Upgraded from Zorin 17 to 18 and now can't use WIFI. When I go thru Software Updater to Additional drivers, the driver is there, "Using DKMS source for the Broadcom STA wireless.." but the only option I can choose is "Do not use this device". The Using box is already checked.
Also says "No proprietary drivers are in use"
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Try to go back to an older kernel. In grub menu select "Advanced options for Zorin" and then select kernel 6.14 to boot from and test if it works then.
If the grub menu isn't displayed at boot press continuosly esc key (or left shift key when you have a legacy BIOS) to show the grub menu.
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This sounds like a problem I had when upgrading from kernel 6.14 to 6.17 (under Zorin 18), described here with the solution if you want to remain on the latest kernel, or you can follow Forpli's recommendation if you don't mind using the previous kernel.
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