It is a perfect hackintosh box. The wifi speed is about 800Mbps in Mac OS X. The wifi card is BCM943602CS.
I am trying to install Ubuntu 22.04, the problem is that the wifi speed is not stable, the speed is about 1xx Mbps to 3xx Mbps.
I have googled to find the solution. What I have tried:
- Turn off power management: it did work, the speed increased somehow.
- Install firmware-b43-installer: no difference.
lspci -knn | grep Net -A3
05:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43602 802.11ac Wireless LAN SoC [14e4:43ba] (rev 01)
Subsystem: Apple Inc. BCM43602 802.11ac Wireless LAN SoC [106b:0133]
Kernel driver in use: brcmfmac
Kernel modules: brcmfmac
And I checked the boot log, there is no difference between with or without installation of firmware-b43-installer.
sudo dmesg | grep brcm
12 Reset to defaultusbcore: registered new interface driver brcmfmac
brcmfmac 0000:05:00.0: enabling device (0000 -> 0002)
brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43602-pcie for chip BCM43602/1
brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.Acidanthera-iMac17,1.bin failed with error -2
brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.Acidanthera-iMac17,1.txt failed with error -2
brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.txt failed with error -2
brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43602-pcie for chip BCM43602/1
brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available
brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43602/1 wl0: Nov 10 2015 06:38:10 version 7.35.177.61 (r598657) FWID 01-ea662a8c
brcmfmac 0000:05:00.0 wlp5s0: renamed from wlan0
ieee80211 phy0: brcmf_inetaddr_changed: fail to get arp ip table err:-52
