@maxroby, from the line in dkms.5.11.0-11-generic: rtl8821ce, v5.5.2_34066.20200325, 5.11.0-11-generic, x86_64: installed
It means you're still running your 5.11 kernel with rtl8821ce-dkms compiled and installed. The same thing can also be found in the dmesg log. Is there anything wrong with the purge? rtl8821ce has already in-tree kernel support, and it's named rtw88_foooo, e.g. rtw88_8821ce. So you need to uninstall that DKMS to try that in mainline kernel. I think your card, PCIID [10ec:c821] subsystem [17aa:c024], should have been supported. ** Summary changed: - RTL8821CE 802.11ac PCIe [10ec:c821] Bluetooth not working + RTL8821CE 802.11ac PCIe [10ec:c821] subsystem [17aa:c024] Bluetooth not working -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921829 Title: RTL8821CE 802.11ac PCIe [10ec:c821] subsystem [17aa:c024] Bluetooth not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1921829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs