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Dell inspiron 15 3537: problems with Catalina


ovacai

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Looks like you have an Atheros wifi AR9565 which has been dropped since Mojave, see here

You can try restoring to an older kext but AR9565 has limited support, you are better off with an Intel Wi-fi combo.

For touchpad, try disabling SMCDellSensors.kext, seems to be known to break trackpad.

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