Unable to see Wi-Fi networks after installing Ubuntu 16.04 LTS

by Keyur Potdar   Last Updated July 25, 2018 10:02 AM

I recently installed Ubuntu 16.04 LTS alongside Windows 10. From Windows, the Wi-Fi is working; but on Ubuntu, I can't see any Wi-Fi networks.

So, I followed this answer to this question which was similar to mine, but, this is the output that I got:

$ sudo dpkg -i *.deb
(Reading database ... 219147 files and directories currently installed.)
Preparing to unpack bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu1~1.2_amd64.deb ...
Removing all DKMS Modules
Done.
Unpacking bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu1~1.2) over (6.30.223.271+bdcom-0ubuntu1~1.2) ...
Preparing to unpack dkms_2.2.0.3-2ubuntu11.5_all.deb ...
Unpacking dkms (2.2.0.3-2ubuntu11.5) over (2.2.0.3-2ubuntu11.5) ...
Setting up dkms (2.2.0.3-2ubuntu11.5) ...
Setting up bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu1~1.2) ...
Loading new bcmwl-6.30.223.271+bdcom DKMS files...
Building only for 4.15.0-29-generic
Building for architecture x86_64
Building initial module for 4.15.0-29-generic
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/bcmwl-kernel-source.0.crash'
Error! Bad return status for module build on kernel: 4.15.0-29-generic (x86_64)
Consult /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/make.log for more information.
modprobe: FATAL: Module wl not found in directory /lib/modules/4.15.0-29-generic
update-initramfs: deferring update (trigger activated)
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for initramfs-tools (0.122ubuntu8.11) ...
update-initramfs: Generating /boot/initrd.img-4.15.0-29-generic

And I still can't see any Wi-Fi networks.

Output for lspci -knn | grep Net -A2:

$ lspci -knn | grep Net -A2
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
    Subsystem: Lenovo Device [17aa:c024]

Details about my wireless card: https://paste.ubuntu.com/p/ysddMbmxwz/



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