[FS#3802] DFS channel change causes 5GHz WiFi to fail (Attachment added)

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Tue May 11 17:54:01 PDT 2021


A new Flyspray task has been opened.  Details are below. 

User who did this - Leon Möller (jkhsjdhjs) 

Attached to Project - OpenWrt/LEDE Project
Summary - DFS channel change causes 5GHz WiFi to fail
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - openwrt-19.07
Due in Version - Undecided
Due Date - Undecided
Details - My TP-Link AC1750 Archer C7 v5 just detected another WiFi on the same 5GHz channel. Thus it tried to switch to a different channel, which apparently succeeded. Afterwards the kernel experienced a bug causing the 5GHz WiFi to fail indefinitely.

I've attached a list of installed packages and the relevant syslog:
Lines   1 -   7 show the change to a different channel
Lines   8 -  10 show a device disconnecting and reconnecting (probably because of the channel switch)
Lines  11 -  82 are SWBA overrun warnings
Lines  90 - 190 are kernel traces
Lines 255 - 261 show a device connecting to the 2.4GHz WiFi, because the 5GHz is no longer available
Lines 271 - 278 show other devices being disassociated as they are also unable to connect again


One or more files have been attached.

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