<< Solved >> Intel HD4000 no acceleration (Catalina/Big Sur)

saimon73 · Nov 9, 2023

Hello!
I try mac on my old PC (i7-3770T+ga-b75n) in macOS Catalina 10.15.7
trouble: lose hardware acceleration Intel HD 4000 after reboot OS.
how?: not transparent dock, freeze animation, hackintool "decoder failed" "Metal... No ".
solve: reinstalling the OS (temporarily), in 1 out of 10 reboots - will come back.
SPEC:
two 24-inch BenQ (dvi+hdmi connection) + ga-b75n + i7-3770T
OpenCore 0.9.5 settings: config.plist changed + binary patches + ACPI tables
SMBIOS Macmini 6.1
ACPI: SSDT-EC, SSDT-PM, SSDT-SBUS-MCHC
Drivers: HfsPlus, OpenRuntime, OpenCanopy, ResetNvramEntry
Kexts: Lily, VirtualSMC,WhateverGreen, RealtekRTL8111, AppleALC
Mac OS: installation via recovery from apple servers
boot-arg: -v keepsyms=1 debug=0x100
what i did:
changed the bootloader - first was Clover
changed ig-platform-id 0x0166000B/0x0166000A/0x01620005 (in HD4000 i73770T ID = 0x162)
changed device-id 0x0162/0x0166
changed SMBIOS on Macmini 6.2, iMac 13.2
attaches ioreg, config.plist, full debug log + part of whatevergreen debug log(spoiler).

Code:

kernel: (Lilu) WhateverGreen       weg: @ (DBG) non-apple-fw proceeding with devprops 1
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData device-id has 162 value
kernel: (Lilu) WhateverGreen       weg: @ (DBG) IGPU has real 0162 acpi 0162 fake 0000 and model Intel HD Graphics 4000
kernel: (Lilu) WhateverGreen       weg: @ (DBG) found existing built-in
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData applbkl was not found
kernel: (Lilu) WhateverGreen       weg: @ (DBG) resulting applbkl value is 2
kernel: (Lilu) WhateverGreen       weg: @ (DBG) detecting policy
kernel: (Lilu) WhateverGreen       weg: @ (DBG) no external gpus
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData framebuffer-patch-enable was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData framebuffer-patch0-enable was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData rps-control was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData complete-modeset was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData force-online was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData igfxpavp was not found
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) FCA: Enabled = 0.
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) RRS: Enabled = 0.
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) RWS: Enabled = 0.
kernel: (Lilu) WhateverGreen     shiki: @ (DBG) will autodetect autodetect GPU 0 whitelist 0
kernel: (Lilu) WhateverGreen     shiki: @ (DBG) pre-config: online 0, bgra 0, compat 0, whitelist 0, id 0, stream 0, hwdrm 0 swdrm 0
kernel: (Lilu) WhateverGreen       weg: @ (DBG) vinfo 1: 1080:1920 32:7680:1
kernel: (Lilu) WhateverGreen       weg: @ (DBG) vinfo 2:  67:240 7680:1:0
...
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) platform is snb 0 and list 0xFFFFFF7F8B345290
...
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) applyHdmiAutopatch framebufferId 166000A cpugen 5
...
kernel: (pmtelemetry) Unsupported CPU
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [0] busId: 0x00, pipe: 0, type: 0x00000002, flags: 0x00000030
kernel: (AppleRTC) RTC: getGMTTimeOfDay 1699537655
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) replaced connector 0 type from DP to HDMI
...
kernel: DSMOS has arrived
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [1] busId: 0x00, pipe: 0, type: 0x00000001, flags: 0x00000040
kernel: (pmtelemetry) Unsupported CPU
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) replaced connector 1 type from DP to HDMI
kernel: (pmtelemetry) Unsupported PCH
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [2] busId: 0x00, pipe: 0, type: 0x00000001, flags: 0x00000040
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [3] busId: 0x00, pipe: 0, type: 0x00000001, flags: 0x00000040
...
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) hdmi patching framebufferId 0x0166000A successful
...
kernel: Security policy loaded: Lilu Kernel Extension 1.6.7 DEBUG build (Lilu)
kernel: (Lilu) WhateverGreen      init: @ (DBG) WhateverGreen bootstrap DBG-166-2023-08-07
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableDrmdmaPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableGfxCGPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableUVDPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableVCEPowerGating
...
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableDynamicGfxMGPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableGmcPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableAcpPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableSAMUPowerGating
...
kernel: (IOGraphicsFamily) GTrace synchronization point 3
kernel: PMRD: delayChildNotification for 0x100000214
kernel: PMRD: AppleIntelFramebuffer tag flags 200
kernel: (IOGraphicsFamily) GTrace synchronization point 4
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][createAGPMClass         ] machines_dict->getObject(modelName Macmini6,1)
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][createAGPMClass         ] gpuDict IGPU
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][createAGPMClass         ] build gpuDict by GPU IGPU.
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][start                   ] fIsExternalGPU 0
kernel: (IOPlatformPluginFamily) X86PlatformPlugin::cgRegisterPLimitCallbackHandler - There are 0 entries in the linked list before target 0xffffff8024a0b800 callback 0xffffff7f8bf1eeae name AGPM, LINK at 0xffffff8021254458 contains 0xffffff8023b21c40
kernel: (IOPlatformPluginFamily) X86PlatformPlugin::cgRegisterPLimitCallbackHandler - There are 0 entries in the linked list before target 0xffffff8024a0b800 callback 0xffffff7f8bf1eeae name AGPM, LINK at 0xffffff8021254458 contains 0xffffff8023b21c40
kernel: (IOPlatformPluginFamily) HE2N_Key Does Not Exist, use kSMCPStatesIGPU for Internal GPU
kernel: (IOPlatformPluginFamily) HE2N_Key Does Not Exist, use kSMCPStatesIGPU for Internal GPU
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][start                   ] GPU = IGPU Initialized, Control ID 16
kernel: PMRD: delayChildNotification for 0x100000214
kernel: PMRD: AppleIntelFramebuffer tag flags 200
kernel: (IOGraphicsFamily) GTrace synchronization point 5
kernel: PMRD: delayChildNotification for 0x100000214
kernel: PMRD: AppleIntelFramebuffer tag flags 200
kernel: (AppleGraphicsDevicePolicy) Adding AGDP mode validate property
kernel: (AppleGraphicsDeviceControl) AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelCapriController/IntelFBClientControl)
kernel: IOConsoleUsers: time(0) 0->0, lin 0, llk 1,
kernel: IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0
kernel: (Sandbox) Sandbox: 5 duplicate reports for bluetoothd deny(1) mach-lookup com.apple.server.bluetooth
kernel: (Sandbox) Sandbox: com.apple.Ambien(237) deny(1) mach-lookup com.apple.windowserver
kernel: (AppleIntelFramebufferCapri) DRMStatus: iTunes/Apple Store Content Access Problem. Content playback may be disabled on this computer. You can continue to use the machine, but you should contact an Apple support representative. ErrorCode: 8877652

PS: problem hasn't been solved even with the replacement of the processor and the change of macOS
changed processor - now i7-3770S (native iMac13,1)
changed macOS - now Big Sur (fake SMBIOS iMac14,4)

Feartech · Nov 9, 2023

saimon73 said:

Hello!
I try mac on my old PC (i7-3770T+ga-b75n) in macOS Catalina 10.15.7
trouble: lose hardware acceleration Intel HD 4000 after reboot OS.
how?: not transparent dock, freeze animation, hackintool "decoder failed" "Metal... No ".
solve: reinstalling the OS (temporarily), in 1 out of 10 reboots - will come back.
SPEC:
OpenCore 0.9.5 settings: config.plist changed + binary patches + ACPI tables
SMBIOS Macmini 6.1
ACPI: SSDT-EC, SSDT-IMEI, SSDT-PM, SSDT-SBUS-MCHC
Drivers: HfsPlu, OpenRuntime, OpenCanopy, ResetNvramEntry
Kexts: Lily, VirtualSMC,WhateverGreen, RealtekRTL8111, AppleALC
Mac OS: installation via recovery from apple servers
boot-arg: -v keepsyms=1 debug=0x100 -wegdbg
what i did:
changed the bootloader - first was Clover
changed ig-platform-id 0x0166000B/0x0166000A/0x01620005 (in HD4000 i73770T ID = 0x162)
changed device-id 0x0162/0x0166
changed SMBIOS on Macmini 6.2, iMac 13.2
attaches ioreg, config.plist + hackintool screenshot ("intel generation ???") also the part of debug log concerning graphics.

Code:

kernel: (Lilu) WhateverGreen       weg: @ (DBG) non-apple-fw proceeding with devprops 1
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData device-id has 162 value
kernel: (Lilu) WhateverGreen       weg: @ (DBG) IGPU has real 0162 acpi 0162 fake 0000 and model Intel HD Graphics 4000
kernel: (Lilu) WhateverGreen       weg: @ (DBG) found existing built-in
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData applbkl was not found
kernel: (Lilu) WhateverGreen       weg: @ (DBG) resulting applbkl value is 2
kernel: (Lilu) WhateverGreen       weg: @ (DBG) detecting policy
kernel: (Lilu) WhateverGreen       weg: @ (DBG) no external gpus
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData framebuffer-patch-enable was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData framebuffer-patch0-enable was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData rps-control was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData complete-modeset was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData force-online was not found
kernel: (Lilu) WhateverGreen     iokit: @ (DBG) getOSData igfxpavp was not found
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) FCA: Enabled = 0.
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) RRS: Enabled = 0.
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) RWS: Enabled = 0.
kernel: (Lilu) WhateverGreen     shiki: @ (DBG) will autodetect autodetect GPU 0 whitelist 0
kernel: (Lilu) WhateverGreen     shiki: @ (DBG) pre-config: online 0, bgra 0, compat 0, whitelist 0, id 0, stream 0, hwdrm 0 swdrm 0
kernel: (Lilu) WhateverGreen       weg: @ (DBG) vinfo 1: 1080:1920 32:7680:1
kernel: (Lilu) WhateverGreen       weg: @ (DBG) vinfo 2:  67:240 7680:1:0
...
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) platform is snb 0 and list 0xFFFFFF7F8B345290
...
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) applyHdmiAutopatch framebufferId 166000A cpugen 5
...
kernel: (pmtelemetry) Unsupported CPU
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [0] busId: 0x00, pipe: 0, type: 0x00000002, flags: 0x00000030
kernel: (AppleRTC) RTC: getGMTTimeOfDay 1699537655
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) replaced connector 0 type from DP to HDMI
...
kernel: DSMOS has arrived
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [1] busId: 0x00, pipe: 0, type: 0x00000001, flags: 0x00000040
kernel: (pmtelemetry) Unsupported CPU
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) replaced connector 1 type from DP to HDMI
kernel: (pmtelemetry) Unsupported PCH
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [2] busId: 0x00, pipe: 0, type: 0x00000001, flags: 0x00000040
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) connector [3] busId: 0x00, pipe: 0, type: 0x00000001, flags: 0x00000040
...
kernel: (Lilu) WhateverGreen      igfx: @ (DBG) hdmi patching framebufferId 0x0166000A successful
...
kernel: Security policy loaded: Lilu Kernel Extension 1.6.7 DEBUG build (Lilu)
kernel: (Lilu) WhateverGreen      init: @ (DBG) WhateverGreen bootstrap DBG-166-2023-08-07
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableDrmdmaPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableGfxCGPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableUVDPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableVCEPowerGating
...
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableDynamicGfxMGPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableGmcPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableAcpPowerGating
kernel: (Lilu) WhateverGreen       rad: @ (DBG) not enabling CAIL_DisableSAMUPowerGating
...
kernel: (IOGraphicsFamily) GTrace synchronization point 3
kernel: PMRD: delayChildNotification for 0x100000214
kernel: PMRD: AppleIntelFramebuffer tag flags 200
kernel: (IOGraphicsFamily) GTrace synchronization point 4
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][createAGPMClass         ] machines_dict->getObject(modelName Macmini6,1)
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][createAGPMClass         ] gpuDict IGPU
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][createAGPMClass         ] build gpuDict by GPU IGPU.
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][start                   ] fIsExternalGPU 0
kernel: (IOPlatformPluginFamily) X86PlatformPlugin::cgRegisterPLimitCallbackHandler - There are 0 entries in the linked list before target 0xffffff8024a0b800 callback 0xffffff7f8bf1eeae name AGPM, LINK at 0xffffff8021254458 contains 0xffffff8023b21c40
kernel: (IOPlatformPluginFamily) X86PlatformPlugin::cgRegisterPLimitCallbackHandler - There are 0 entries in the linked list before target 0xffffff8024a0b800 callback 0xffffff7f8bf1eeae name AGPM, LINK at 0xffffff8021254458 contains 0xffffff8023b21c40
kernel: (IOPlatformPluginFamily) HE2N_Key Does Not Exist, use kSMCPStatesIGPU for Internal GPU
kernel: (IOPlatformPluginFamily) HE2N_Key Does Not Exist, use kSMCPStatesIGPU for Internal GPU
kernel: (AppleGraphicsPowerManagement) [AGPM][INFO ][CONTROLLER  ][start                   ] GPU = IGPU Initialized, Control ID 16
kernel: PMRD: delayChildNotification for 0x100000214
kernel: PMRD: AppleIntelFramebuffer tag flags 200
kernel: (IOGraphicsFamily) GTrace synchronization point 5
kernel: PMRD: delayChildNotification for 0x100000214
kernel: PMRD: AppleIntelFramebuffer tag flags 200
kernel: (AppleGraphicsDevicePolicy) Adding AGDP mode validate property
kernel: (AppleGraphicsDeviceControl) AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelCapriController/IntelFBClientControl)
kernel: IOConsoleUsers: time(0) 0->0, lin 0, llk 1,
kernel: IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0
kernel: (Sandbox) Sandbox: 5 duplicate reports for bluetoothd deny(1) mach-lookup com.apple.server.bluetooth
kernel: (Sandbox) Sandbox: com.apple.Ambien(237) deny(1) mach-lookup com.apple.windowserver
kernel: (AppleIntelFramebufferCapri) DRMStatus: iTunes/Apple Store Content Access Problem. Content playback may be disabled on this computer. You can continue to use the machine, but you should contact an Apple support representative. ErrorCode: 8877652

your Patch sections are not in the correct format

also no need for:

Code:

<dict>
                <key>Comment</key>
                <string>GFX0 to IGPU Rename</string>
                <key>Enabled</key>
                <true/>
                <key>Find</key>
                <data>R0ZYMA==</data>
                <key>Replace</key>
                <data>SUdQVQ==</data>
                <key>TableSignature</key>
                <data>RFNEVA==</data>
            </dict>
            <dict>
                <key>Comment</key>
                <string>PEGP to GFX0 Rename</string>
                <key>Enabled</key>
                <true/>
                <key>Find</key>
                <data>UEVHUA==</data>
                <key>Replace</key>
                <data>R0ZYMA==</data>
                <key>TableSignature</key>
                <data>RFNEVA==</data>
            </dict>

also have a read up on:

An iDiot's Guide To Lilu and its Plug-ins

An iDiot's Guide To Lilu and its Plug-in's Last Update: 22nd Jan 2021 (Add note about OpenCore config.plist modifications) About this Guide Note: This guide was written when Clover was the boot loader of choice as such the config.plist examples in this guide are mostley Clover specific ... if...

www.tonymacx86.com

saimon73 · Nov 9, 2023

Feartech said:
your Patch sections are not in the correct format

Thanks for you time.
I fixed... no result - no acceleration... i also stay 3 patch (sat0-sata, ehc0-ehc1,ehc2) and delete SSDT-IMEI

Feartech · Nov 9, 2023

you are missing your ig-platform id and possible device-id in your graphics section:

Code:

<key>PciRoot(0x0)/Pci(0x2,0x0)</key>
            <dict>
                <key>AAPL,slot-name</key>
                <string>Internal@0,2,0</string>
                <key>device_type</key>
                <string>VGA compatible controller</string>
                <key>model</key>
                <string>Intel HD Graphics 4000</string>
            </dict>

saimon73 · Nov 11, 2023

Feartech said:
you are missing your ig-platform id and possible device-id in your graphics section:

Thanks for you time.
i repeat changes with different combinations

saimon73 said:
changed ig-platform-id 0x0166000B/0x0166000A/0x01620005 (in HD4000 i73770T ID = 0x162)
changed device-id 0x0162/0x0166

no affect on Intel acceleration...
I added framebuffer patch 2048MB RAM to 1080P displays from "iDiot's Guide To Lilu" - no affect... (i have two display 1080 dvi/hdmi connection). Picture on both diplays is good, no artefacts...
Also i have 8 apples flashed about 1s in the second phase of startup and in hackintool i have "intel generation ???" in current framebuffer section, i don't know - it is important...
I have a question: do i need SSDT-IMEI with GPU section or enough device properties in config.plist?
I have no thoughts on how to make Intel acceleration work...

Feartech · Nov 11, 2023

saimon73 said:
Thanks for you time.
i repeat changes with different combinations

no affect on Intel acceleration...
I added framebuffer patch 2048MB RAM to 1080P displays from "iDiot's Guide To Lilu" - no affect... (i have two display 1080 dvi/hdmi connection). Picture on both diplays is good, no artefacts...
Also i have 8 apples flashed about 1s in the second phase of startup and in hackintool i have "intel generation ???" in current framebuffer section, i don't know - it is important...
I have a question: do i need SSDT-IMEI with GPU section or enough device properties in config.plist?
I have no thoughts on how to make Intel acceleration work...

Desktop Ivy Bridge | OpenCore Install Guide

saimon73 · Nov 12, 2023

Feartech said:
Desktop Ivy Bridge | OpenCore Install Guide

Thanks for you time.
I try "delete CpuPm/Cpu0ist" in ACPI/config.plist (i don't have it) - but it's no affect for anything, I think it's outdated...
Also I read dortania/FixingDRM "Don't use a Mac Mini SMBIOS on a desktop for example, as Mac Minis run mobile hardware and so macOS will expect the same" - this is lies... github/Whatevergreen recommended framebuffers 0x0166000A (default - macmini 6.1) for desktop...
Anyway I tried SMBIOS iMac 13.2 and ig-platform-id 0x01620005 - no affect...
Can somebody see my debug logs, ioreg in first post?... may be there are hints there why Intel acceleration doesn't work on my desk...

Feartech · Nov 12, 2023

saimon73 said:
Thanks for you time.
I try "delete CpuPm/Cpu0ist" in ACPI/config.plist (i don't have it) - but it's no affect for anything, I think it's outdated...
Also I read dortania/FixingDRM "Don't use a Mac Mini SMBIOS on a desktop for example, as Mac Minis run mobile hardware and so macOS will expect the same" - this is lies... github/Whatevergreen recommended framebuffers 0x0166000A (default - macmini 6.1) for desktop...
Anyway I tried SMBIOS iMac 13.2 and ig-platform-id 0x01620005 - no affect...
Can somebody see my debug logs, ioreg in first post?... may be there are hints there why Intel acceleration doesn't work on my desk...

missing your zipped EFI

saimon73 · Nov 12, 2023

Feartech said:
missing your zipped EFI

no problem

Feartech · Nov 12, 2023

saimon73 said:
no problem

should be using iMac13,1

may also need:
framebuffer-fbmem -> Data -> 00009000
framebuffer-stolenmem -> Data -> 00003001

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<< Solved >> Intel HD4000 no acceleration (Catalina/Big Sur)

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