** NVIDIA Quadro K5000M Mac Edition ROM **
Genuine Native Boot Screen & Brightness Control
Genuine Native Boot Screen & Brightness Control
I've tested and put together the following ROM for the NVIDIA Quadro K5000M which will allow:
Genuine native brightness control
Genuine ‘gray’ early-boot screen
This ROM will allow full boost and not be crippled by the P5 state bug on OpenGL tasks.
This is a FAST card!
Pre-installation Requirements:
- iMac12,2 (27-inch Mid 2011) Mac-942B59F58194171B (Tested machine)
- BootROM:
87.0.0.0.0. Please use High Sierra to update your BootROM to latest version.- GPU variant: N14E-Q5-A2
-VRAM type:
I've made sure that the rom will report the correct size of vram: 4096MB.
I've tested it on a Windows 7 partition installation and works fine with Nvidia Quadro Driver version: 377.11 and BootCamp installtion: 5.0.5033
Post-installation Requirements:
Brightness Control Stepping Mod:
-Turn computer on, hold down Command(⌘)-R
-Choose Utilities > Terminal
-Enter:
csrutil disable-MacOS Catalina: requires you to make root writeable:
sudo mount -uw /-Reboot
-Download and open 'Kext Utility v2.6.6'
-Navigate to S/L/E (System/Library/Extensions)
-Copy "AppleBacklight.kext" to Desktop
-Edit:
AppleBacklight.kext/Contents/Info.plist-Scroll down to:
IOKitPersonalities > AppleIntelPanelA > ApplePanels -There you find several Apple LCD profiles.
-For the iMac 2011 27" machine locate:
Code:
<key>F10Ta007</key>
<data>
ABEABgALABQAHAAnADMAPwBOAFwAZwBzAIEAkQClAL8A2wD/
</data>-Change the <data> section to:
ABEAAgA3AF8AigCzAOsBJAFnAakB1AIJAlQCogL4A00DlgRpBGk=-Drag your modded kext into Kext Utility, allow it correct permissions
-Applebacklight.kext.bak folder will be created
-Reboot
The above data pattern will allow for a wider span of steppings for the brightness control and utilizes more of the capacity of the HD3000. If you have a different machine, your panel ID can be found by going to
System Preferences > Displays > Color > Open Profile > mmodCaveats post-install/Bugs:
The EFI rom unfortunately is based on a very old implementation of Tianocore, so a 16bit resolution glitch of UGA_DRAW_PROTOCOL is still present until I find a way to reprogram that. I'm loading the EFI module externally in a shell now to see why the EDID information is not being extracted properly.
Temporary solution: activate a sleep cycle and return, this should now clear the issue.
As stated previously these cards are based on a WSON flash package and therefore are much more difficult to recover from a bad flash. Please take precautions and verify flashing before rebooting.
**update**
4/28/2021: K5000M_V2.rom, mem clock: 1700Mhz, Tdp: 692.5Mhz @ 975mV speed tweaks and stability gameplay steam.
"insanely great!"
-Steve Jobs
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