Probably the same problem for me on a Lenovo X1 Carbon (with BCM20702A). There were no problems under Debian 11, since the update to Debian 12 Bluetooth no longer works.
Output from dmesg | grep -i bluet [ 6.593789] Bluetooth: HCI socket layer initialized [ 6.593792] Bluetooth: L2CAP socket layer initialized [ 6.593798] Bluetooth: SCO socket layer initialized [ 6.832360] Bluetooth: hci0: BCM: chip id 63 [ 6.833334] Bluetooth: hci0: BCM: features 0x07 [ 6.849357] Bluetooth: hci0: BCM20702A [ 6.849363] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000 [ 6.851650] bluetooth hci0: firmware: direct-loading firmware brcm/BCM20702A1-0a5c-21e6.hcd [ 6.851657] Bluetooth: hci0: BCM20702A1 'brcm/BCM20702A1-0a5c-21e6.hcd' Patch [ 7.267728] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 7.267734] Bluetooth: BNEP filters: protocol multicast [ 7.267740] Bluetooth: BNEP socket layer initialized [ 8.914113] Bluetooth: hci0: command 0x0a0a tx timeout [ 8.914134] Bluetooth: hci0: BCM: Patch command 0a0a failed (-110) [ 8.914140] Bluetooth: hci0: BCM: Patch failed (-110) [ 11.026218] Bluetooth: hci0: command 0x1001 tx timeout [ 11.026300] Bluetooth: hci0: BCM: Reading local version info failed (-110) root@X1Carbon:/# hciconfig hci0 up Can't init device hci0: Connection timed out (110) ------------------------------------------------------------------------ On Mon, 12 Jun 2023 22:39:31 -0700 Zach Berger <[email protected]> wrote: > Package: bluetooth > Severity: important > Tags: upstream > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > *** Reporter, please consider answering these questions, where appropriate *** > > * What led up to the situation? > > Bluetooth has stopped working on my system. I have a ZEXMTE USB > bluetooth adapter. It worked earlier in the bookworm release cycle > but at somepoint it stopped working. > > In the kernel logs I see: > > [ +1.306483] Bluetooth: hci0: command 0x2005 tx timeout > [ +0.003845] Bluetooth: hci0: Opcode 0x2005 failed: -110 > [ +2.012181] Bluetooth: hci0: Opcode 0x2041 failed: -110 > [ +0.000014] Bluetooth: hci0: command 0x2041 tx timeout > > In the kernel bug tracker this has been reported as well: > https://bugzilla.kernel.org/show_bug.cgi?id=215167 > > -- System Information: > Debian Release: trixie/sid > APT prefers unstable > APT policy: (500, 'unstable') > Architecture: amd64 (x86_64) > > Kernel: Linux 6.1.0-9-amd64 (SMP w/16 CPU threads; PREEMPT) > Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set > Shell: /bin/sh linked to /usr/bin/dash > Init: systemd (via /run/systemd/system) > LSM: AppArmor: enabled > > Versions of packages bluetooth depends on: > ii bluez 5.66-1 > > bluetooth recommends no packages. > > Versions of packages bluetooth suggests: > pn bluez-cups <none> > pn bluez-meshd <none> > pn bluez-obexd <none> > > -- Grüße /Wolf-Dieter/

