Public bug reported:
Starting 6.17.0-14-generic cdc_ncm fails to get link duplex status.
My bond device on top of cdc_ncm reports `failed to get link speed/duplex`.
ethtool reports `Duplex: Unknown! (255)`
Don't see any other error in the log, just know the device works with
`linux-image-6.14.0-37-generic` and `linux-image-6.8.0-94-generic`.
I have multiple hosts with this USB device and on all hosts the behavior is the
same: right after upgrade from 6.14 to 6.17 USB device stops working.
The device is Trendnet TUC-ET2G.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.17.0-14-generic 6.17.0-14.14~24.04.1
ProcVersionSignature: Ubuntu 6.17.0-14.14~24.04.1-generic 6.17.9
Uname: Linux 6.17.0-14-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CloudArchitecture: x86_64
CloudID: none
CloudName: none
CloudPlatform: none
CloudSubPlatform: config
Date: Thu Feb 5 08:12:43 2026
InstallationDate: Installed on 2023-07-07 (944 days ago)
InstallationMedia: Ubuntu-Server 22.04.2 LTS "Jammy Jellyfish" - Release amd64
(20230217.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: linux-signed-hwe-6.17
UpgradeStatus: Upgraded to noble on 2025-03-31 (311 days ago)
** Affects: linux-signed-hwe-6.17 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2140567
Title:
USB network adapter using cdc_ncm driver won't work starting
6.17.0-14-generic
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