Comment 38 for bug 1853665

Revision history for this message
justcomplaining (justcomplaining) wrote : Re: Bluetooth not working with Realtek RTL8821CE

Cold booting did nothing, the device is not showing up.

hcitool scan
Device is not available: No such device

hcitool -i dev
Invalid device: No such device
steven@swiffundweg:~$ rfkill list
0: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no

hciconfig -a

sudo hciconfig hci0 up
Can't get device info: No such device

lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 10000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
    |__ Port 5: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 5: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M

dmesg | grep Bluetooth
[ 5461.107139] Bluetooth: Core ver 2.22
[ 5461.107184] Bluetooth: HCI device and connection manager initialized
[ 5461.107191] Bluetooth: HCI socket layer initialized
[ 5461.107194] Bluetooth: L2CAP socket layer initialized
[ 5461.107199] Bluetooth: SCO socket layer initialized

dmesg |grep -i firm
[ 0.148580] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 2.538572] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
s

dmesg | grep 8821
[ 2.481014] rtl8821ce: loading out-of-tree module taints kernel.
[ 2.520129] rtl8821ce: module verification failed: signature and/or required key missing - tainting kernel
[ 2.916376] rtl8821ce 0000:02:00.0 wlo1: renamed from wlan0

bluetoothctl
Waiting to connect to bluetoothd...