FireWolf Pl.

After several weeks’ work with @lisai9093, now it’s time to post a guide. 😀

GUIDE: Intel HD Graphics 5500 on OS X Yosemite 10.10.3

 

Update Logs:

V1.2 @ 2015.06.07

Layout changes due to new themes.

minimum DVMT pre-allocated memory changes to (>=) 64MB

V1.1 @ 2015.04.24

Successful cases and related guides added.

More FAQ added.

V1.0 @ 2015.04.16

initial release

Successful cases so far:

Lenovo Thinkpad Carbon X1 3rd Gen:

Intel i7-5600U with Intel HD Graphics 5500 + 1080P internal display from jcsnider.

Dell XPS 13 Touch 2015:

Intel i7-5500U with Intel HD Graphics 5500 + 3200×1800 internal display (IOKit patch needed to unlock pixel clock frequency) from frizinko.

Dell inspiration 7548:

Intel i5-5200U with Intel HD Graphics 5500 + 1080P internal display from lisai9093.

Dell inspiration 7348/7352:

Intel i5-5200U/i7-5500U with Intel HD Graphics 5500 + 1080P internal display from Frankie.

Hmm, still no response from Intel HD Graphics 5300……

Before we get started:

The basic idea to make Broadwell’s integrated graphics card work does not change.

If you have Intel HD Graphics 5300 or other IGPU models supported by AppleIntelBDWGraphicsFramebuffer.kext, you can try it by yourself.

I also start new threads on both insanelymac and tonymacx86 forum.

http://www.insanelymac.com/forum/topic/305710-guide-intel-hd-graphics-5500-on-os-x-yosemite-10103/

http://www.tonymacx86.com/yosemite-laptop-support/162062-guide-intel-hd-graphics-5500-os-x-yosemite-10-10-3-a.html

Brief Introduction:

The basic idea to let Intel HD Graphics 5500 work is still injecting AAPL, ig-platform-id.

However, Apple raised the minimum stolen memory in the AppleIntelBDWGraphicsFramebuffer binary of OS X Yosemite 10.10.3. Kernel panic will happen if the DVMT pre-allocated memory in BIOS settings is lower than 64MB. This is not a big deal for Desktop PCs users, because one can easily change the DVMT pre-allocated memory in BIOS. But this is catastrophic for laptop users, because (1) the default value of DVMT pre-allocated memory in laptop BIOS is 32MB. (2) OEM will not unlock these advanced settings/menus for us. (3) We can try to modify BIOS but cannot pass the security check during flashing modified BIOS.

Detailed Step-by-step guide:

STEP 1: Check the current DVMT pre-allocated memory size.

Open the Screen Resolution window, click the Advanced settings and check Dedicated Video Memory.

After I played with changing DVMT pre-allocated memory in BIOS, the following pattern can be found.

If Dedicated Video Memory = 0MB, then DVMT pre-allocated memory in BIOS settings is 32MB.

If Dedicated Video Memory = 32MB, then DVMT pre-allocated memory in BIOS settings is 64MB.

If Dedicated Video Memory = 64MB, then DVMT pre-allocated memory in BIOS settings is 96MB.

If Dedicated Video Memory = 128MB, then DVMT pre-allocated memory in BIOS settings is 128MB.

TABLES: Relationship between Dedicated Video Memory detected by OS and DVMT pre-allocated memory in BIOS settings.

In general, if DVMT pre-allocated memory in BIOS settings is less or equal to 96MB, the StolenMemory that could be detected by OS is (DVMT – 32) MB.

If DVMT pre-allocated memory in BIOS settings is larger or equal to 128MB, the StolenMemory that could be detected by OS is (DVMT) MB. (equal to the value of DVMT pre-allocated memory)

Now let’s come back to our topic, Dedicated Video Memory >=64MB (i.e. DVMT pre-allocated memory >= 96MB) will pass the assertion/kernel panic.

Note that OS X can not boot on some laptops if DVMT pre-allocated memory is >= 128MB.

Therefore, if your current DVMT pre-allocated memory size < 64MB (i.e. Dedicated Video Memory <= 32MB), you can either choose using our patch in STEP 2.1 or changing DVMT pre-allocated setting in STEP 2.2

I suggest you change your DVMT settings in BIOS.

STEP 2.1: Apply the patch to pass the Stolen Memory assertion.

We need to patch AppleIntelBDWGraphicsFramebuffer binary file.

Find 39CF763C and replace it with 39CF773C.

Note that you can either use Hex Editor such as 0xED, Hex Fiend or Clover’s KextsToPatch to apply the patch above.

After using this patch, in theory you don’t have to change your BIOS settings. You can try to inject ig-platform-id and see what happens.

If you encounter some problems, try to modify Framebuffer data in AppleIntelBDWGraphicsFramebuffer binary.

Detailed information on Broadwell’s framebuffer can be found on this page.

STEP 2.2: Using EFI Shell to change DVMT settings in BIOS.

(1) Prepare a bootable USB drive with EFI Shell

Prepare a USB stick and format it with FAT32 filesystem.

Download this EFI shell and you can find a folder named BOOT after extracting.

Copy this BOOT folder to your USB stick.

(2) Dump/Fetch a completed BIOS file.

You can use specific BIOS utility to save a copy of your BIOS on Desktop.

e.g. For AMI Aptio UEFI BIOS, you can use AMI BIOS Utility.

(3) Extract BIOS Settings from a BIOS file.

Download UEFITools from https://github.com/LongSoft/UEFITool/releases

Open your BIOS file with UEFITools.

Find the module labeled with Setup and extract the PE32 image section in this module as a binary file.

Now, you will have a binary file on your Desktop. In my case, I name it Setup.bin.

Next, download the Universal IFR Extractor (Windows version only) from http://donovan6000.blogspot.ca/2014/02/universal-ifr-extractor.html or from here: Universal IFR Extractor.exe.

Open the Universal IFR Extractor in Windows, open the binary you just extracted from UEFITools and click Extract to save the BIOS settings in plain text format.

Now open the extracted setup IFR.txt and find the keyword “DVMT“.

And you can find the variable representing DVMT pre-allocated memory and its values.

In this case, DVMT pre-allocated memory’s variable is 0x1C3. The value of 96MB is 0x3. Record these two values.

Next, restart your computer and boot from the USB drive with EFI Shell.

Here, we use setup_var command to change our BIOS settings.

syntax: setup_var address value

OK, now type the command in EFI shell.

In this case, the command is setup_var 0x1C3 0x3. (Change the value of 0x1C3 to 0x3, which means changing the DVMT to 96MB.)

After changing the DVMT pre-allocated memory, go back to Windows and double check whether your current Dedicated Video Memory is 64MB. (96 – 32 = 64MB)

STEP 3: Injecting AAPL, ig-platform-id

You can use either Clover or DSDT/SSDTs to inject AAPL, ig-platform-id.

If you want to use Clover, let InjectIntel = True and ig-platform-id=0x16160002.

If you want to use DSDT/SSDT to inject AAPL, ig-platform-id, 0x16160002 is working fine.

Then open your DSDT, find Device (GFX0) or Device (IGPU) or Name (_ADR, 0x00020000) and add the Device-Specific Method.

Method (_DSM, 4, NotSerialized)
                    {
                        If (LEqual (Arg2, Zero))
                        {
                            Return (Buffer (One)
                            {
                                0x03
                            })
                        }

                        Return (Package (0x08)
                        {
                            "device-id",
                            Buffer (0x04)
                            {
                                0x16, 0x16, 0x00, 0x00
                            },

                            "AAPL,ig-platform-id",
                            Buffer (0x04)
                            {
                                0x02, 0x00, 0x16, 0x16
                            },

                            "model",
                            Buffer (0x17)
                            {
                                "Intel HD Graphics 5500"
                            },

                            "hda-gfx",
                            Buffer (0x0A)
                            {
                                "onboard-1"
                            }
                        })
                    }

Place your DSDT in /EFI/Clover/ACPI/Patched/

Restart your computer and you will find Intel HD Graphics 5500 is working now.

Some Issues you may encounter:

(1) Garbled Screen Issue

Enable Legacy Support in your BIOS settings.

(2) Screen Freeze Issue (GPU hang and restart)

Change DVMT pre-allocated memory back to 32MB and apply the patch. (Case from XPS13 2015)

OR

Restart from Windows. (i.e. Do not cold boot to OS X) or Wait for BIOS update from OEM. (Case from Dell Inspiration 7548)

(3) Kernel panic caused by CPUSensors.kext

Please delete CPUSensors.kext from FakeSMC.kext.

(4) Kernel panic caused by AppleACPIPlatform.kext and Machine Check at 0xHexAddress

You may encounter this issue after changing the BIOS (i.e. change DVMT settings in BIOS).

You can either removing custom DSDT.aml OR extracting NEW DSDT.aml from Windows (via AIDA64 or other utilities)

Reference and Special Thanks:

Thanks to Rehabman @ tonymacx86 for his advice on garbled screen issue.

Thanks to nguyenmac @ tonymacx86 for his clues on freeze issue.

Thanks to sontrg @ insanelymac for his direction to BIOS modification.

Thanks to Google for providing information.

Thanks to the-darkvoid @ tonymacx86 for his QHD+ Guide on HD4600.

[GUIDE] Intel HD Graphics 5500 on OS X Yosemite 10.10.3