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Works fine with the latest Ubuntu. I found this on another search:

The Broadcom wifi chipset requires a proprietary driver to work.

Run these commands to install and enable it.

sudo apt-get install bcmwl-kernel-source
sudo modprobe -r ideapad_laptop

But no joy- no wifi.

lsusb says broadcom BCM2045B (BCD-2.1)

Where can I find driver?

  • And what is the question? Because this is rather an answer. – Sysadmin Jun 21 at 6:41
  • While you can answer your own question, they should be separated. – Paul Jun 23 at 22:15

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