apple.driver.[B]AppleIntelCPU[/B]PowerManagementClient (218.0.0) <7 6 5 4 3 1>
~[B]>[/B] kextstat|grep -y applelpc
   84    0 0xffffff7f8202a000 0x3000     0x3000     com.apple.driver.[B]AppleLPC[/B] (1.7.3) <73 12 5 4 3>
 

Attachments

  • CLOVER.zip
    10.6 MB · Views: 66
  • patchmatic-extract.zip
    22 KB · Views: 68
  • Viacheslav’s MacBook Air.zip
    1 MB · Views: 68
Thank you for answer!
Code:
~[B]>[/B] kextstat|grep -y acpiplat
   13    2 0xffffff7f8232f000 0x5f000    0x5f000    com.apple.driver.Apple[B]ACPIPlat[/B]form (3.1) <12 11 7 6 5 4 3 1>
~[B]>[/B] kextstat|grep -y appleintelcpu
   21    0 0xffffff7f82216000 0x2b000    0x2b000    com.apple.driver.[B]AppleIntelCPU[/B]PowerManagement (218.0.0) <7 6 5 4 3 1>
   29    0 0xffffff7f82211000 0x3000     0x3000
com.apple.driver.[B]AppleIntelCPU[/B]PowerManagementClient (218.0.0) <7 6 5 4 3 1>
~[B]>[/B] kextstat|grep -y applelpc
   84    0 0xffffff7f8202a000 0x3000     0x3000     com.apple.driver.[B]AppleLPC[/B] (1.7.3) <73 12 5 4 3>

DSDT is not patched correctly for backlight control.

See guide: http://www.tonymacx86.com/yosemite-...ching-dsdt-ssdt-laptop-backlight-control.html
 
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