How to Solve No WiFi Adapter Found?
In this article I will share a tutorial on how to fix the No WiFi Adapter Found error on Broadcom Ubuntu. I got this error from an Acer laptop with Broadcom Hardware wifi, so in the wifi menu an error appears as shown in the picture:
Initially, my laptop worked fine, wifi was able to connect and browsing could run smoothly.
But suddenly the wifi doesn’t connect, I open the wifi menu and it appears “No Wi-Fi Adapter Found”. Hence, I fixed it and it worked. WiFi reconnected.
![No Wi-Fi Adapter Found Broadcom Ubuntu [Solved ]](https://i0.wp.com/www.chippiko.com/wp-content/uploads/2022/04/no_wifi_adapter_found.png?resize=1140%2C615&ssl=1 "No Wi-Fi Adapter Found Broadcom Ubuntu [Solved ]")
Check Adapter
How to Solve No Wi-Fi Adapter Found? The first step to fix it is to check the hardware used by the laptop via the terminal with the command:
sudo lshw -C networkIf it looks like the one below, it’s probably true that you are using broadcom as your laptop’s wifi hardware.
aceracer: $ sudo lshw -C network
[sudo] password for acer:
*-network
description: Ethernet interface product: NetLink
BCM57780 Gigabit Ethernet PCIe
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1so
version: 01
serial: 60:eb:69:d0:16:6f
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=5.1 1.0-27-generic firmware=sb latency=0 link=no multicast=yes port=twisted pair
resources: irg:28 memory:91400000-9140ffffDelete Driver
after confirming that the laptop uses drivers from broadcom, the next step is to delete/uninstall the drivers. Let’s remove the previously installed broadcom driver.
sudo apt remove broadcom-sta-dkms bcmwl-kernel-sourceThe delete process will run like this:
acerdacer: $ sudo apt remove broadcom-sta-dkms bcmwz-kernel-source
Reading package lists... Done
Building dependency tree Reading state information... Done
Package 'broadcom-sta-dkms' is not installed, so not removed The following packages will be REMOVED:
bcmwl-kernel-source
0 upgraded, 0 newly installed, 1 to remove and 247 not upgraded.
After this operation, 8.079 KB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 243065 files and directories currently installed.),
Removing bcmwl-kernel-source (6.30.223.271+bdcom-Oubuntu7-20.04.3) ...
Removing all DKMS Modules
Done.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.136Ubuntuó.6) ...
update-initramfs: Generating /boot/initrd.img-5.11.0-27-generic
W: Possible missing firmware /lib/firmware/i915/skl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/1915/glk_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/cml_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/icl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_49.0.1.bin for module i915
W: Possible missing firmware /lib/firmware/i915/dg1_dmc_ver2_02.bin for module i915
I: The initramfs will attempt to resume from /dev/sdal
I: (UUID=34597f0b-f4d2-419b-b30f-040433789910)
I: Set the RESUME variable to override this.Download File
After the driver is successfully uninstalled, Now you download two things b43-fwcutter and broadcom-wl-5. For b43-fwcutter there are two versions, 32-bit and 64-bit. Please download according to your laptop or computer:
Download b43-fwcutter_019-7_i386.deb (32-bit)
Download b43-fwcutter_019-7_amd64.deb (64-bit)
Download broadcom-wl-5.100.138.tar.bz2
Install File
After the download is complete, you can install the two files using the following command:
sudo dpkg -i b43-fwcutter_015-9_amd64.debNow b43-fwcutter has been installed. The next step is to extract the broadcom-wl file using the following command:
tar xfvj broadcom-wl-5.100.138.tar.bz2After the extract is complete, the next step is to install broadcom-wl using the following command:
sudo b43-fwcutter -w /lib/firmware broadcom-wl-5.100.138/linux/wl_apsta.oReboot
Then Reboot / Restart your laptop. Now you can use your laptop’s wifi.
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