https://bugzilla.kernel.org/show_bug.cgi?id=220344 Bug ID: 220344 Summary: Intel AX211 bluetooth randomly disconnects and reconnects, started after kernel update Product: Drivers Version: 2.5 Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: tal.lich@xxxxxxxxx Regression: No Bluetooth devices disconnect every few minutes. Tried same devices with another laptop with same hardware but Windows OS - works fine. So this is not the devices or the Bluetooth hardware. Every time the disconnect happens, dmesg shows: Jul 16 13:47:24 licht-t14s kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Jul 16 13:47:24 licht-t14s kernel: Bluetooth: hci0: Hardware error 0x0c I have tried: - Downloading the newest firmware file from linux-firmware (file ibt-0040-0041.{sfi/ddc} - Setting the following options in /etc/modprobe.d # Disable power saving in both iwlmvm and iwlwifi options iwlmvm power_scheme=1 options iwlwifi power_save=0 # Disable bluetooth coexistence to avoid BT issues options iwlwifi bt_coex_active=0 I have read on Ubuntu's forum (here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2051720) that this may be a regression in kernel 6.5 but I'm on a newer kernel Hardware info: System : Lenovo Thinkpad T14s Gen4 model 21F60051IV BIOS : N3PET23W (1.14) Adapter : Intel AX211 Firmware: 133-20.25 OS info: Kernel : Linux licht-t14s 6.8.0-60-generic #63~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 19:00:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux Distro : Ubuntu 22.04.05 -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.
