BCM4360 wireless not working after install

Issues & Assistance Networking Support
1

Hi, I decided to install Garuda KDE Dr46onized because I really liked what I saw while testing the live media. My WiFi adapter was recognised during testing and I was able to join my home network no problem, but since installing I have to 'modprobe brcmfmac' after every reboot. What's the best way to automate this command on each startup?

I've seen this asked in a few similar threads, so here's the output of inxi -Fxxxza :

System:
  Kernel: 5.10.2-104-tkg-bmq x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: intel_pstate=passive 
  BOOT_IMAGE=/@/boot/vmlinuz-linux-tkg-bmq 
  root=UUID=e0fa4565-685f-4ef3-8124-181edfbca9b8 rw rootflags=subvol=@ 
  quiet splash rd.udev.log_priority=3 vt.global_cursor_default=0 
  systemd.unified_cgroup_hierarchy=1 loglevel=3 
  Desktop: KDE Plasma 5.20.4 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 
  dm: SDDM Distro: Garuda Linux 
Machine:
  Type: Laptop System: Dell product: XPS 15 9550 v: N/A serial: <filter> 
  Chassis: type: 9 serial: <filter> 
  Mobo: Dell model: 0N7TVV v: A00 serial: <filter> UEFI: Dell v: 1.13.1 
  date: 12/12/2019 
CPU:
  Info: Quad Core model: Intel Core i7-6700HQ bits: 64 type: MT MCP 
  arch: Skylake-S family: 6 model-id: 5E (94) stepping: 3 microcode: E2 
  L2 cache: 6 MiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 41646 
  Speed: 3461 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 3461 2: 3117 
  3: 3235 4: 3134 5: 3113 6: 3102 7: 3143 8: 3102 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort mitigation: Clear CPU buffers; SMT vulnerable 
Graphics:
  Device-1: Intel HD Graphics 530 vendor: Dell XPS 15 9550 driver: i915 
  v: kernel bus ID: 00:02.0 chip ID: 8086:191b 
  Device-2: NVIDIA GM107M [GeForce GTX 960M] vendor: Dell XPS 15 9550 
  driver: nvidia v: 455.45.01 alternate: nouveau,nvidia_drm 
  bus ID: 01:00.0 chip ID: 10de:139b 
  Device-3: Sunplus Innovation Integrated_Webcam_HD type: USB 
  driver: uvcvideo bus ID: 1-12:4 chip ID: 1bcf:2b95 
  Display: x11 server: X.org 1.20.10 compositor: kwin_x11 
  driver: modesetting,nvidia alternate: fbdev,intel,nouveau,nv,vesa 
  resolution: <missing: xdpyinfo> 
  OpenGL: renderer: Mesa Intel HD Graphics 530 (SKL GT2) 
  v: 4.6 Mesa 20.3.1 direct render: Yes 
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio 
  vendor: Dell XPS 15 9550 driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
  chip ID: 8086:a170 
  Sound Server: ALSA v: k5.10.2-104-tkg-bmq 
Network:
  Device-1: Broadcom BCM43602 802.11ac Wireless LAN SoC vendor: Dell 
  driver: brcmfmac v: kernel port: e000 bus ID: 02:00.0 chip ID: 14e4:43ba 
  IF: wlp2s0 state: up mac: <filter> 
Drives:
  Local Storage: total: 476.94 GiB used: 11.13 GiB (2.3%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung 
  model: PM951 NVMe 512GB size: 476.94 GiB block size: physical: 512 B 
  logical: 512 B speed: 31.6 Gb/s lanes: 4 serial: <filter> rev: BXV77D0Q 
  temp: 38.9 C 
Partition:
  ID-1: / raw size: 476.64 GiB size: 476.64 GiB (100.00%) 
  used: 11.13 GiB (2.3%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2 
  ID-2: /boot/efi raw size: 300 MiB size: 299.4 MiB (99.80%) 
  used: 560 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 
  ID-3: /home raw size: 476.64 GiB size: 476.64 GiB (100.00%) 
  used: 11.13 GiB (2.3%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2 
  ID-4: /var/log raw size: 476.64 GiB size: 476.64 GiB (100.00%) 
  used: 11.13 GiB (2.3%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2 
  ID-5: /var/tmp raw size: 476.64 GiB size: 476.64 GiB (100.00%) 
  used: 11.13 GiB (2.3%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2 
Swap:
  Kernel: swappiness: 10 (default 60) cache pressure: 75 (default 100) 
  ID-1: swap-1 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram0 
  ID-2: swap-2 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram1 
  ID-3: swap-3 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram2 
  ID-4: swap-4 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram3 
  ID-5: swap-5 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram4 
  ID-6: swap-6 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram5 
  ID-7: swap-7 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram6 
  ID-8: swap-8 type: zram size: 1.94 GiB used: 0 KiB (0.0%) 
  priority: 32767 dev: /dev/zram7 
Sensors:
  System Temperatures: cpu: 65.0 C mobo: N/A 
  Fan Speeds (RPM): cpu: 2514 fan-2: 2466 
Info:
  Processes: 240 Uptime: 32m wakeups: 1 Memory: 15.48 GiB 
  used: 3.21 GiB (20.7%) Init: systemd v: 247 Compilers: gcc: 10.2.0 
  clang: 11.0.0 Packages: pacman: 1093 lib: 271 Shell: fish v: 3.1.2 
  running in: konsole inxi: 3.2.01

Thanks for any help

2

The standard way is creating a file, like this
https://wiki.archlinux.org/index.php/Kernel_module#Automatic_module_loading_with_systemd

4 Likes
3

If that method doesn't work, then the other thing you can do is blacklist the module, then write a systemd startup service to load the module after the network.target.

You could also test the broadcom-wl-dkms driver if you haven't already.

4

Thanks, I'd read that already and nothing was working for me but your post did send me down the rabbit hole to eventually discovering that brcmfmac was blacklisted in /lib/modprobe.d/broadcom-wl-dkms.conf

I commented it out and now wifi is working. Any idea why it would be blacklisted?

1 Like
5

Had you installed the wl driver at any point, sometimes when the wl driver is uninstalled it misses that file occasionally.

Don't know why that happens.

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6

actually broadcom-wl-dkms comes preinstalled

currently it is incompatible with 5.10 kernel

2 Likes
7

Fortunately I don't use a flakey broadcom adapter, so I wasn't 100% sure if it was installed by default, (but I kind of assumed it was from the name of the conf file).

I don't know why, but sometimes the blacklist in /lib/modprobe.d/ is not removed at uninstall.

2 Likes
8

Thanks everyone, I'll avoid broadcom in future :slight_smile:

2 Likes
9

Words of wisdom.

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10

Hello. Welcome to the Garuda Forum.

gary

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