Public bug reported:
On a multi-AP Ubiquiti network, when roaming between APs, the system is
experiencing a deadlock in the mt7925 WiFi driver during connection
attempts. Multiple processes are stuck waiting for locks:
NetworkManager (PID 2837) - blocked trying to communicate with the WiFi hardware
kworker/u64:51 (PID 79092) - stuck in mt7925_mac_link_sta_remove trying to
cancel work
Multiple other processes (wpa_supplicant, goa-daemon, evolution apps) - all
waiting on NetworkManager
Root Cause
The driver is attempting to authenticate with WiFi access point
d8:b3:70:dc:4d:cf but got stuck at:
[12802.820969] wlp194s0: authenticate with d8:b3:70:dc:4d:cf
[12803.184753] wlp194s0: send auth to d8:b3:70:dc:4d:cf (try 1/3)
The system then hung for ~143 seconds before reporting blocked tasks.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: linux-image-6.17.0-7-generic 6.17.0-7.7
ProcVersionSignature: Ubuntu 6.17.0-7.7-generic 6.17.2
Uname: Linux 6.17.0-7-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
Date: Thu Dec 4 09:46:58 2025
InstallationDate: Installed on 2025-12-01 (2 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: LENOVO 21RMCTO1WW
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_rg6o5f@/vmlinuz-6.17.0-7-generic
root=ZFS=rpool/ROOT/ubuntu_rg6o5f ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
vt.handoff=1
RelatedPackageVersions:
firmware-sof N/A
linux-firmware 20250901.git993ff19b-0ubuntu1.4
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/05/2025
dmi.bios.release: 1.5
dmi.bios.vendor: LENOVO
dmi.bios.version: R32ET22W (1.05 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21RMCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.5
dmi.modalias:
dmi:bvnLENOVO:bvrR32ET22W(1.05):bd06/05/2025:br1.5:efr1.5:svnLENOVO:pn21RMCTO1WW:pvrThinkPadX13Gen6:rvnLENOVO:rn21RMCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21RM_BU_Think_FM_ThinkPadX13Gen6:
dmi.product.family: ThinkPad X13 Gen 6
dmi.product.name: 21RMCTO1WW
dmi.product.sku: LENOVO_MT_21RM_BU_Think_FM_ThinkPad X13 Gen 6
dmi.product.version: ThinkPad X13 Gen 6
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing
** Attachment added: "dmesg showing the problem"
https://bugs.launchpad.net/bugs/2133863/+attachment/5931356/+files/bug.txt
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https://bugs.launchpad.net/bugs/2133863
Title:
MediaTek MT7925 WiFi driver deadlock
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