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softhive Author

Level 1

8 points

Windows 10: BCM43xx S3 resume firmware initialization problem (MacBook Pro 15 mid 2014)

Hel!o!

Seems to be there is a serious bug in BCM43xx adapter firmware (MacBook Pro 15 mid 2014) resulting in failed S3 resume initialization (wake-up from Sleep) under Windows 10.

Detection algorithm:

1. Using Device Manager completely uninstall Broadcom 802.11ac network driver with option "Delete the driver software for the device".

2. Press "Scan for hardware changes" button to detect device instance named as "Network Adapter" and select "View" -> "Show hidden devices" from menu, so you can see only one "Network Adapter" device.

3. Put your computer into sleep mode by selecting "Power" -> "Sleep" from start menu and some times later resume it by pressing space bar for eg. Now you can see another detected (duplicated) "Network Adapter" device instance as active, but the first one becomes inactive. This is because failed adapter firmware initialization on S3 resume.

4. Reboot your computer, open Device Manager again with "View" -> "Show hidden devices" option to see (vice versa) the first "Network Adapter" device instance as active, but another one (duplicated) becomes inactive. As a result you always have annoying problem with wi-fi network connection after sleep mode until reboot.

Of course you can repeat steps with Broadcom 802.11ac network driver installed, it doesn't matter, because the Apple should provide us with firmware update to solve this hardware problem.

Any other ideas?

Best Regards.

MacBook Pro with Retina display, Windows 10

Posted on Jan 12, 2016 1:33 PM

46 replies

Nov 2, 2016 1:56 PM in response to softhive

Ok I'm going to have to keep an eye on this thread. I've been having wifi issues since I bought my later rMBP 15' 2013. I took it into repair and they put in a new card and it still does the same thing.

The main issues I'm having are..

-- When waking from sleep wifi seems connected but I get no internet activity. (My solution was to turn the wifi off and back on again)

-- Connecting external storage sometimes effects the internet and sometimes I have to force it to unmount. (Turning off wifi solves this issue.)

-- When bluetooth is on and I stream to the Apple TV my internet speed drops down to 3-5Mbps sometimes it's dead. (I have a 50Mbps connection...)

Windows 10: BCM43xx S3 resume firmware initialization problem (MacBook Pro 15 mid 2014)