DW1820a - the general troubleshooting thread

[Hervé]

The guide clearly illustrates the card's properties injection. Obviously, injecting the card's own id is useless and totally voids the desired effect which is to bypass AirPortBrcmNIC kext to load AirPortBrcm4360 instead. Can't say if your other diversions from my guide are the cause of your issue.

 

There are many posts in the previous 14pages of this thread relating to other id reference re: compatibility and/or pin masking. Please refer to those.

 

So many people have reported issues with those DW1820A cards by now, I feel sorry I ever recommended the model and tried to work things out.

[osxosx]

As I understood the main thing is (as @Hervé told now) to get AirPortBrcm4360 loaded, nothing else.

Then card should work.

 

I my case the card does not work, too. 4360 is loaded (per Info.plist modification).

[Franckenstien]

Thank you @Hervé 

This card works great in desktop with pci14e4,43a3 without problems at all , but when I swapped it to use in laptop I've used pci14e4,4353 and I got this hang and cpu usage 

I gave up , this card is not for laptop 

Have a good night

[osxosx]

@Hervé Please do not feel sorry! I think You are the reason why many other people are happy with this card!

Mine does not work, too, but I thank You - and all the other people at OSXL- which try to help us!

 

You are really great - never forget that!!

[DalianSky]

Some models of notebooks may need to cover the pins. Please refer to this link for details.

[Franckenstien]

Thank you very much @DalianSky 

It works  

Thanks to @Hervé as well for your amazing guide as usual ;

Good News 

I have masked the 3 pins in the card it was big challenge to mask such a very tiny pins but I did it and now everything works nicely, no more hangs , freeze  or CPU huge usage without reason 

Yes , It works and I am using it for more than an hour now  and I notice nothing wrong at all .

Thanks to @Naidis and his amazing post with photos here 

 

Problem Solved 

 

 

Page 3  post #6

[osxosx]

@Hervé Would be great, if You could update Your HowTo-Site with the results collected in this thread.

So, not everyone has to read 15 Pages to get the problem solved

 

P.S.: Masking only the 3 PINs at the one Side worked for me (DW1820a, Sub-ID 0021, 0VW3T3) too.

(With 5 PINs masked card could not get activated at macOS 10.14.6 Mojave)

 

Thanks,  @Franckenstien, for Your tries and hints!

[vichaos]

Yes, both bluetooth and wifi working perfectly after sleep&wake .

On 8/16/2019 at 8:25 PM, Hervé said:

Firmware v4689, right? How does Bluetooth work after Sleep & Wake?

 

[vichaos]

For wifi I accidentally able to get full speed (80MHz ~ 867Mbps) when booting via the clover from https://github.com/the-darkvoid/XPS9360-macOS/commit/c7149ab350682310bf2c091bc0a082cc8f9b66b8.(I was using this repo until my DW1520 break). I'm able to boot by just having brcmfx-driver=1 and added pci14e4,4353 device properties.  After boot up I saw that wifi interface was using AirPortBrcmNIC.kext instead of AirPortBrcm4360.kext and I'm able to get full wifi speed, but the system was getting freeze and hang very often especially when it's consuming high bandwidth 700-800Mbps for long periods. Do you guys have any suggestion? b/w I'm back to 40MHz for now because it's very stable and 300Mbps is not bad at all.

 

[Hervé]

I believe I had explained in may guide that combining compatibility with 14e4:4353 injection + boot parameter brcmfx-driver=1 caused issues to me. Try without the boot parameter.

 

What's interesting though -and that's probably key- is that your system runs Ok if you restrict the card to 40MHz. But is that on the 5GHz or, presumably, the 2.4GHz network band?