run dmesg | grep wwan0 If you see something like [ 6124.624566] rndis_host 5-1:1.0 wwan0: register 'rndis_host' at usb-0000:0b:00.4-1, Mobile Broadband RNDIS device, f2:00:f5:90:be:3a [ 6124.631938] rndis_host 5-1:1.0 wwp11s0f4u1: renamed from wwan0
Then it is https://bugzilla.kernel.org/show_bug.cgi?id=220002 And for me it still broken since 6.14.0-15-generic , I can't upgrade to any next kernel version as it breaks RNDIS USB tethering ** Bug watch added: Linux Kernel Bug Tracker #220002 https://bugzilla.kernel.org/show_bug.cgi?id=220002 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-6.11 in Ubuntu. https://bugs.launchpad.net/bugs/2115555 Title: USB tethering broken in kernel 6.11.0-28 (works fine in 6.11.0-26) Status in linux-signed-hwe-6.11 package in Ubuntu: New Bug description: After upgrading to kernel 6.11.0-28 on Ubuntu 24.04, USB tethering using my Xiaomi phone stopped working. It was working normally with the previous kernel version 6.11.0-26. Symptoms: - USB tethering is enabled on the phone - `lsusb` detects the device as `Xiaomi Inc. Mi/Redmi series (RNDIS)` - However, no network interface such as `usb0` or `enx...` appears in `nmcli device` or `ip a` - Running `modprobe rndis_host`, `cdc_ether`, and `usbnet` manually has no effect - Tethering works perfectly when I boot back into kernel 6.11.0-26 This seems to be a regression in kernel 6.11.0-28, possibly related to USB RNDIS or networking modules not being loaded properly. System info: - Ubuntu 24.04 - Xiaomi device using RNDIS USB tethering - Kernel affected: 6.11.0-28-generic - Kernel confirmed working: 6.11.0-26-generic Please let me know if you need additional logs or diagnostics. I'd be happy to help debug this further. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.11.0-28-generic 6.11.0-28.28~24.04.1 ProcVersionSignature: hostname 6.11.0-28.28~24.04.1-generic 6.11.11 Uname: Linux 6.11.0-28-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.7 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat Jun 28 18:00:47 2025 InstallationDate: Installed on 2024-07-06 (357 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/usr/bin/zsh TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: linux-signed-hwe-6.11 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.11/+bug/2115555/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
