The only wifi chips that are supported in linux-libre use the drivers ath9k or b43. And really ath9k is the better of the two. There is no support for any wifi standard newer than 802.11n.
Think Penguin is a reliable source for this hardware. On Sun, Oct 19, 2025, at 06:01, Daniel Hatton wrote: > I bought the USB Bluetooth and Wifi dongle advertised at > <https://www.amazon.com/dp/B0CGF9LVL9?ref_=pe_125775000_1044873430_t_fed_asin_title>, > > on the basis that having "Linux" in the name and "Libre" in the > description meant a better-than-average chance of it working with > Guix/Linux-Libre. The dongle appears in lsusb as > > Bus 001 Device 004: ID 0bda:c820 Realtek Semiconductor Corp. 802.11ac NIC > > The kernel definitely seems to be trying to do something with it; I've > appended below a diff between the output of lsmod just before and just > after plugging the dongle in. However, I'm still getting "No Wi-Fi > Adapter Found", and unable to switch on Bluetooth, in the Gnome settings > widget. > > What do folks think? Is there any hope of getting this dongle to work, > or should I give up and stop wasting my time? > > 1a2,7 > > rtw88_8821cu 12288 0 > > rtw88_8821c 90112 1 rtw88_8821cu > > rtw88_usb 28672 1 rtw88_8821cu > > rtw88_core 225280 2 rtw88_8821c,rtw88_usb > > mac80211 1503232 2 rtw88_core,rtw88_usb > > libarc4 12288 1 mac80211 > 89c95 > < cfg80211 1298432 1 iwlwifi > --- > > cfg80211 1298432 3 rtw88_core,iwlwifi,mac80211 > 92c98 > < bluetooth 995328 13 btrtl,btmtk,btintel,btbcm,bnep,btusb > --- > > bluetooth 995328 14 btrtl,btmtk,btintel,btbcm,bnep,btusb > > Attachments: > * OpenPGP_signature.asc
