[Bug 2167785] [NEW] ethernet connection breaks after wakeup

Public bug reported: Intel I226-V Ethernet fails after suspend/resume on Ubuntu 26.04. Hardware: Intel I226-V [8086:125c], rev 06 Driver: igc Kernel: 7.0.0-31-generic Steps: 1. Ethernet works normally. 2. Suspend system. 3. Resume. 4. eno2 becomes unavailable and Ethernet does not reconnect. 5. Reloading the igc module restores the interface: sudo modprobe -r igc sudo modprobe igc After reload, carrier returns, NetworkManager obtains DHCP address 192.168.1.10, and Ethernet works normally. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-31-generic 7.0.0-31.31 ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14 Uname: Linux 7.0.0-31-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sun Sep 20 09:57:59 2026 InstallationDate: Installed on 2026-09-18 (2 days ago) InstallationMedia: Ubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64 (20260826) IwDevWlo1Link: Not connected. MachineType: ASUS System Product Name ProcFB: 0 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-31-generic root=UUID=6f7598f7-82dc-4ea2-9204-aa3d9d9687ee ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/28/2023 dmi.bios.release: 4.4 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0404 dmi.board.asset.tag: Default string dmi.board.name: ROG STRIX Z790-F GAMING WIFI II 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.:bvr0404:bd09/28/2023:br4.4:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGSTRIXZ790-FGAMINGWIFIII: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 ** 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/2167785 Title: ethernet connection breaks after wakeup Status in linux package in Ubuntu: New Bug description: Intel I226-V Ethernet fails after suspend/resume on Ubuntu 26.04. Hardware: Intel I226-V [8086:125c], rev 06 Driver: igc Kernel: 7.0.0-31-generic Steps: 1. Ethernet works normally. 2. Suspend system. 3. Resume. 4. eno2 becomes unavailable and Ethernet does not reconnect. 5. Reloading the igc module restores the interface: sudo modprobe -r igc sudo modprobe igc After reload, carrier returns, NetworkManager obtains DHCP address 192.168.1.10, and Ethernet works normally. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-31-generic 7.0.0-31.31 ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14 Uname: Linux 7.0.0-31-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sun Sep 20 09:57:59 2026 InstallationDate: Installed on 2026-09-18 (2 days ago) InstallationMedia: Ubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64 (20260826) IwDevWlo1Link: Not connected. MachineType: ASUS System Product Name ProcFB: 0 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-31-generic root=UUID=6f7598f7-82dc-4ea2-9204-aa3d9d9687ee ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/28/2023 dmi.bios.release: 4.4 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0404 dmi.board.asset.tag: Default string dmi.board.name: ROG STRIX Z790-F GAMING WIFI II 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.:bvr0404:bd09/28/2023:br4.4:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGSTRIXZ790-FGAMINGWIFIII: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/2167785/+subscriptions