Possible to disable discrete GPU on MacBook Pro?

Hey all, I have a Mid-2014 Retina MacBook Pro with dual GPUs. I've got most everything set up just right (enabled powersaving on CPU/IGPU, disabled bluetooth/webcam/sdcard, etc), as such I have switched from the NVIDIA graphics to Intel Iris Pro by chainloading the apple_set_os.efi patch through GRUB, removing the nvidia driver, and installing the Intel one. Now, I need to know if there is a way to completely power down the discrete GPU, acpi_call-git from the AUR does not work. Any ideas?
Thanks?
EDIT: I use gpu-switch, a utility for MacBooks that lets you specify which card you want to use on next boot. I am not sure whether this completely powers down the other card, I don't think it does since it still shows up in lspci and I still have bad battery drain. I will check vgaswitcheroo. I have the Intel GPU working, but I want to fully power down the other one to prevent battery drain.
Last edited by garnerlogan65 (2015-05-24 12:32:26)

Hy there,
you can try it with this entry (gfxcardstatus) in the wiki if and only if you have OS X on a bootable device!
https://wiki.archlinux.org/index.php/MacBookPro10,x
I did that on my MBP early 2011 with the defekt AMD / ATI card and it works great!
BUT ATTENTION you need the 2.2.1 Version of that program!!!!!
Earlyer or later versions WONT work!!!
Here you go: https://software.com/mac/apps/gfxcardstatus/2.2.1
Hope that helps in the first place (i know it is quick and dirty....but it works)
P.S. if you want t know the status of the GPU's you can do it with that :  cat /sys/kernel/debug/vgaswitcheroo/switch
comes from the ubuntu wiki: https://help.ubuntu.com/community/Hybri … switcheroo
Let us know how it works
SunBey
Last edited by SunBey (2015-05-24 09:19:48)

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    OS X 10.9.3 (13D65)
    Error message:
    Anonymous UUID:       88083BD7-6D2D-D53C-77F2-A75DBFE9C4F2
    Sun Jun 29 20:43:46 2014
    panic(cpu 1 caller 0xffffff7f87e20f7c): "GPU Panic: [<None>] 5 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff8121bd7000 0x0a5480a2, D0, P3/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.5.26/src/Apple MuxControl/kext/GPUPanic.cpp:127
    Backtrace (CPU 1), Frame : Return Address
    0xffffff8111012ea0 : 0xffffff8005a22fa9
    0xffffff8111012f20 : 0xffffff7f87e20f7c
    0xffffff8111012ff0 : 0xffffff7f86537e7b
    0xffffff81110130b0 : 0xffffff7f8660146a
    0xffffff81110130f0 : 0xffffff7f866014da
    0xffffff8111013160 : 0xffffff7f86880056
    0xffffff8111013290 : 0xffffff7f86624b09
    0xffffff81110132b0 : 0xffffff7f8653e8cd
    0xffffff8111013360 : 0xffffff7f8653c3d8
    0xffffff8111013560 : 0xffffff7f8653dd27
    0xffffff8111013630 : 0xffffff7f8746c3df
    0xffffff8111013700 : 0xffffff7f874967b3
    0xffffff8111013780 : 0xffffff7f8747eae0
    0xffffff81110137e0 : 0xffffff7f8747f3da
    0xffffff8111013830 : 0xffffff7f8747f754
    0xffffff81110138a0 : 0xffffff7f8747ffc8
    0xffffff81110138e0 : 0xffffff7f8744cfea
    0xffffff8111013a60 : 0xffffff7f8747c940
    0xffffff8111013b20 : 0xffffff7f8744bad9
    0xffffff8111013b70 : 0xffffff8005ecea56
    0xffffff8111013b90 : 0xffffff8005ed0051
    0xffffff8111013bf0 : 0xffffff8005ecdabf
    0xffffff8111013d40 : 0xffffff8005ab66a8
    0xffffff8111013e50 : 0xffffff8005a26bf1
    0xffffff8111013e80 : 0xffffff8005a139f5
    0xffffff8111013ef0 : 0xffffff8005a1e043
    0xffffff8111013f70 : 0xffffff8005ac989d
    0xffffff8111013fb0 : 0xffffff8005af3c76
          Kernel Extensions in backtrace:
             com.apple.driver.AppleMuxControl(3.5.26)[B67CD59F-1344-37BC-8A9A-46D6D3DCA13D]@ 0xffffff7f87e12000->0xffffff7f87e25fff
                dependency: com.apple.driver.AppleGraphicsControl(3.5.26)[C0F9A79F-167E-3A68-873C-5CE17B97F B11]@0xffffff7f87e0a000
                dependency: com.apple.iokit.IOACPIFamily(1.4)[045D5D6F-AD1E-36DB-A249-A346E2B48E54]@0xfffff f7f8637f000
                dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f860be000
                dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f86495000
                dependency: com.apple.driver.AppleBacklightExpert(1.0.4)[E04639C5-D734-3AB3-A682-FE66694C66 53]@0xffffff7f87e0d000
             com.apple.nvidia.classic.NVDAResmanTesla(8.2.4)[6EB3FF52-A4F6-3496-AE9C-D89B00F DE504]@0xffffff7f864e8000->0xffffff7f86750fff
                dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f860be000
                dependency: com.apple.iokit.IONDRVSupport(2.4.1)[B93BBFC9-9ED5-3DDD-8CED-5EDA081BB997]@0xff ffff7f864d8000
                dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f86495000
             com.apple.nvidia.classic.NVDANV50HalTesla(8.2.4)[B0E6AAA7-E970-3D81-8B43-145D56 A3A4AC]@0xffffff7f8675b000->0xffffff7f86a04fff
                dependency: com.apple.nvidia.classic.NVDAResmanTesla(8.2.4)[6EB3FF52-A4F6-3496-AE9C-D89B00F DE504]@0xffffff7f864e8000
                dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f860be000
             com.apple.GeForceTesla(8.2.4)[24ED915E-02F3-3A31-8502-6AA41FFCA420]@0xffffff7f8 743a000->0xffffff7f87504fff
                dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f860be000
                dependency: com.apple.iokit.IONDRVSupport(2.4.1)[B93BBFC9-9ED5-3DDD-8CED-5EDA081BB997]@0xff ffff7f864d8000
                dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f86495000
                dependency: com.apple.nvidia.classic.NVDAResmanTesla(8.2.4)[6EB3FF52-A4F6-3496-AE9C-D89B00F DE504]@0xffffff7f864e8000
    BSD process name corresponding to current thread: WindowServer
    Mac OS version:
    13D65
    Kernel version:
    Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64
    Kernel UUID: ADD73AE6-88B0-32FB-A8BB-4F7C8BE4092E
    Kernel slide:     0x0000000005800000
    Kernel text base: 0xffffff8005a00000
    System model name: MacBookPro6,2 (Mac-F22586C8)
    System uptime in nanoseconds: 7874092753803
    last loaded kext at 281017367413: com.apple.filesystems.msdosfs 1.9 (addr 0xffffff7f86a84000, size 65536)
    last unloaded kext at 686916869587: com.apple.driver.AppleUSBUHCI 656.4.1 (addr 0xffffff7f86cda000, size 65536)
    loaded kexts:
    com.nvidia.CUDA 1.1.0
    com.bresink.driver.BRESINKx86Monitoring 9.0
    com.hzsystems.terminus.driver 4
    com.rim.driver.BlackBerryUSBDriverInt 0.0.74
    com.apple.filesystems.ntfs 3.11
    com.apple.driver.AudioAUUC 1.60
    com.apple.driver.AppleHWSensor 1.9.5d0
    com.apple.driver.AGPM 100.14.15
    com.apple.filesystems.autofs 3.0
    com.apple.iokit.IOBluetoothSerialManager 4.2.4f1
    com.apple.driver.AppleMikeyHIDDriver 124
    com.apple.iokit.IOUserEthernet 1.0.0d1
    com.apple.driver.AppleIntelHDGraphics 8.2.4
    com.apple.Dont_Steal_Mac_OS_X 7.0.0
    com.apple.driver.AppleHWAccess 1
    com.apple.GeForceTesla 8.2.4
    com.apple.driver.AppleIntelHDGraphicsFB 8.2.4
    com.apple.driver.AppleHDA 2.6.1f2
    com.apple.driver.AppleUpstreamUserClient 3.5.13
    com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.4f1
    com.apple.driver.AppleSMCLMU 2.0.4d1
    com.apple.driver.AppleMikeyDriver 2.6.1f2
    com.apple.driver.AppleLPC 1.7.0
    com.apple.driver.AppleMuxControl 3.5.26
    com.apple.driver.AppleMCCSControl 1.1.12
    com.apple.driver.AppleSMCPDRC 1.0.0
    com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
    com.apple.driver.SMCMotionSensor 3.0.4d1
    com.apple.driver.AppleUSBTCButtons 240.2
    com.apple.driver.AppleUSBCardReader 3.4.1
    com.apple.driver.AppleUSBTCKeyboard 240.2
    com.apple.driver.AppleIRController 325.7
    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
    com.apple.BootCache 35
    com.apple.iokit.SCSITaskUserClient 3.6.6
    com.apple.driver.XsanFilter 404
    com.apple.iokit.IOAHCIBlockStorage 2.5.1
    com.apple.driver.AppleUSBHub 666.4.0
    com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
    com.apple.driver.AirPort.Brcm4331 700.20.22
    com.apple.driver.AppleAHCIPort 3.0.0
    com.apple.driver.AppleFWOHCI 5.0.2
    com.apple.driver.AppleUSBEHCI 660.4.0
    com.apple.driver.AppleSmartBatteryManager 161.0.0
    com.apple.driver.AppleRTC 2.0
    com.apple.driver.AppleACPIButtons 2.0
    com.apple.driver.AppleHPET 1.8
    com.apple.driver.AppleSMBIOS 2.1
    com.apple.driver.AppleACPIEC 2.0
    com.apple.driver.AppleAPIC 1.7
    com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
    com.apple.nke.applicationfirewall 153
    com.apple.security.quarantine 3
    com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
    com.apple.AppleGraphicsDeviceControl 3.5.26
    com.apple.kext.triggers 1.0
    com.apple.iokit.IOSerialFamily 10.0.7
    com.apple.iokit.IOSurface 91.1
    com.apple.iokit.IOBluetoothFamily 4.2.4f1
    com.apple.driver.DspFuncLib 2.6.1f2
    com.apple.vecLib.kext 1.0.0
    com.apple.iokit.IOAudioFamily 1.9.7fc2
    com.apple.kext.OSvKernDSPLib 1.14
    com.apple.nvidia.classic.NVDANV50HalTesla 8.2.4
    com.apple.nvidia.classic.NVDAResmanTesla 8.2.4
    com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.4f1
    com.apple.driver.AppleHDAController 2.6.1f2
    com.apple.iokit.IOHDAFamily 2.6.1f2
    com.apple.driver.AppleSMBusPCI 1.0.12d1
    com.apple.driver.AppleGraphicsControl 3.5.26
    com.apple.driver.AppleBacklightExpert 1.0.4
    com.apple.driver.AppleSMBusController 1.0.11d1
    com.apple.iokit.IONDRVSupport 2.4.1
    com.apple.iokit.IOGraphicsFamily 2.4.1
    com.apple.iokit.IOFireWireIP 2.2.6
    com.apple.driver.IOPlatformPluginLegacy 1.0.0
    com.apple.driver.IOPlatformPluginFamily 5.7.0d11
    com.apple.driver.AppleSMC 3.1.8
    com.apple.driver.AppleUSBMultitouch 240.9
    com.apple.iokit.IOUSBHIDDriver 660.4.0
    com.apple.driver.AppleUSBMergeNub 650.4.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.6
    com.apple.iokit.IOBDStorageFamily 1.7
    com.apple.iokit.IODVDStorageFamily 1.7.1
    com.apple.iokit.IOCDStorageFamily 1.7.1
    com.apple.iokit.IOAHCISerialATAPI 2.6.1
    com.apple.iokit.IOEthernetAVBController 1.0.3b4
    com.apple.driver.mDNSOffloadUserClient 1.0.1b5
    com.apple.iokit.IO80211Family 630.35
    com.apple.iokit.IONetworkingFamily 3.2
    com.apple.iokit.IOUSBUserClient 660.4.2
    com.apple.iokit.IOAHCIFamily 2.6.5
    com.apple.iokit.IOFireWireFamily 4.5.5
    com.apple.driver.AppleEFINVRAM 2.0
    com.apple.driver.AppleEFIRuntime 2.0
    com.apple.iokit.IOHIDFamily 2.0.0
    com.apple.iokit.IOSMBusFamily 1.1
    com.apple.security.sandbox 278.11
    com.apple.kext.AppleMatch 1.0.0d1
    com.apple.security.TMSafetyNet 7
    com.apple.driver.AppleKeyStore 2
    com.apple.driver.DiskImages 371.1
    com.apple.iokit.IOReportFamily 23
    com.apple.driver.AppleFDEKeyStore 28.30
    com.apple.iokit.IOUSBMassStorageClass 3.6.0
    com.apple.driver.AppleUSBComposite 656.4.1
    com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.6
    com.apple.iokit.IOStorageFamily 1.9
    com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
    com.apple.iokit.IOUSBFamily 677.4.0
    com.apple.driver.AppleACPIPlatform 2.0
    com.apple.iokit.IOPCIFamily 2.9
    com.apple.iokit.IOACPIFamily 1.4
    com.apple.kec.corecrypto 1.0
    com.apple.kec.pthread 1
    Model: MacBookPro6,2, BootROM MBP61.0057.B0F, 2 processors, Intel Core i7, 2.66 GHz, 8 GB, SMC 1.58f17
    Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB
    Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB
    Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 800 MHz, 0x0000, 0x000000000000000000000000000000000000
    Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 800 MHz, 0x0000, 0x000000000000000000000000000000000000
    AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.106.98.100.22)
    Bluetooth: Version 4.2.4f1 13674, 3 services, 23 devices, 1 incoming serial ports
    Network Service: AirPort, AirPort, en1
    Serial ATA Device: Hitachi HTS545050B9SA02, 500,11 GB
    Serial ATA Device: MATSHITADVD-R   UJ-898
    USB Device: Hub
    USB Device: BRCM2070 Hub
    USB Device: Bluetooth USB Host Controller
    USB Device: Internal Memory Card Reader
    USB Device: Apple Internal Keyboard / Trackpad
    USB Device: Hub
    USB Device: IR Receiver
    USB Device: Built-in iSight
    Thunderbolt Bus:
    <Personal Information Edited by Host>

    zhanghang0529,
    Before, I'd want to receive reply on that topic from someone who had done it, because I don't want to create extra problems with downgrade.
    Concerning 'temporary' solutions: yeah, they work, like gfxCard, heating the GPU unit for some people (althouth I find it a little extreme), but it's not as it should be, this is not native idea that was born in Apple design offices. And I want to laptop to work as it was designed to work...
    About new laptop: call me old school, but I prefer things to be fixed before really getting rid of them. I went to local Apple authorized repair shop, but as in your case, they could only recommend me to buy new motherboard or the new laptop.

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      Model Identifier:          iMac10,1
      Processor Name:          Intel Core 2 Duo
      Processor Speed:          3.06 GHz
      Number Of Processors:          1
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