Solved: WiFi drops randomly, or after sleep/startup. Possibly BCM 43... - HP Support Community - 6620935
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18.04 - Broadcom BCM4352 Bluetooth lists MAC addresses and doesn't connect properly (WiFi fine) - Ask Ubuntu
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DELL-DW1820A-Drivers/Windows 10/dw1820a Bluetooth - Win10/bcbtums.inf at master · ameeno/DELL-DW1820A-Drivers · GitHub
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