[Bug 2154154] [NEW] r8169 RTL8168h/8111h NETDEV WATCHDOG transmit queue timeout

Public bug reported: System experiences repeated network transmit queue timeouts using the r8169 driver with a Realtek RTL8168h/8111h NIC. Kernel messages: r8169 0000:04:00.0 enp4s0: NETDEV WATCHDOG: transmit queue 0 timed out r8169 0000:04:00.0 enp4s0: ASPM disabled on Tx timeout r8169 0000:04:00.0 enp4s0: rtl_rxtx_empty_cond == 0 Hardware: Realtek RTL8168h/8111h Driver: r8169 Observed behavior: - periodic network stalls/freezes - watchdog timeout repeats every few minutes - interface remains up but connectivity becomes unstable The issue appears related to ASPM/power management because the driver logs: "ASPM disabled on Tx timeout" Please investigate possible regressions or ASPM interactions in r8169. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-15-generic 7.0.0-15.15 ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: safia 4940 F.... wireplumber /dev/snd/controlC0: safia 4940 F.... wireplumber /dev/snd/seq: safia 4923 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon May 25 11:21:49 2026 InstallationDate: Installed on 2026-01-12 (133 days ago) InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007) MachineType: Gigabyte Technology Co., Ltd. B550M AORUS ELITE ProcFB: 0 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic root=UUID=414b02b6-610f-4cb2-83c5-dd44bea4485f ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to resolute on 2026-05-18 (6 days ago) dmi.bios.date: 10/28/2025 dmi.bios.release: 5.17 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: F21 dmi.board.asset.tag: Default string dmi.board.name: B550M 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.:bvrF21:bd10/28/2025:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnB550MAORUSELITE:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB550MAORUSELITE:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:pfaB550MB: dmi.product.family: B550 MB dmi.product.name: B550M AORUS ELITE dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: Gigabyte Technology Co., Ltd. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2154154 Title: r8169 RTL8168h/8111h NETDEV WATCHDOG transmit queue timeout Status in linux package in Ubuntu: New Bug description: System experiences repeated network transmit queue timeouts using the r8169 driver with a Realtek RTL8168h/8111h NIC. Kernel messages: r8169 0000:04:00.0 enp4s0: NETDEV WATCHDOG: transmit queue 0 timed out r8169 0000:04:00.0 enp4s0: ASPM disabled on Tx timeout r8169 0000:04:00.0 enp4s0: rtl_rxtx_empty_cond == 0 Hardware: Realtek RTL8168h/8111h Driver: r8169 Observed behavior: - periodic network stalls/freezes - watchdog timeout repeats every few minutes - interface remains up but connectivity becomes unstable The issue appears related to ASPM/power management because the driver logs: "ASPM disabled on Tx timeout" Please investigate possible regressions or ASPM interactions in r8169. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-15-generic 7.0.0-15.15 ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: safia 4940 F.... wireplumber /dev/snd/controlC0: safia 4940 F.... wireplumber /dev/snd/seq: safia 4923 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon May 25 11:21:49 2026 InstallationDate: Installed on 2026-01-12 (133 days ago) InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007) MachineType: Gigabyte Technology Co., Ltd. B550M AORUS ELITE ProcFB: 0 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic root=UUID=414b02b6-610f-4cb2-83c5-dd44bea4485f ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to resolute on 2026-05-18 (6 days ago) dmi.bios.date: 10/28/2025 dmi.bios.release: 5.17 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: F21 dmi.board.asset.tag: Default string dmi.board.name: B550M 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.:bvrF21:bd10/28/2025:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnB550MAORUSELITE:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB550MAORUSELITE:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:pfaB550MB: dmi.product.family: B550 MB dmi.product.name: B550M AORUS ELITE dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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