Nosnibor35

Here is a guide to performing a DSDT override with hopefully less misery, and setting up your computer to have your iGPU, dGPU, and eGPU working at the same time! Oh boy this is going to be fun.

This is my system specs (Fujitsu T901):

i7-2620M

16GB RAM

NVS 4200M

GTX 660 Ti

Windows 7 Enterprise x64

Now it begins..

Disconnect your eGPU until I say so.

If you can, you should perform a DSDT override. The method shown in the official thread was really hard... so I did it another way that is MUCH easier (and is good about fixing errors).

How to perform a DSDT override:

Get the 'DSDTEditor-Linux-Mac-Win.7z' here:

DSDTEditor-Linux-Mac-Win.7z

(source: olarila.com • View topic - DSDT editor and patcher) I included the asl.exe file required as well to the zip in with the program's folder.

1. Run DSDT Editor.bat

2. File -> Extract DSDT

3. Wait a bit, then click 'Device PCI0' - it should be just after your Processor.

4. Scroll down until you see your DWordMemory stuff, go to the bottom of this list.

5. At the bottom add:

0x0000000000000000, // Granularity
0x0000000C20000000, // Range Minimum
0x0000000E0FFFFFFF, // Range Maximum
0x0000000000000000, // Translation Offset
0x00000001F0000000, // Length
,, , AddressRangeMemory, TypeStatic)

                QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite,

6. I made it look nice and pretty after pasting that in (made it match).

(These next steps are optional I think, I have no idea if they are necessary, but I did them.)

o1. IASL -> Compile (or hit F5)

o2. Fix erros if you have any.

(Back to important stuff.)

7. File -> Save DSL as..

(I named mine dsdtoverride.dsl - I will use this name for future steps - I would put this file in the DSDT program directory with asl.exe and iasl.exe)

8. Close the DSDT editor.

9. Open up command prompt (maybe as admin? probably a good idea).

10. Go to where you saved your dsdtoverride.dsl (in command prompt).

11. In command prompt run:

iasl dsdtoverride.dsl

(Make sure the previous command made a .aml file. It may have made the name as dsdtoverride.aml, but mine was dsdt.aml)

12. Then run

asl /loadtable dsdt.aml

Reboot and check for a 'Large Memory' section in Device Manager -> Resources by Connection -> Memory

[ATTACH=CONFIG]7310[/ATTACH]

Hello angerthosenear and Tech Inferno Fan,

Just wanted to say that I have a Sony Vaio VPCS12 (S series) notebook and I was getting the Code 12 message constantly. After guidance from Tech Inferno Fan to run the DSDT Override (as one of my options) that fixed my issue. So thanks Tech Inferno Fan for the advice and thanks angerthosenear for the simplified instructions to perform it

Cheers

Martin