T450 HD5500 graphics glitch

[raj.tamil]

Download patchmatic: https://bitbucket.org/RehabMan/os-x-maciasl-patchmatic/downloads/RehabMan-patchmatic-2015-0107.zip
Extract the 'patchmatic' binary from the ZIP. Copy it to /usr/bin, such that you have the binary at /usr/bin/patchmatic.

In terminal,

if [ -d ~/Downloads/RehabMan ]; then rm -R ~/Downloads/RehabMan; fi
mkdir ~/Downloads/RehabMan
cd ~/Downloads/RehabMan
patchmatic -extract

Note: It is easier if you use copy/paste instead of typing the commands manually.

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.

And output from:

kextstat|grep -y acpiplat
kextstat|grep -y appleintelcpu
kextstat|grep -y applelpc

[
Also, post EFI/Clover folder.

posting the requested files

 

[RehabMan]

posting the requested files

PM looks ok, as does backlight. You might try setting Options for IntelBacklight.kext to 0x02. And you could try using the PWMMax from BIOS (PWMMax=0).

There is example/documentation in the IntelBacklight README for overriding these configuration items in ACPI.

You will need to build the current kext, as the Options=0x2 feature is not in the current build.

 

[raj.tamil]

PM looks ok, as does backlight. You might try setting Options for IntelBacklight.kext to 0x02. And you could try using the PWMMax from BIOS (PWMMax=0).

There is example/documentation in the IntelBacklight README for overriding these configuration items in ACPI.

You will need to build the current kext, as the Options=0x2 feature is not in the current build.

Setting the Options=0x2 feature provides what benefit ?

 

[RehabMan]

Setting the Options=0x2 feature provides what benefit ?

It will rewrite the LEVW register on each brightness setting.

https://github.com/RehabMan/OS-X-Intel-Backlight/commit/c1f37ecaf35e4e0b44c98abbef507d759ca73859

 

[raj.tamil]

It will rewrite the LEVW register on each brightness setting.

https://github.com/RehabMan/OS-X-Intel-Backlight/commit/c1f37ecaf35e4e0b44c98abbef507d759ca73859

ok will try to implement this method . Have noticed another behaviour with the system and let me know if this is correct. When i boot the laptop with the lid open and login to the desktop and close the lid which works without any glitches i find in the system preference => Display option that it does list the internal laptop display pref and the external monitor pref also. Is this the expected behaviour.

 

[RehabMan]

ok will try to implement this method . Have noticed another behaviour with the system and let me know if this is correct. When i boot the laptop with the lid open and login to the desktop and close the lid which works without any glitches i find in the system preference => Display option that it does list the internal laptop display pref and the external monitor pref also. Is this the expected behaviour.

It probably is not detecting your LID closed.

 

[raj.tamil]

It probably is not detecting your LID closed.

I am able to close the lid without external monitor attached and the laptop goes to sleep. would this still be a lid not detecting to verify.

 

[RehabMan]

I am able to close the lid without external monitor attached and the laptop goes to sleep. would this still be a lid not detecting to verify.

Something else then...

 

[raj.tamil]

Something else then...

Any pointers that I may need to check

 

[RehabMan]

Any pointers that I may need to check

Not that I can think of right now...