Driver rtw88 wifi RTL8821CE

judd

As a first step, install the firmware package, as the firmware comes by default in the kernel, but is not enabled due to licensing issues:

$ ls -al /boot/kernel/if_rtw88.ko -r--r--r-- 1 root wheel 1185856 26 Dec. 04:37 /boot/kernel/if_rtw88.ko

Then install the driver:

pkg install wifi-firmware-rtw88-kmod

From Realtek RTW88 FreeBSD wiki "Currently known issue":

Does not work on machines with more than 4GB of physical memory. Likely busdma+LinuxKPI problem to be investigated. D34715 has a change to gather data (which is in freebsd/main by now).

You need to boot with compat.linuxkpi.skb.mem_limit=1 in loader.conf to limit DMA to 32bit (announcement on freebsd-wireless for more info).

/boot/loader.conf:

compat.linuxkpi.skb.mem_limit=1

reboot system, see if the driver has attached to the device, if not, try:

kldload if_rtw88

Source: https://forums.freebsd.org/threads/driver-rtw88-wifi-rtl8821ce.93184/

wastlnd

Unfortunately this didn't work for me, network manager starts to detect the available wireless network but when I try to connect to mine I get an "authentication failed" message. Running bsdconfig netdev shows that DHCP is disabled for wlan0 interface and using wifimgr fails too.