Looks like a hardware problem or kernel bug. You might be better off trying a different dongle.
** Package changed: bluez (Ubuntu) => linux (Ubuntu) ** Summary changed: - Seeing repeated error in dmesg / kernel log for USB BT dongle + Seeing repeated error in dmesg / kernel log for ASUS USB-BT500 dongle -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/2115588 Title: Seeing repeated error in dmesg / kernel log for ASUS USB-BT500 dongle Status in linux package in Ubuntu: New Bug description: I'm seeing a lot of repeated errors in my kernel dmesg every few seconds after a period of system being booted. Unplugging the USB dongle and plugging it back in again seems to shut it up for a bit. USB dongle is ASUS USB-BT500 0b05:190e Error repeating in log is along lines of: 2025-06-29T17:36:11.790979+10:00 AH03 kernel: Bluetooth: hci0: command 0xfc61 tx timeout 2025-06-29T17:36:11.791021+10:00 AH03 kernel: Bluetooth: hci0: RTL: Failed to generate devcoredump 2025-06-29T17:36:11.791024+10:00 AH03 kernel: Bluetooth: hci0: Resetting usb device. 2025-06-29T17:36:11.791026+10:00 AH03 kernel: Bluetooth: hci0: RTL: RTL: Read reg16 failed (-110) 2025-06-29T17:36:10.503156+10:00 AH03 rtkit-daemon[3005]: message repeated 5 times: [ Supervising 8 threads of 5 proce sses of 1 users.] 2025-06-29T17:36:11.795114+10:00 AH03 systemd[3564]: Stopped target bluetooth.target - Bluetooth. 2025-06-29T17:36:11.795495+10:00 AH03 systemd[1]: Stopped target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:11.902884+10:00 AH03 kernel: usb 2-5: reset full-speed USB device number 4 using xhci_hcd 2025-06-29T17:36:12.042563+10:00 AH03 systemd[3564]: Reached target bluetooth.target - Bluetooth. 2025-06-29T17:36:12.042954+10:00 AH03 systemd[1]: Reached target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:14.030890+10:00 AH03 kernel: Bluetooth: hci0: command 0xfc61 tx timeout 2025-06-29T17:36:14.030941+10:00 AH03 kernel: Bluetooth: hci0: RTL: Failed to generate devcoredump 2025-06-29T17:36:14.030945+10:00 AH03 kernel: Bluetooth: hci0: Resetting usb device. 2025-06-29T17:36:14.030949+10:00 AH03 kernel: Bluetooth: hci0: RTL: RTL: Read reg16 failed (-110) 2025-06-29T17:36:14.048321+10:00 AH03 systemd[3564]: Stopped target bluetooth.target - Bluetooth. 2025-06-29T17:36:14.048996+10:00 AH03 systemd[1]: Stopped target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:14.143892+10:00 AH03 kernel: usb 2-5: reset full-speed USB device number 4 using xhci_hcd 2025-06-29T17:36:14.287849+10:00 AH03 systemd[1]: Reached target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:14.289436+10:00 AH03 systemd[3564]: Reached target bluetooth.target - Bluetooth. 2025-06-29T17:36:16.269918+10:00 AH03 kernel: Bluetooth: hci0: command 0xfc61 tx timeout 2025-06-29T17:36:16.269966+10:00 AH03 kernel: Bluetooth: hci0: RTL: Failed to generate devcoredump 2025-06-29T17:36:16.269969+10:00 AH03 kernel: Bluetooth: hci0: Resetting usb device. 2025-06-29T17:36:16.269971+10:00 AH03 kernel: Bluetooth: hci0: RTL: RTL: Read reg16 failed (-110) 2025-06-29T17:36:16.269975+10:00 AH03 kernel: Bluetooth: hci0: urb 00000000558d8ec1 failed to resubmit (2) 2025-06-29T17:36:16.277882+10:00 AH03 systemd[3564]: Stopped target bluetooth.target - Bluetooth. 2025-06-29T17:36:16.278245+10:00 AH03 systemd[1]: Stopped target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:16.381881+10:00 AH03 kernel: usb 2-5: reset full-speed USB device number 4 using xhci_hcd 2025-06-29T17:36:16.526848+10:00 AH03 systemd[1]: Reached target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:16.527165+10:00 AH03 systemd[3564]: Reached target bluetooth.target - Bluetooth. 2025-06-29T17:36:18.509967+10:00 AH03 kernel: Bluetooth: hci0: command 0xfc61 tx timeout 2025-06-29T17:36:18.509995+10:00 AH03 kernel: Bluetooth: hci0: RTL: Failed to generate devcoredump 2025-06-29T17:36:18.509998+10:00 AH03 kernel: Bluetooth: hci0: Resetting usb device. 2025-06-29T17:36:18.509999+10:00 AH03 kernel: Bluetooth: hci0: RTL: RTL: Read reg16 failed (-110) 2025-06-29T17:36:18.523094+10:00 AH03 systemd[1]: Stopped target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:18.523350+10:00 AH03 systemd[3564]: Stopped target bluetooth.target - Bluetooth. 2025-06-29T17:36:18.622889+10:00 AH03 kernel: usb 2-5: reset full-speed USB device number 4 using xhci_hcd 2025-06-29T17:36:18.768905+10:00 AH03 systemd[3564]: Reached target bluetooth.target - Bluetooth. 2025-06-29T17:36:18.770504+10:00 AH03 systemd[1]: Reached target bluetooth.target - Bluetooth Support. 2025-06-29T17:36:20.750930+10:00 AH03 kernel: Bluetooth: hci0: command 0xfc61 tx timeout 2025-06-29T17:36:20.750980+10:00 AH03 kernel: Bluetooth: hci0: RTL: Failed to generate devcoredump 2025-06-29T17:36:20.750984+10:00 AH03 kernel: Bluetooth: hci0: Resetting usb device. 2025-06-29T17:36:20.750988+10:00 AH03 kernel: Bluetooth: hci0: RTL: RTL: Read reg16 failed (-110) 2025-06-29T17:36:20.750990+10:00 AH03 kernel: Bluetooth: hci0: urb 000000000f171e90 failed to resubmit (2) Not sure if bluez is right place for this bug, or it needs to go somewhere else.. Bluetooth does seem to be working, but the logs are awfully chatty. ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: bluez 5.79-2ubuntu1.1 ProcVersionSignature: Ubuntu 6.14.0-22.22-generic 6.14.5 Uname: Linux 6.14.0-22-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sun Jun 29 18:38:26 2025 InstallationDate: Installed on 2023-11-25 (582 days ago) InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64 (20231016.1) InterestingModules: rfcomm bnep btusb bluetooth MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-22-generic root=UUID=e7ed7850-c7b5-48e9-aa48-4995fc8fbfc4 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7 SourcePackage: bluez UpgradeStatus: Upgraded to plucky on 2025-05-23 (37 days ago) dmi.bios.date: 08/08/2018 dmi.bios.release: 4.6 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.61 dmi.board.name: Z97 Pro4 dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.61:bd08/08/2018:br4.6:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ97Pro4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. hciconfig: hci0: Type: Primary Bus: USB BD Address: 08:BF:B8:4A:A3:8E ACL MTU: 1021:6 SCO MTU: 255:12 UP RUNNING PSCAN RX bytes:1676 acl:0 sco:0 events:185 errors:0 TX bytes:33907 acl:0 sco:0 commands:185 errors:0 rfkill: 1621: hci0: Bluetooth Soft blocked: no Hard blocked: no To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2115588/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
