I can confirm it's broken on AX211 as well. I'm using a Bluetooth keyboard+headphones together with WiFi. Bluetooth on both devices works fine for a while, but disconnects every few minutes (this is manifested by the keyboard getting "stuck" or the sound stream becoming garbled)
Attaching some system information+logs below. They key point to note is that every time this happens, these two lines are logged: Apr 03 11:36:40 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 11:36:41 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Sometimes the error code is different: Apr 03 12:32:37 kernel: Bluetooth: hci0: Hardware error 0x0a Apr 03 12:32:37 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Using suggestions from another thread I've tried disabling power management on the adapter by adding these lines to /etc/modprobe.d/iwlwifi.conf and rebooting: options iwlmvm power_scheme=1 options iwlwifi power_save=0 But that did not solve the issue. --------------- $ uname -a Linux 6.8.0-52-generic #53~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Jan 15 19:18:46 UTC 2 x86_64 x86_64 x86_64 GNU/Linux $ lsusb | grep 8087 Bus 003 Device 006: ID 8087:0033 Intel Corp. # This is Intel AX211 $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 22.04.5 LTS Release: 22.04 Codename: jammy $ dmidecode -t0,1 # dmidecode 3.3 Getting SMBIOS data from sysfs. SMBIOS 3.4.0 present. Handle 0x001B, DMI type 0, 26 bytes BIOS Information Vendor: LENOVO Version: N3PET23W (1.14 ) Release Date: 01/30/2024 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 32 MB Characteristics: PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported 3.5"/720 kB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported BIOS boot specification is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 1.14 Firmware Revision: 1.9 Handle 0x001C, DMI type 1, 27 bytes System Information Manufacturer: LENOVO Product Name: 21F60051IV Version: ThinkPad T14s Gen 4 Serial Number: PF4A7DV2 UUID: b51cc5d9-e4ad-11ed-80f4-e88088c7d54b Wake-up Type: Power Switch SKU Number: LENOVO_MT_21F6_BU_Think_FM_ThinkPad T14s Gen 4 Family: ThinkPad T14s Gen 4 $ journalctl Apr 03 08:52:24 bluetoothd[1042]: Controller resume with wake event 0x0 Apr 03 08:53:10 bluetoothd[1042]: /org/bluez/hci0/dev_38_18_4C_BE_34_1D/sep1/fd37: fd(44) ready Apr 03 09:56:39 bluetoothd[1042]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107) Apr 03 10:03:46 bluetoothd[1042]: Controller resume with wake event 0x0 Apr 03 10:03:46 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00D9/input/input576 Apr 03 10:03:46 systemd-logind[1085]: Watching system buttons on /dev/input/event18 (Microsoft Bluetooth Keyboard) Apr 03 10:03:46 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00D9/input/input577 Apr 03 10:03:46 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00D9/input/input578 Apr 03 10:03:46 kernel: hid-generic 0005:045E:0830.00D9: input,hidraw3: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 10:04:10 kernel: logitech-hidpp-device 0005:046D:B015.00DA: input,hidraw4: BLUETOOTH HID v0.13 Keyboard [Logitech M720 Triathlon Multi-Device Mouse] on 10:f6:0a:05:ba:0d Apr 03 11:13:51 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00DB/input/input581 Apr 03 11:13:51 systemd-logind[1085]: Watching system buttons on /dev/input/event18 (Microsoft Bluetooth Keyboard) Apr 03 11:13:51 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00DB/input/input582 Apr 03 11:13:51 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00DB/input/input583 Apr 03 11:13:51 kernel: hid-generic 0005:045E:0830.00DB: input,hidraw3: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 11:30:06 bluetoothd[1042]: /org/bluez/hci0/dev_38_18_4C_BE_34_1D/sep1/fd38: fd(46) ready Apr 03 11:36:40 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 11:36:41 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 11:36:41 bluetoothd[1042]: No matching connection for device Apr 03 11:36:41 bluetoothd[1042]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107) Apr 03 11:36:42 kernel: logitech-hidpp-device 0005:046D:B015.00DC: input,hidraw3: BLUETOOTH HID v0.13 Keyboard [Logitech M720 Triathlon Multi-Device Mouse] on 10:f6:0a:05:ba:0d Apr 03 11:37:02 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00DD/input/input588 Apr 03 11:37:02 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00DD/input/input589 Apr 03 11:37:02 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00DD/input/input590 Apr 03 11:37:02 kernel: hid-generic 0005:045E:0830.00DD: input,hidraw4: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 11:37:02 systemd-logind[1085]: Watching system buttons on /dev/input/event20 (Microsoft Bluetooth Keyboard) Apr 03 11:37:04 bluetoothd[1042]: /org/bluez/hci0/dev_38_18_4C_BE_34_1D/fd39: fd(44) ready Apr 03 11:43:09 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 11:43:09 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 11:43:29 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 11:43:29 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 11:46:02 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 11:46:02 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 12:05:49 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 12:05:49 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 12:11:41 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 12:11:41 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 12:23:19 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00DE/input/input592 Apr 03 12:23:19 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00DE/input/input593 Apr 03 12:23:19 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00DE/input/input594 Apr 03 12:23:19 kernel: hid-generic 0005:045E:0830.00DE: input,hidraw3: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 12:23:19 systemd-logind[1085]: Watching system buttons on /dev/input/event18 (Microsoft Bluetooth Keyboard) Apr 03 12:23:21 kernel: logitech-hidpp-device 0005:046D:B015.00DF: input,hidraw4: BLUETOOTH HID v0.13 Keyboard [Logitech M720 Triathlon Multi-Device Mouse] on 10:f6:0a:05:ba:0d Apr 03 12:32:37 kernel: Bluetooth: hci0: Hardware error 0x0a Apr 03 12:32:37 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 12:39:05 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00E0/input/input597 Apr 03 12:39:05 systemd-logind[1085]: Watching system buttons on /dev/input/event18 (Microsoft Bluetooth Keyboard) Apr 03 12:39:05 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00E0/input/input598 Apr 03 12:39:05 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00E0/input/input599 Apr 03 12:39:05 kernel: hid-generic 0005:045E:0830.00E0: input,hidraw3: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 12:40:10 kernel: logitech-hidpp-device 0005:046D:B015.00E1: input,hidraw4: BLUETOOTH HID v0.13 Keyboard [Logitech M720 Triathlon Multi-Device Mouse] on 10:f6:0a:05:ba:0d Apr 03 12:54:55 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 12:54:55 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 13:23:27 kernel: Bluetooth: hci0: Hardware error 0x0c Apr 03 13:23:27 kernel: Bluetooth: hci0: Retrieving Intel exception info failed (-16) Apr 03 13:42:11 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00E2/input/input602 Apr 03 13:42:11 systemd-logind[1085]: Watching system buttons on /dev/input/event18 (Microsoft Bluetooth Keyboard) Apr 03 13:42:11 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00E2/input/input603 Apr 03 13:42:11 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00E2/input/input604 Apr 03 13:42:11 kernel: hid-generic 0005:045E:0830.00E2: input,hidraw3: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 13:42:15 kernel: logitech-hidpp-device 0005:046D:B015.00E3: input,hidraw4: BLUETOOTH HID v0.13 Keyboard [Logitech M720 Triathlon Multi-Device Mouse] on 10:f6:0a:05:ba:0d Apr 03 15:02:00 bluetoothd[1042]: /org/bluez/hci0/dev_38_18_4C_BE_34_1D/sep1/fd40: fd(46) ready Apr 03 15:20:54 bluetoothd[1042]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107) Apr 03 15:48:39 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00E4/input/input608 Apr 03 15:48:39 kernel: input: Microsoft Bluetooth Keyboard Mouse as /devices/virtual/misc/uhid/0005:045E:0830.00E4/input/input609 Apr 03 15:48:39 kernel: input: Microsoft Bluetooth Keyboard as /devices/virtual/misc/uhid/0005:045E:0830.00E4/input/input610 Apr 03 15:48:39 kernel: hid-generic 0005:045E:0830.00E4: input,hidraw3: BLUETOOTH HID v1.17 Keyboard [Microsoft Bluetooth Keyboard] on 10:f6:0a:05:ba:0d Apr 03 15:48:39 systemd-logind[1085]: Watching system buttons on /dev/input/event18 (Microsoft Bluetooth Keyboard) Apr 03 15:52:29 bluetoothd[1042]: /org/bluez/hci0/dev_38_18_4C_BE_34_1D/sep1/fd41: fd(46) ready Apr 03 16:32:34 kernel: logitech-hidpp-device 0005:046D:B015.00E5: input,hidraw4: BLUETOOTH HID v0.13 Keyboard [Logitech M720 Triathlon Multi-Device Mouse] on 10:f6:0a:05:ba:0d -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2051720 Title: Bluetooth Broken In Kernel Versions 6.5+ (Intel AX210) Status in Linux: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: ``` kernel: Bluetooth: hci0: command 0xfc05 tx timeout ``` This issue started with kernel 6.5. Bluetooth has been broken ever since. The issue was not present in earlier versions of the kernel. ``` $ uname -a Linux 6.5.0-17-generic #17~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Jan 16 14:32:32 UTC 2 x86_64 x86_64 x86_64 GNU/Linux ``` ``` $ lsusb | grep -i bluetooth Bus 001 Device 004: ID 8087:0032 Intel Corp. AX210 Bluetooth ``` ``` $ journalctl -b | egrep -i bluetooth Jan 30 10:28:53 systemd[3247]: Reached target Bluetooth. Jan 30 10:28:53 systemd[1]: Reached target Bluetooth Support. Jan 30 10:28:55 kernel: Bluetooth: hci0: command 0xfc05 tx timeout Jan 30 10:28:55 kernel: Bluetooth: hci0: Reading Intel version command failed (-110) ``` ``` linux-firmware/jammy-proposed,now 20220329.git681281e4-0ubuntu3.25 all [installed,automatic] ``` --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: dustin 2472 F.... pulseaudio /dev/snd/controlC2: dustin 2472 F.... pulseaudio /dev/snd/controlC0: dustin 2472 F.... pulseaudio /dev/snd/controlC1: dustin 2472 F.... pulseaudio CRDA: N/A CasperMD5CheckResult: unknown CurrentDesktop: KDE DistroRelease: KDE neon 22.04 MachineType: Gigabyte Technology Co., Ltd. B650M AORUS ELITE AX NonfreeKernelModules: zfs Package: linux (not installed) ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: root=zfs:zpool/ubuntu/SYSTEM quiet splash spl.spl_hostid=0x00bab10c ProcVersionSignature: Ubuntu 6.5.0-21.21~22.04.1-generic 6.5.8 RelatedPackageVersions: linux-restricted-modules-6.5.0-21-generic N/A linux-backports-modules-6.5.0-21-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.29 Tags: jammy Uname: Linux 6.5.0-21-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: docker sudo vboxusers WifiSyslog: _MarkForUpload: True dmi.bios.date: 01/10/2024 dmi.bios.release: 5.31 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: F21 dmi.board.asset.tag: Default string dmi.board.name: B650M AORUS ELITE AX dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrF21:bd01/10/2024:br5.31:svnGigabyteTechnologyCo.,Ltd.:pnB650MAORUSELITEAX:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB650MAORUSELITEAX:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring: dmi.product.family: B650 MB dmi.product.name: B650M AORUS ELITE AX dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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