E6520 Battery Fix - DSDT

[tarfoh]

credits to rehabman for figuring this out.  

 

This patch fixed the X battery indicator on my E6520 (10.9 DP8).

 

 

DSDT patch - 

into_all all code_regex Mutex\s+\(([^,]*),\s+[^)]*\) replaceall_matched begin Mutex(%1, 0x00) end;

After that, find the BAT1 and BAT2 sections in your DSDT.  Transform the _STA methods in those devices to look like this:

   

Method (_STA, 0, NotSerialized)  // _STA: Status
{
       Return (Zero)
}

 

Make sure BAT0 is not altered at all while doing this.

 

Install the latest ACPIBatteryManager.kext

[olvidalo]

doesn't work on mine unfortunately. I get a disabled battery indicator 

 

Edit: I'm on Mavericks GM

[tarfoh]

can you post your DSDT and a kextstat

[olvidalo]

Thanks for looking into this. This is literally the only thing that is still wrong with my installation.

 

Here's original and the modded DSDT I'm using and a kextstat output..

dsdts.zip kextstat.txt

[telanx]

credits to rehabman for figuring this out.  

 

This patch fixed the X battery indicator on my E6520 (10.9 DP8).

 

 

DSDT patch - 

into_all all code_regex Mutex\s+\(([^,]*),\s+[^)]*\) replaceall_matched begin Mutex(%1, 0x00) end;

After that, find the BAT1 and BAT2 sections in your DSDT.  Transform the _STA methods in those devices to look like this:

   

Method (_STA, 0, NotSerialized)  // _STA: Status
{
       Return (Zero)
}

 

Make sure BAT0 is not altered at all while doing this.

 

Install the latest ACPIBatteryManager.kext

Hi, Thanks tarfoh & rehabman's great finding.

 

I am using a Dell E6320, I think it is more or less the same with E6520 of the Battery section in DSDT. so I just tried your method.

 

But after I applied the patch command in DSDT Editor, and compile, i got the errors like below:

 

then I tried to find out where is changed by this patch code. and after comparing with original DSDT file, I find:

 

after check back, i found several function name was change by this patch, so caused following function name lost definition, So, I just want to know why this areas need to be changed.

 

Could you please help to upload your original DSDT file ,and your modified file here, so I could check if there is anything wrong with my DSDT?

 

Thanks in advance.

 

Ps, my Original DSDT and modified DSDT list below:

DSDT-Or.aml.zip

DSDT-New.dsl.zip

[telanx]

Updated:

    I didn't modify my DSDT, and I just throw the ACPIBatteryManager.kext into S\L\E, it works fine....

 

I am using the 1.40 Version. But it only works when i boot osx without kextcache.....

 

Below is some pictures...

[filbip]

Works fine on Latitude E5520.

Thanks to tarfoh