** Description changed: On Kubuntu 24.04 (Noble), the Logitech G733 wireless USB dongle is disconnected by the kernel as soon as the headset is powered on when running kernel 6.17.0-14-generic (HWE stack). After the disconnect, the device cannot be recovered via software rescan; only physically unplugging and replugging the dongle restores functionality. This is a regression. The exact same hardware and system configuration work reliably with kernel 6.14.0-37-generic. With 6.14, turning the headset on or off does not cause any USB disconnects, and the device remains stable across reboots. On the affected kernel (6.17), powering on the headset immediately triggers a kernel log entry similar to: usb X-Y.Z: USB disconnect, device number N After that event: The USB device disappears completely. KDE/Plasma reports that the corresponding ALSA/PipeWire device no longer exists. A USB rescan does not restore the device. Only a physical unplug/replug resets the port and makes it work again. System context: Kubuntu 24.04 with linux-image-generic-hwe-24.04 power-profiles-daemon enabled and active /sys/module/usbcore/parameters/autosuspend = 2 (default) Ubuntu Pro enabled (esm-apps/esm-infra), livepatch not active for this kernel Given that the issue is strictly reproducible on 6.17 and does not occur on 6.14, this appears to be a regression in the USB/xHCI or runtime power management handling introduced between these kernel versions. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.14.0-37-generic 6.14.0-37.37~24.04.1 ProcVersionSignature: Ubuntu 6.14.0-37.37~24.04.1-generic 6.14.11 Uname: Linux 6.14.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.28.1-0ubuntu3.8 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Mon Feb 9 18:19:48 2026 InstallationDate: Installed on 2026-02-03 (6 days ago) InstallationMedia: Kubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1) - IwConfig: - lo no wireless extensions. - - enp5s0 no wireless extensions. - - wg0-mullvad no wireless extensions. - MachineType: Gigabyte Technology Co., Ltd. X570 AORUS ELITE - ProcFB: 0 nvidia-drmdrmfb - ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-37-generic root=UUID=f4529441-9dcc-4f6d-9773-151d699e8ab4 ro quiet splash vt.handoff=7 - PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. - RelatedPackageVersions: - linux-restricted-modules-6.14.0-37-generic N/A - linux-backports-modules-6.14.0-37-generic N/A - linux-firmware 20240318.git3b128b60-0ubuntu2.23 - RfKill: - - SourcePackage: linux-hwe-6.14 - UpgradeStatus: No upgrade log present (probably fresh install) - dmi.bios.date: 10/28/2025 - dmi.bios.release: 5.17 - dmi.bios.vendor: American Megatrends International, LLC. - dmi.bios.version: F40 - dmi.board.asset.tag: Default string - dmi.board.name: X570 AORUS ELITE - dmi.board.vendor: Gigabyte Technology Co., Ltd. - dmi.board.version: Default string - 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.:bvrF40:bd10/28/2025:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnX570AORUSELITE:pvr-CF:rvnGigabyteTechnologyCo.,Ltd.:rnX570AORUSELITE:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring: - dmi.product.family: X570 MB - dmi.product.name: X570 AORUS ELITE - dmi.product.sku: Default string - dmi.product.version: -CF - dmi.sys.vendor: Gigabyte Technology Co., Ltd.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2141339 Title: Regression: Logitech G733 USB dongle disconnects when headset is powered on (works on 6.14, broken on 6.17 HWE) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.14/+bug/2141339/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
