********************
** Used hardware  **
********************
 * MB : Gigabyte G31M-ES2L rev2.3 [according to spec its identical to rev2.0 but not to 1.0!]
 * CPU: Intel Core2Quad Q6600 2.4Ghz@3.2Ghz
 * GPU: Patriot 2x2GB OC Edition
 * GPU: nVidia GeForce 9800GT [reference]
 * HDD: WD Corp. 500GB SATA
 * ODD: Unknown LG on SATA
 * OTH: Edimax EW-7318USn - works after installing official drivers from edimax website
 		Antec Fusion Remote LCD - I have no idea, doesnt work


****************************
** For who this guide is? **
****************************
So, its for begginers and for everyone who have problems with sleep and sound on this motherboard.


**********************
** Before you start **
**********************
Get 8GB+ pendrive and restore 10.6.3 DMG on it using Disc Utility. Next install myHack 1.1 TO USB DRIVE. Remeber to UNCHECK SleepEnabler, if you are luck or you decide to buy correct GPU you can also uncheck graphic disabler and check graphic enabler.

Download pack of files: http://priv.ne0.pl/OSX/G31M-ES2L-1066-v2.zip [-1055.zip has been broken, sry :(]
Download 10.6.5 combo update from Apple website: http://support.apple.com/kb/dl1349


**********
** BIOS **
**********
Before configuring bios insert your pendrive (now can be empty or already prepared to install)
First load optimized default

=> Standard CMOS Features and change:
 * Drive A - None [can cause problems and none use it]
 * Halt On - No Errors [with some usb kb bios reports no kb and show "Press F1 to con..." lol :) ]

=> Advanced Bios Features
 * Enter HardDisk Boot Priority and make sure about selection [mac os hdd must be at 1st position - skip this step if you have one hdd]
 * First boot device to Hard Disk
 * Second and Third can be Disabled or whatever you wish
 * HDD SMART... recommended to be Enabled

=> Integrated Peripherals
 * On-Chip SATA mode - Enhanced
 * USB Keyboard Support - Leave Disabled (yes, I have USB kb)
 * USB Mouse Support - Leave Disabled
 * You can turn off Onboard Serial & Paralle Port for faster booting

=> Power Management Setup
 * Disable Power On by Ring
 * HPET Mode - 64 bit mode
 * If you are not using Wake On LAN Enable EUP [last entry]

=> PC Health Status
 * This settings are not required by OS X but for your safe apply it
 * CPU Warning Temp. - 70*C for Dual Core Series CPU`s, 80* for Core2Duo CPU`s and 90* for Quads
 * CPU Fan Fail Warn - Enabled


******************
** Installation **
******************
Boot from already prepared pendrive [its under Hard-Drive section - not USB-HDD] using boot menu (hit F12 few times during POST check). After myHack bootloader appears press any key and type "-v" on keyboard (without " "), now just press enter.
Wait for boot process complete, chose language and click Utilities then chose Disk Utility. Format your harddrive, remember about GUID scheme (instead of MBR).
Close disk utility and make normal install. After it make boot from USB chosing Macintosh HD instead of Mac OS X Install DVD.
Now install 10.6.6 combo update downloaded from Apple website, reboot using pendrive selecting Macintosh HD.


*****************
** Postinstall **
*****************
Install Chamelon - just double click Chameleon-2RC5-b699 file and follow on-screen instruction. On last screen installer ask for logout - do it and log in again.
Create folders: /Extra/, /Extra/Extensions/ and /Extra/Themes
Copy Default to /Extra/Themes/
Copy FakeSMC and ALC8xxHDA to /Extra/Extension/
Copy dsdt.aml to /Extra/
Copy AtherosL1cEthernet to /System/Library/Extensions
Copy com.apple.Boot.plist to /Library/Preferences/SystemConfiguration/ replacing old one
Install AppleHDA_Rollback.pkg
Run pfix, type you password (it`s not visible during typing) and select option "1"
Optional you can install Chameleon.prefPane (Advanced tools folder)

REBOOT AND ENJOY :)
p.s. If you have no lan after reboot enter System preferences > Newtwork and card "magically" appears. Of course you must do only one time, not every reboot :)


***************************
** ...there is no audio! **
***************************
Gigabyte specs is not always true. Eg. my motherboard according to specs has ALC883 codec but in real it`s ALC888b - big diff!
In this case you must delete /Extra/dsdt.aml and copy dsdt-888b.aml from Advanced tools to /Extra/ renaming it to dsdt.aml. Reboot and try to ply music as loud as possible ;]

**************
** Own DSDT **
**************
If you still have no audio/cpu is hot (no power mgmt)/kernel panic with HPET or AppleIntelPowerManagment error you must prepare your own DSDT. It`s for advanced users :)
You must run linux (best way is Ubuntu 10.04 live cd), open terminal and type:

sudo bash
apt-get install iasl
cat /proc/acpi/dsdt > dsdt.bin
iasl -d dsdt.bin

Copy dsdt.dsl (not .bin) from your home folder to pendrive or sth.
You can also do it on windows using DSDTSE (you can download it from http://www.osx86.es/?p=883), run it and click Tools > Extract DSDT (not tested - I have no windows at home ;])

Now boot installed OSX from pendrive and run DSDT Auto-Patcher. Uncheck Extract DSDT from system and select extracted dsdt.dsl above.
Select vendor (Gigabyte) and model (G31M-ES2L), click Apply and wait. Program save your dsdt.aml on Desktop, just copy it to /Extra.
Hardest part - sound card. Gigabyte mounts 2 sound chips - ALC883 and ALC888b (ident as. ALC887 on Linux which is OK). But in specs inform only about ALC883 ... sh#t.
Install DSDTSE and run it (it`s under Application menu). Now click File -> Open .aml and select /Extra/dsdt.aml file. At right side of new window select Sound AZALIA and replace this section (from Device (AZAL) to new line above NAME (BUFA,.....)) with this code for your sound chip. (You can identify it under linux typing in terminal: cat /proc/asound/card0/codec#* | grep Codec).
For ALC883 use code from 883_patch.txt, for ALC888b use code from 888b_patch.txt. Now click "Comile DSDT", wait ~20 sec, next windows appears, wait next 10-20 seconds for Finder windows. Drag&drop dsdt.aml from openned folder to /Extra and replace old one.
Cross fingers and reboot.
Now you have hacMac without sleep. If you want to enable sleep it`s a hardcore way to do this :D
Follow steps below:

In _PTS section change content of  If(LEqual(Arg0,0x05)) to:
 Store (One, \_SB.PCI0.PX40.AG3E)
 Store (Zero, SLPE)
 Sleep (0x10)

Remove Device (GIGE)
Remove "GP9, 1," from OperationRegion (GPIO, SystemIO, 0x0800, 0x06)
Add code after Device (PMIO):
 OperationRegion(LPC0, PCI_Config, 0xA4, 0x02)
 Field (LPC0, ByteAcc, NoLock, Preserve)
 {
  AG3E, 1
 }

Add code after Device (PCI0.EXPL):
 Device (MECEH)
 {
  Name (_HID, Eisald("APP0006"))
  Name (_GPE, 0x17)
  Name (_STA, 0x08)
 }

Search for first PCI0.USB3 and change to PCI0.UHC3
In method _L0E change USB3 to UHC3
Find Device (LPCB) and rename to Device (PX40)
=> Field (\_SB.PCI0.LPCB.PREV change to Field (\_SB.PCI0.PX40.PREV
=> Field (\_SB.PCI0.LPCB.PIRQ change to Field (\_SB.PCI0.PX40.PIRQ
=> Field (\_SB.PCI0.LPCB.PIR2 change to Field (\_SB.PCI0.PX40.PIR2
=> Field (\_SB.PCI0.LPCB.LPIO change to Field (\_SB.PCI0.PX40.LPIO
Change OperationRegion (GPIO, SystemIO, 0x0800, 0x06) to OperationRegion (GPIO, SystemIO, 0x0800, 0x05) [0x06 to 0x05]
Rename Device (USB3) to Device (UHC4)
Rename Device (PRIM) to Device (PRT0)
Rename Device (SECD) to Device (PRT1)


Now compile DSDT, copy to /Extra and reboot ... if no sleep or compilation error just contact me - MAYBE I can help you.
I also attached Apple File Merge tool - it`s useful tool to compare two DSL files (decompiles AML).


**************************
** Whats works/what no? **
**************************
+ 64bit mode
+ 32bit mode
+ Lan
+ GPU with QE/CL [9800GT]
+ WiFi
+ CPU
+ Reboot
+ Shutdown
+ Sleep!
+ USB (w/front)
+ Sound
- iMon LCD in Antec Fusion Remote case
- Build-in GPU - Intel GMA3100 (I naver searched for kexts to run it)


*****************
** Author note **
*****************
I'm Polish so my language is not perfect but I hope that the guide would be helpful bcs I spent 21 hours testing many combinations on 10.6.5 and extra few hours to update instruction to be as perfect as possible with 10.6.6 ;)
...and extra few hours on DSDT ;p
Feel free to contact me at grzegorz129@gmail.com