https://bugzilla.kernel.org/show_bug.cgi?id=60824 --- Comment #83 from Andrés Rodríguez (hello@andres.codes) --- Before removing hci_rev check (patch 2.0 as-is) hcidump -X https://gist.github.com/mixedCase/67bfaa752050aa4a705e538f9d478ec3 dmesg: [14225.389482] usb 1-2: new full-speed USB device number 6 using xhci_hcd [14225.549112] usb 1-2: New USB device found, idVendor=0a12, idProduct=0001, bcdDevice=25.20 [14225.549115] usb 1-2: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [14225.549117] usb 1-2: Product: CSR8510 A10 [14225.557143] Bluetooth: hci0: CSR: New controller detected; bcdDevice=0x2520, HCI manufacturer=10, HCI rev=0x3120, LMP subver=0x22bb [14225.557144] Bluetooth: hci0: CSR: Unbranded CSR clone detected; adding workaround --- After removing hci_rev check hcidump -X https://gist.github.com/mixedCase/2e1c670e5d4ff414558b35db37472058 dmesg: [13938.833774] usb 1-2: new full-speed USB device number 4 using xhci_hcd [13938.996271] usb 1-2: New USB device found, idVendor=0a12, idProduct=0001, bcdDevice=25.20 [13938.996274] usb 1-2: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [13938.996276] usb 1-2: Product: CSR8510 A10 [13939.004322] Bluetooth: hci0: CSR: New controller detected; bcdDevice=0x2520, HCI manufacturer=10, HCI rev=0x3120, LMP subver=0x22bb [13939.004324] Bluetooth: hci0: CSR: Modern CSR controller type detected -- You are receiving this mail because: You are the assignee for the bug.