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Disable AMD TeraScale 2 GPUs in MacBook Pros

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Mykola Grymalyuk
2021-04-24 08:33:55 -06:00
parent 5005d1f1eb
commit 6a357d8cdf
3 changed files with 10 additions and 19 deletions
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1
CHANGELOG.md
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@@ -15,6 +15,7 @@
- Fix AppleALC support in Mojave
- Fix TeraScale 1 GPU detection
- Enable Graphics Acceleration on legacy GPUs by default
- Automatically disable AMD TeraScale 2 GPUs in MacBook Pros
## 0.1.0
- Fix crash on iMacs with Metal GPUs

24
Resources/Build.py
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@@ -512,25 +512,11 @@ class BuildOpenCore:
plistlib.dump(agpm_config, Path(new_agpm_ls).open("wb"), sort_keys=True)
plistlib.dump(amc_config, Path(new_amc_ls).open("wb"), sort_keys=True)
#if self.model in ModelArray.SandyIGPU:
# print("- Adding AppleIntelSNBGraphicsFB patch")
# if self.model == "MacBookPro8,1":
# x = b'Mac-94245B3640C91C81'
# elif self.model == "MacBookPro8,2":
# x = b'Mac-94245A3940C91C80'
# elif self.model == "MacBookPro8,3":
# x = b'Mac-942459F5819B171B'
# elif self.model == "MacBookAir4,1":
# x = b'Mac-C08A6BB70A942AC2'
# elif self.model == "MacBookAir4,2":
# x = b'Mac-742912EFDBEE19B3'
# elif self.model == "Macmini5,1":
# x = b'Mac-8ED6AF5B48C039E1'
# elif self.model == "Macmini5,3":
# x = b'Mac-7BA5B2794B2CDB12'
# self.get_item_by_kv(self.config["Kernel"]["Patch"], "Identifier", "com.apple.driver.AppleIntelSNBGraphicsFB")["Enabled"] = True
# self.get_item_by_kv(self.config["Kernel"]["Patch"], "Identifier", "com.apple.driver.AppleIntelSNBGraphicsFB")["Find"] = binascii.unhexlify(str(binascii.hexlify(x),'ascii'))
# self.get_item_by_kv(self.config["Kernel"]["Patch"], "Identifier", "com.apple.driver.AppleIntelSNBGraphicsFB")["Replace"] = binascii.unhexlify(str(binascii.hexlify(self.spoofed_board.encode()),'ascii'))
if self.model in ["MacBookPro8,2", "MacBookPro8,3"]:
print("- Disabling unsupported TeraScale 2 dGPU")
self.config["NVRAM"]["Add"]["FA4CE28D-B62F-4C99-9CC3-6815686E30F9"]["gpu-power-prefs"] = binascii.unhexlify("01000000")
self.config["NVRAM"]["Delete"]["FA4CE28D-B62F-4C99-9CC3-6815686E30F9"] += ["gpu-power-prefs"]
self.config["DeviceProperties"]["Add"]["PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)"] = {"name": binascii.unhexlify("23646973706C6179"), "IOName": "#display", "class-code": binascii.unhexlify("FFFFFFFF")}
@staticmethod
def get_item_by_kv(iterable, key, value):

4
payloads/Config/config.plist
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@@ -1084,6 +1084,8 @@
<key>csr-active-config</key>
<data>AAAAAA==</data>
</dict>
<key>FA4CE28D-B62F-4C99-9CC3-6815686E30F9</key>
<dict/>
</dict>
<key>Delete</key>
<dict>
@@ -1101,6 +1103,8 @@
<array>
<string>boot-args</string>
</array>
<key>FA4CE28D-B62F-4C99-9CC3-6815686E30F9</key>
<array/>
</dict>
<key>LegacyEnable</key>
<false/>