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Author of that guide refers to wireless-bcm43142-dkms_6.20.55.19-1_b package of the first step if the download link is down, you can also download the file from here: !qIUySZYJ!PgfNRVCcXO-enbDuhziUqVCriMcDhbU-houaQ97c0yM. If so, installation of wl driver is not enough. To check that, see if there's such string in output of lspci command: 02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
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Note: sometimes Lenovo B590 comes with BCM43142 network adapter.
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But it is absolutely not necessery to install the driver. = Configuration Required = Only works with a non-free driver and or firmwareĭuring installation, a non free driver is asked for. = OK Unsupported(No Driver) = Error (Couldn't get it working) Unknown, Not Test Not-applicable
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