Add workaround for BCM4377b Wi-Fi failing after lid close#688
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herzj-tcd wants to merge 2 commits intot2linux:masterfrom
Open
Add workaround for BCM4377b Wi-Fi failing after lid close#688herzj-tcd wants to merge 2 commits intot2linux:masterfrom
herzj-tcd wants to merge 2 commits intot2linux:masterfrom
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Add BCM4377b lid close Wi-Fi fix
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Adds documentation for a known issue on T2 Macs with the BCM4377b Wi-Fi chip (confirmed on MacBookAir9,1) where brcmfmac fails to enter D3 power state during suspend, leaving Wi-Fi and Bluetooth unresponsive after the lid is opened.
The root cause is a Broadcom firmware bug that has been reported upstream but has no fix available. The workaround involves forcing s2idle sleep and using a post-resume systemd script to rebind the driver and reload the firmware.