Public bug reported: Ubuntu 21.10 (Impish) Bluetooth disconnects after few minutes, after kernel upgrade from 5.13.0-28-generic to 5.13.0-35-generic. After connecting, it disconnects again after few minutes.
To connect again these commands helps: hciconfig hci0 down rmmod btusb modprobe btusb hciconfig hci0 up Bluetooth in previous kernel was ok. This version of kernel have something like this in changelog: * Impish update: upstream stable patchset 2022-02-09 (LP: #1960452 https://bugs.launchpad.net/bugs/1960452) - workqueue: Fix unbind_workers() VS wq_worker_running() race - Bluetooth: btusb: fix memory leak in btusb_mtk_submit_wmt_recv_urb() - Bluetooth: btusb: Add two more Bluetooth parts for WCN6855 - Bluetooth: btusb: Add support for Foxconn QCA 0xe0d0 - Bluetooth: bfusb: fix division by zero in send path - Bluetooth: btusb: Add the new support ID for Realtek RTL8852A - Bluetooth: btusb: Add support for IMC Networks Mediatek Chip(MT7921) - Bluetooth: btusb: Add another Bluetooth part for Realtek 8852AE - Bluetooth: btusb: Enable MSFT extension for Mediatek Chip (MT7921) - Bluetooth: btusb: enable Mediatek to support AOSP extension - Bluetooth: btusb: Add one more Bluetooth part for the Realtek RTL8852AE - Bluetooth: btusb: Add the new support IDs for WCN6855 - Bluetooth: btusb: Add one more Bluetooth part for WCN6855 - Bluetooth: add quirk disabling LE Read Transmit Power - Bluetooth: btbcm: disable read tx power for some Macs with the T2 Security chip - Bluetooth: btbcm: disable read tx power for MacBook Air 8,1 and 8,2 So I assume the bug was introduced here. https://bugs.launchpad.net/ubuntu/+source/linux/5.13.0-32.35 Device connected with bluetooth was Thinkpad Bluetooth Keyboard KT-1255 (03X8714). ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: linux-image-5.13.0-35-generic 5.13.0-35.40 ProcVersionSignature: Ubuntu 5.13.0-35.40-generic 5.13.19 Uname: Linux 5.13.0-35-generic x86_64 ApportVersion: 2.20.11-0ubuntu71 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: as 3537 F.... pulseaudio /dev/snd/controlC0: as 3537 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Sat Mar 12 17:20:35 2022 InstallationDate: Installed on 2020-12-06 (461 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) MachineType: LENOVO 20T6000TPB ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-35-generic root=UUID=a5796f3d-37a8-428b-aa28-c160ea77bc9b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.13.0-35-generic N/A linux-backports-modules-5.13.0-35-generic N/A linux-firmware 1.201.5 SourcePackage: linux UpgradeStatus: Upgraded to impish on 2021-10-18 (144 days ago) dmi.bios.date: 09/06/2021 dmi.bios.release: 1.16 dmi.bios.vendor: LENOVO dmi.bios.version: R1AET40W (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20T6000TPB dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.16 dmi.modalias: dmi:bvnLENOVO:bvrR1AET40W(1.16):bd09/06/2021:br1.16:efr1.16:svnLENOVO:pn20T6000TPB:pvrThinkPadE14Gen2:rvnLENOVO:rn20T6000TPB:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20T6_BU_Think_FM_ThinkPadE14Gen2: dmi.product.family: ThinkPad E14 Gen 2 dmi.product.name: 20T6000TPB dmi.product.sku: LENOVO_MT_20T6_BU_Think_FM_ThinkPad E14 Gen 2 dmi.product.version: ThinkPad E14 Gen 2 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug impish -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1964672 Title: Bluetooth disconnects after few minutes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1964672/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
