On Thu, 16 Sep 2021 14:46:13 -0700 Tedd Ho-Jeong An wrote: > > looks like my Bluetooth stopped working after upgrade to linux-next > > as of yesterday (next-20210915). Is this a known problem? > > > > [ 19.594522] Bluetooth: hci0: Bootloader revision 0.1 build 42 week 52 2015 > > [ 19.595515] Bluetooth: hci0: Device revision is 2 > > [ 19.595517] Bluetooth: hci0: Secure boot is enabled > > [ 19.595517] Bluetooth: hci0: OTP lock is enabled > > [ 19.595518] Bluetooth: hci0: API lock is enabled > > [ 19.595519] Bluetooth: hci0: Debug lock is disabled > > [ 19.595520] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 > > [ 19.661829] Bluetooth: hci0: Found device firmware: intel/ibt-17-16-1.sfi > > [ 19.661924] Bluetooth: hci0: Boot Address: 0x40800 > > [ 19.661925] Bluetooth: hci0: Firmware Version: 6-12.21 > > [ 21.971023] Bluetooth: hci0: command 0xfc09 tx timeout > > [ 29.970995] Bluetooth: hci0: Failed to send firmware data (-110) > > [ 29.971108] Bluetooth: hci0: sending frame failed (-19) > > [ 29.971119] Bluetooth: hci0: Intel reset sent to retry FW download > > [ 30.123040] Bluetooth: hci0: sending frame failed (-19) > > [ 32.097392] Bluetooth: hci0: command 0xfc1e tx timeout > > [ 32.097408] Bluetooth: hci0: Failed to read MSFT supported features (-110) > > > > I think it's part of: > > > > 00:14.3 Network controller: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] (rev 30) > > I don't think it was known issue to me. > What was your previous kernel before switching to next-20210915? v5.14.3 > Also, do you still have a problem after cold reboot the system? (completely shutdown and wait some > seconds before start). Let me get back to you on that. Thanks! > From the log above, the command (0xfc09) is failing which the device may in the weird state.