https://bugzilla.kernel.org/show_bug.cgi?id=220419 Bug ID: 220419 Summary: Bluetooth stops working on Intel BE201 a few seconds after connecting a BT peripheral Product: Drivers Version: 2.5 Kernel Version: 6.15 Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: anton@xxxxxxxxx Regression: Yes Bisected 6ed83047389c63a8d7712b0bf19eb38a6e4dc68e commit-id: Since 6.15, Bluetooth stops working a few dozen seconds after connecting one or more BT peripherals on Intel BE201. "Stops working" means that all BT connections time out, Blueman and anything else that interacts with Bluetooth hangs, and a series of messages like this end up in dmesg: Aug 05 21:01:40 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:01:40 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:01:41 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:01:41 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:01:43 albedo kernel: Bluetooth: hci0: command tx timeout Aug 05 21:02:10 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:02:10 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:02:40 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:02:40 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:03:10 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:03:10 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:03:40 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:03:40 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:04:40 albedo kernel: Bluetooth: hci0: link tx timeout Aug 05 21:04:40 albedo kernel: Bluetooth: hci0: killing stalled connection dc:2c:26:3e:58:cf Aug 05 21:04:40 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:04:40 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:04:42 albedo kernel: Bluetooth: hci0: command tx timeout Aug 05 21:04:43 albedo kernel: Bluetooth: hci0: Failed to send frame (-62) Aug 05 21:04:43 albedo kernel: Bluetooth: hci0: sending frame failed (-62) Aug 05 21:04:45 albedo kernel: Bluetooth: hci0: command tx timeout Some other observations that might be helpful: - Problem still exists in 6.16 and 6.15.9. - WiFi is not affected. - Unloading and reloading btintel_pcie and btintel "fixes" the problem for another few dozen seconds. - Turning off power management for BE201 doesn't seem to affect the problem. - Actively streaming audio over Bluetooth seems to delay the problem. - Tested with all possible permutations of Sony WH-1000XM6 headphones, Logitech MX Master 3S mouse, and Keychron K7 keyboard. - Bisecting shows the problem was introduced by commit 6ed83047389c63a8d7712b0bf19eb38a6e4dc68e. - Hardware is a Dell XPS 13 9350 (2024, Lunar Lake) with Intel BE201 WiFi/BT. - Firmware version is 20250708. -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.
