[Bug 2161448] Re: mt7921u: USB Wi-Fi enters unrecoverable state after prolonged uptime; NetworkManager/supplicant stalls followed by USB disconnect deadlock

Actually for this kind of tests it's typically even better to have all out-of-tree drivers disabled, so as long as you can boot with any graphics, it should be fine and actually a preferred option. -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161448 Title: mt7921u: USB Wi-Fi enters unrecoverable state after prolonged uptime; NetworkManager/supplicant stalls followed by USB disconnect deadlock Status in linux package in Ubuntu: Confirmed Bug description: Netgear A8000 (MediaTek mt7921u/mt7922 USB) intermittently loses connectivity after many hours or overnight. The interface remains associated with the AP and retains a DHCP address, but no traffic passes. Symptoms: nmcli shows connected or attempts reconnection. Ping to the default gateway returns "Destination Host Unreachable". Kernel repeatedly logs: unregister_netdevice: waiting for wlx... to become free. Usage count = 2 Previous debugging showed tee blocked inside mt792xu_disconnect() during usb_unbind_interface(). Restarting sudo systemctl restart wpa_supplicant NetworkManager immediately restores connectivity without unplugging the adapter or rebooting. Additional observations USB runtime power management disabled (power/control=on) rfkill not blocked interface still exists during failure Wi-Fi PHY still present NetworkManager restart does not recover the severe failure USB unbind hangs Driver unload therefore cannot complete NOTE: I also have a 394 MB apport report. Would it be useful, or are the attached failure-time logs sufficient? --- ProblemType: Bug ApportVersion: 2.28.2-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ysuhail 2853 F.... wireplumber /dev/snd/controlC0: ysuhail 2853 F.... wireplumber /dev/snd/seq: ysuhail 2851 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 24.04 InstallationDate: Installed on 2026-06-25 (28 days ago) InstallationMedia: Ubuntu-Server 24.04.4 LTS "Noble Numbat" - Release amd64 (20260210) MachineType: ASUS System Product Name Package: linux (not installed) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-28-generic root=UUID=8bb051d9-0961-4018-b123-40eba5aa4bdb ro nomodeset pcie_aspm=off loglevel=3 ProcVersionSignature: Ubuntu 7.0.0-28.28~24.04.1-generic 7.0.12 RelatedPackageVersions: linux-restricted-modules-7.0.0-28-generic N/A linux-backports-modules-7.0.0-28-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.27 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: noble Uname: Linux 7.0.0-28-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sudo users _MarkForUpload: True dmi.bios.date: 07/18/2025 dmi.bios.release: 12.3 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1203 dmi.board.asset.tag: Default string dmi.board.name: Pro WS WRX90E-SAGE SE dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1203:bd07/18/2025:br12.3:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnProWSWRX90E-SAGESE:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:pfaTobefilledbyO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: ASUS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161448/+subscriptions