goldenmaterial Posted August 10, 2016 Share Posted August 10, 2016 I'm running Yosemite on my Sony Vaio VPCZ13, which has a dedicated graphics card, the nVidia 330m. The problem is that I can't control the screen brightness (backlight) in any way. Fn+F5 or Fn+F6 don't work at all, and in system preferences there's no slider to adjust the brightness. Anybody can help me on that? The screen brightness is pretty high and can't stand it for long periods of time. Any needed information will be provided. Link to comment Share on other sites More sharing options...
Allan Posted August 10, 2016 Share Posted August 10, 2016 Try RehabMan's kext: ACPIBacklight 1 Link to comment Share on other sites More sharing options...
goldenmaterial Posted August 10, 2016 Author Share Posted August 10, 2016 Try RehabMan's kext: ACPIBacklight Ok, installed ACPIBacklight.kext with Kext Wizard and rebooted, but no luck. Fn+F5 or Fn+F6 still don't work to change brightness. There isn't any brightness slider either in System Settings. Just a question, ACPIBacklight is designed to work with Intel or nVidia cards? Or with both? Because my notebook has hybrid graphics but the BIOS is patched to VGA Switching Policy to Static, so I can boot with either nVidia 330m or Intel HD Graphics. Currently I've configured hackintosh to use nvidia (Inject nNVidia, nvidia_drv=1), etc. Link to comment Share on other sites More sharing options...
artur_pt Posted August 10, 2016 Share Posted August 10, 2016 hello try apply this patch in the dsdt graphics_PNLF.txt good hack 1 Link to comment Share on other sites More sharing options...
goldenmaterial Posted August 11, 2016 Author Share Posted August 11, 2016 hello try apply this patch in the dsdt graphics_PNLF.txt good hack Ok, DSDT.aml is patched, but still no brightness control with either Fn keys or brightness slider. Here's what I did: Mount EFI partition as root or with Clover Configurator Vibrant Download DSDTEditor_Mac.zip (following http://www.insanelymac.com/forum/topic/287011-how-to-extract-and-compile-dsdtaml-with-dsdt-editor/) Download and install Java 6 (required by DSDTEditor): https://support.apple.com/kb/DL1572?locale=en_US Edit /Volumes/EFI/EFI/CLOVER/ACPI/patched/DSDT.aml with DSDTEditor for mac. (I copied it to my home folder and after modifying it write it back as root) File -> Open -> DSDT.aml File -> Extract DSDT Patch -> Open... -> Choose graphics_PNLF.txt IASL -> Compile IASL -> Save AML as... -> save as DSDT.aml and write it back. Reboot the computer Link to comment Share on other sites More sharing options...
artur_pt Posted August 11, 2016 Share Posted August 11, 2016 hello if u apply the patch and compile and save the .aml sorry no idea should look in ioregexplorer what is saying about that issue good hack Link to comment Share on other sites More sharing options...
DuongTHVN Posted August 12, 2016 Share Posted August 12, 2016 upload your dsdt+ssdt plz Link to comment Share on other sites More sharing options...
goldenmaterial Posted September 1, 2016 Author Share Posted September 1, 2016 I've found it why happens: my screen is connected as AppleDisplay instead of AppleBacklightDisplay with DisplayPort connection type. Are still necessary the dsdt+ssdt? Where can I get them? Link to comment Share on other sites More sharing options...
Allan Posted September 1, 2016 Share Posted September 1, 2016 Where can I get them? Look: DSDT — What is it and how do I get it? Link to comment Share on other sites More sharing options...
styrian Posted September 1, 2016 Share Posted September 1, 2016 I've found it why happens: my screen is connected as AppleDisplay instead of AppleBacklightDisplay with DisplayPort connection type. Are still necessary the dsdt+ssdt? Where can I get them? Hello! The first step is to use the SMBios of an Apple portable device to get brightnesscontrol working on OSX, because of the OSX kernel. If you then can get your display dedected as internal by OSX, the brightness silder should work. The keys need perhaps an adapted VoodooPS2 kext. PLNF patch in DSDT/SSDT is in any case needed. There are also many Apple devices with eDP connected displays. Have fun. PS.: Temporary solution is using a dimmer app without possibility to save energy. You could try this one: http://en.freedownloadmanager.org/Mac-OS/Brightness-Menulet-FREE.html Link to comment Share on other sites More sharing options...
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