ridha@linux-35fx:~> dmesg | grep -C5 b43
[    4.446997] [drm] RC6 disabled, disabling runtime PM support
[    4.447396] [drm] Initialized i915 1.6.0 20170818 for 0000:00:02.0 on minor 0
[    4.447735] ACPI: Video Device [VID] (multi-head: yes  rom: no  post: no)
[    4.448462] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:00/input/input6
[    4.448709] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    4.459962] b43-phy0: Broadcom 4312 WLAN found (core revision 15)
[    4.472131] fbcon: inteldrmfb (fb0) is primary device
[    4.503563] b43-phy0: Found PHY: Analog 6, Type 5 (LP), Revision 1
[    4.503578] b43-phy0: Found Radio: Manuf 0x17F, ID 0x2062, Revision 2, Version 0
[    4.516918] Broadcom 43xx driver loaded [ Features: PNLS ]
[    4.521386] b43 ssb0:0: Direct firmware load for b43/ucode15.fw failed with error -2
[    4.521403] b43 ssb0:0: Direct firmware load for b43/ucode15.fw failed with error -2
[    4.521423] b43 ssb0:0: Direct firmware load for b43-open/ucode15.fw failed with error -2
[    4.521436] b43 ssb0:0: Direct firmware load for b43-open/ucode15.fw failed with error -2
[    4.521438] b43-phy0 ERROR: Firmware file "b43/ucode15.fw" not found
[    4.521439] b43-phy0 ERROR: Firmware file "b43-open/ucode15.fw" not found
[    4.521441] b43-phy0 ERROR: Please open a terminal and enter the command "sudo /usr/sbin/install_bcm43xx_firmware" to download the correct firmware for this driver version. For an off-line installation, go to http://en.opensuse.org/HCL/Network_Adapters_(Wireless)/Broadcom_BCM43xx and follow the instructions in the "Installing firmware from RPM packages" section.
[    4.676035] usb 5-5: new high-speed USB device number 2 using ehci-pci
[    4.776036] usb 1-1: new full-speed USB device number 2 using uhci_hcd
[    4.832136] firewire_core 0000:0f:00.3: created device fw0: GUID 424fc0003c04e281, S400
[    4.862508] raid6: sse2x1   gen()  3071 MB/s
[    4.894601] PM: Starting manual resume from disk