Public bug reported:
## Summary
MediaTek MT7902 (PCI ID 14c3:7902) is detected by PCI but no wireless
interface is created on Ubuntu 26.04.
## Hardware
* Laptop: ASUS Vivobook
* Wireless Adapter: MediaTek MT7902 (Filogic 310)
* PCI ID: 14c3:7902
* Subsystem: AzureWave 1a3b:5520
## Software
* Ubuntu 26.04
* Kernel: 7.0.0-27-generic
## Problem
The MT7902 adapter is detected by `lspci`, but no wireless interface
(`wlp*`) is created.
The `mt7921e` driver does not bind to the device.
### Evidence
* `lspci` detects the device:
* MEDIATEK MT7902 (14c3:7902)
* `modinfo mt7921e` does not contain PCI ID `14c3:7902`.
* `grep "14c3.*7902" /lib/modules/$(uname -r)/modules.alias` returns no output.
* `lspci -nnk` does not show "Kernel driver in use" for the MT7902 device.
## Troubleshooting Performed
* Reinstalled linux-firmware.
* Reloaded mt76 and mt7921e modules.
* Verified rfkill is not blocking Wi-Fi.
* Updated GRUB.
* Tested a newer mainline kernel (7.1.3), which failed to boot due to a VFS
kernel panic, so the issue could not be verified there.
## Expected Result
The MT7902 adapter should bind to the appropriate kernel driver and
create a wireless interface.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-27-generic 7.0.0-27.27
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: imsurajyd 4025 F.... wireplumber
/dev/snd/seq: imsurajyd 4005 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 6 02:52:41 2026
InstallationDate: Installed on 2026-07-06 (0 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 05ac:12a8 Apple, Inc. iPhone 5/5C/5S/6/SE/7/8/X/XR
Bus 001 Device 003: ID 322e:2012 BillionPixels USB2.0 HD UVC WebCam
Bus 001 Device 004: ID 13d3:3579 IMC Networks Wireless_Device
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: ASUSTeK COMPUTER INC. Vivobook_ASUSLaptop X1605VA_X1605VA
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic
root=UUID=109d5987-ec11-4ade-9eec-03b03929105f ro quiet splash pci=realloc=on
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: 12/27/2024
dmi.bios.release: 5.27
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: X1605VA.310
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X1605VA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrX1605VA.310:bd12/27/2024:br5.27:svnASUSTeKCOMPUTERINC.:pnVivobook_ASUSLaptopX1605VA_X1605VA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX1605VA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaVivobook:
dmi.product.family: Vivobook
dmi.product.name: Vivobook_ASUSLaptop X1605VA_X1605VA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2159602
Title:
MediaTek MT7902 (14c3:7902) Wi-Fi adapter not detected - no driver
binding on Ubuntu 26.04
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