Public bug reported: Hi,
The bluetooth with device rtl8822cu does not work with 5.9.12 mainline kernel (and all 5.9 kernel). Before it worked fine with 5.8.0 mainline kernel. A similar problem was solved for rl8822ce in 5.9.11 kernel by arch. Discussion here : https://bbs.archlinux.org/viewtopic.php?pid=1940003#p1940003 meloli@Asus-A17:~$ sudo dmesg | grep -i bluetooth [ 1.476073] usb 5-1: Product: Bluetooth Radio [ 3.977975] Bluetooth: Core ver 2.22 [ 3.978022] Bluetooth: HCI device and connection manager initialized [ 3.978030] Bluetooth: HCI socket layer initialized [ 3.978035] Bluetooth: L2CAP socket layer initialized [ 3.978043] Bluetooth: SCO socket layer initialized [ 4.002039] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000c lmp_ver=0a lmp_subver=8822 [ 4.003996] Bluetooth: hci0: RTL: rom_version status=0 version=3 [ 4.004001] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cu_fw.bin [ 4.006885] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cu_config.bin [ 4.007705] Bluetooth: hci0: RTL: cfg_sz 6, total sz 31422 [ 4.283989] Bluetooth: hci0: RTL: fw version 0x09993aa1 [ 4.933204] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 4.933207] Bluetooth: BNEP filters: protocol multicast [ 4.933214] Bluetooth: BNEP socket layer initialized [ 1422.650815] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000c lmp_ver=0a lmp_subver=8822 [ 1422.652695] Bluetooth: hci0: RTL: rom_version status=0 version=3 [ 1422.652725] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cu_fw.bin [ 1422.652877] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cu_config.bin [ 1422.653058] Bluetooth: hci0: RTL: cfg_sz 6, total sz 31422 [ 1422.931399] Bluetooth: hci0: RTL: fw version 0x09993aa1 [ 1632.862056] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=0999 lmp_ver=0a lmp_subver=3aa1 [ 1632.862064] Bluetooth: hci0: RTL: unknown IC info, lmp subver 3aa1, hci rev 0999, hci ver 000a [ 1632.862065] Bluetooth: hci0: RTL: assuming no firmware upload needed meloli@Asus-A17:~$ lsmod|grep blue bluetooth 647168 12 btrtl,btintel,btbcm,bnep,btusb ecdh_generic 16384 1 bluetooth meloli@Asus-A17:~$ lsusb Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 002: ID 13d3:3548 IMC Networks Bluetooth Radio Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 002: ID 0951:1666 Kingston Technology DataTraveler 100 G3/G4/SE9 G2 Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 003: ID 13d3:56a2 IMC Networks USB2.0 HD UVC WebCam Bus 003 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub meloli@Asus-A17:~$ rfkill list all 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 3: hci0: Bluetooth Soft blocked: no Hard blocked: no ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: bluetooth realtek rtl8822cu ** Attachment added: "bug.zip" https://bugs.launchpad.net/bugs/1906515/+attachment/5440324/+files/bug.zip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906515 Title: Bluetooth : No device found (rtl8822cu) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906515/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
