Acer Aspire E5-471G Audio & Graphics Problem

[cathay2582]

Acer Aspire E5-471G Audio (ALC283) & Graphics (HD4400) Problem

Finally I can install the Yosemite in my laptop with UEFI mode, thank you RehabMan. but I still have some problem can't solve.
I don't know my audio device whether is ALC283

and the Graphics have some strange when I startup in normal

 

[RehabMan]

Finally I can install the Yosemite in my laptop with UEFI mode, thank you RehabMan. but I still have some problem can't solve.
I don't know my audio device whether is ALC283

According to the screen shot, it is ALC283.

and the Graphics have some strange when I startup in normal

The sticky posts have useful information. You should read them.

http://www.tonymacx86.com/yosemite-laptop-support/145308-guide-resolve-boot-screen-garble.html

 

[cathay2582]

According to the screen shot, it is ALC283.

I found a way to try to patch but it the problem is still there...
http://www.insanelymac.com/forum/topic/298819-yosemite-audio-realtek-alc-applehda/
How can I find my audio codec?

and the AppleHDA.kext not be loaded, is this normal?

 

[RehabMan]

I found a way to try to patch but it the problem is still there...
http://www.insanelymac.com/forum/topic/298819-yosemite-audio-realtek-alc-applehda/
How can I find my audio codec?

and the AppleHDA.kext not be loaded, is this normal?

You could try the same technique I use on the u430 (it also has ALC283). See patch_hda.sh: https://github.com/RehabMan/Lenovo-U430-Touch-DSDT-Patch

 

[cathay2582]

You could try the same technique I use on the u430 (it also has ALC283). See patch_hda.sh: https://github.com/RehabMan/Lenovo-U430-Touch-DSDT-Patch

It's still not working and the AppleHDA.kext and AppleHDA_ALC283.kext is not be loaded

 

[RehabMan]

It's still not working and the AppleHDA.kext and AppleHDA_ALC283.kext is not be loaded

Make sure you do the necessary DSDT patches (audio layout 86, "IRQ Fix"). Make sure it is installed to /S/L/E. Make sure vanilla AppleHDA is installed. Make sure config.plist has the associated AppleHDA patches. Repair permissions & rebuild cache, reboot 2x.

 

[cathay2582]

Make sure you do the necessary DSDT patches (audio layout 86, "IRQ Fix"). Make sure it is installed to /S/L/E. Make sure vanilla AppleHDA is installed. Make sure config.plist has the associated AppleHDA patches. Repair permissions & rebuild cache, reboot 2x.

After I tried it's still no sound device, but I can see the AppleHDA_ALC283.kext is loaded and see some port

 

[RehabMan]

After I tried it's still no sound device, but I can see the AppleHDA_ALC283.kext is loaded and see some port

Download patchmatic: https://github.com/RehabMan/OS-X-MaciASL-patchmatic.
Extract the 'patchmatic' binary from the ZIP. Copy it to /usr/bin, such that you have the binary at /usr/bin/patchmatic.

In terminal,

rm -Rf ~/Downloads/RehabMan
mkdir ~/Downloads/RehabMan
cd ~/Downloads/RehabMan
patchmatic -extract

Post contents of Downloads/RehabMan directory (as ZIP).

Also, post ioreg: http://www.tonymacx86.com/audio/58368-guide-how-make-copy-ioreg.html. Please, use the IORegistryExplorer v2.1 attached to the post! DO NOT reply with an ioreg from any other version of IORegistryExplorer.app.

 

[cathay2582]

Download patchmatic: https://github.com/RehabMan/OS-X-MaciASL-patchmatic.
Extract the 'patchmatic' binary from the ZIP. Copy it to /usr/bin, such that you have the binary at /usr/bin/patchmatic.

In terminal,

rm -Rf ~/Downloads/RehabMan
mkdir ~/Downloads/RehabMan
cd ~/Downloads/RehabMan
patchmatic -extract

Post contents of Downloads/RehabMan directory (as ZIP).

Also, post ioreg: http://www.tonymacx86.com/audio/58368-guide-how-make-copy-ioreg.html. Please, use the IORegistryExplorer v2.1 attached to the post! DO NOT reply with an ioreg from any other version of IORegistryExplorer.app.

I see the IORegistryExplorer.app in the post is 2.1...

 

[RehabMan]

I see the IORegistryExplorer.app in the post is 2.1...

Your patch for injecting layout-id is incorrect. It is referencing DTGP which is not defined anywhere. As a result, it will always fail.

...

DSDT patches you need for AppleHDA: https://github.com/RehabMan/Laptop-DSDT-Patch
Apply: "Audio Layout 12" (change layout-id from 12 to the layout-id used by the patched AppleHDA)
Apply: "IRQ Fix"

Determine layout-id from patched AppleHDA.kext:

First you need to know your codec id in decimal. Then look in the Info.plist for AppleHDAHardwareConfigDriver.kext (in PlugIns), find your codec id under HDAConfigDefault (there may be many entries in a sloppy patched AppleHDA or only one). The LayoutID that matches your codec id is the layout id you need.