[Bug 2167202] [NEW] thunderbolt/pci JHL7440/AQC113 fails to recover after tunnel disconnect; BAR allocation fails

Public bug reported: A bus-powered JHL7440 Thunderbolt enclosure containing an AQC113 spontaneously disconnects on both USB4 ports. The Thunderbolt device reconnects, but its PCI hierarchy is not restored reliably. In one captured recovery the AQC113 appeared after bridge-window allocation, received no BAR resources, and failed probe with error -5. Removing the complete JHL7440 PCI subtree and rescanning the empty parent bus resized the bridge windows and restored 10GbE without rebooting. GEEKOM A7 Max, BIOS 1.26 Ubuntu and 7.0.0-31-generic Wavlink WL-NWU342G, JHL7440, NVM 69.84 AQC113 firmware 1.5.48 Both USB4 ports affected 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 AlsaVersion: Advanced Linux Sound Architecture Driver Version k7.0.0-31-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' CasperMD5CheckResult: pass CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sun Sep 13 16:17:22 2026 InstallationDate: Installed on 2026-08-15 (29 days ago) InstallationMedia: Ubuntu-Server 26.04 "Resolute Raccoon" - Release amd64 (20260420.1) MachineType: GEEKOM A7 Max ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-31-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash pcie_aspm.policy=performance iommu=pt pci=nocrs pcie_port_pm=off crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) acpidump: dmi.bios.date: 09/15/2025 dmi.bios.release: 1.26 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: 1.26 dmi.board.asset.tag: Default string dmi.board.name: A7 Max dmi.board.vendor: Default string 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.ec.firmware.release: 1.3 dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr1.26:bd09/15/2025:br1.26:efr1.3:svnGEEKOM:pnA7Max:pvrDefaultstring:rvnDefaultstring:rnA7Max:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuGEEKOMA7Max:pfaA...MaxSeries: dmi.product.family: A...Max Series dmi.product.name: A7 Max dmi.product.sku: GEEKOM A7 Max dmi.product.version: Default string dmi.sys.vendor: GEEKOM ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute ** Attachment added: "hardware and package versions, topology, spontaneous failure, BAR-allocation failure," https://bugs.launchpad.net/bugs/2167202/+attachment/5999969/+files/ubuntu-thunderbolt-aqc113-bug-report.txt -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2167202 Title: thunderbolt/pci JHL7440/AQC113 fails to recover after tunnel disconnect; BAR allocation fails Status in linux package in Ubuntu: New Bug description: A bus-powered JHL7440 Thunderbolt enclosure containing an AQC113 spontaneously disconnects on both USB4 ports. The Thunderbolt device reconnects, but its PCI hierarchy is not restored reliably. In one captured recovery the AQC113 appeared after bridge-window allocation, received no BAR resources, and failed probe with error -5. Removing the complete JHL7440 PCI subtree and rescanning the empty parent bus resized the bridge windows and restored 10GbE without rebooting. GEEKOM A7 Max, BIOS 1.26 Ubuntu and 7.0.0-31-generic Wavlink WL-NWU342G, JHL7440, NVM 69.84 AQC113 firmware 1.5.48 Both USB4 ports affected 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 AlsaVersion: Advanced Linux Sound Architecture Driver Version k7.0.0-31-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' CasperMD5CheckResult: pass CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sun Sep 13 16:17:22 2026 InstallationDate: Installed on 2026-08-15 (29 days ago) InstallationMedia: Ubuntu-Server 26.04 "Resolute Raccoon" - Release amd64 (20260420.1) MachineType: GEEKOM A7 Max ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-31-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash pcie_aspm.policy=performance iommu=pt pci=nocrs pcie_port_pm=off crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) acpidump: dmi.bios.date: 09/15/2025 dmi.bios.release: 1.26 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: 1.26 dmi.board.asset.tag: Default string dmi.board.name: A7 Max dmi.board.vendor: Default string 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.ec.firmware.release: 1.3 dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr1.26:bd09/15/2025:br1.26:efr1.3:svnGEEKOM:pnA7Max:pvrDefaultstring:rvnDefaultstring:rnA7Max:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuGEEKOMA7Max:pfaA...MaxSeries: dmi.product.family: A...Max Series dmi.product.name: A7 Max dmi.product.sku: GEEKOM A7 Max dmi.product.version: Default string dmi.sys.vendor: GEEKOM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2167202/+subscriptions