[FS#4238] TL-WR841N v13 (SoC MT7628AN) wifi disappears after some usage

[OpenWrt Bugs]

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User who did this - WayneJ (waynej) 

Attached to Project - OpenWrt/LEDE Project
Summary - TL-WR841N v13 (SoC MT7628AN) wifi disappears after some usage
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - openwrt-21.02
Due in Version - Undecided
Due Date - Undecided
Details - TP-LINK TL-WR841N v13 (SoC is MediaTek MT7628AN)
with OpenWrt 21.02.1 r16325-88151b8303

Steps:
Connect computer A via Ethernet to the router (TL-WR841N)
Connect computer B via wifi (802.11n, WPA3) to the router
At B side connect to a shared folder in A
At B side copy a very large file (in my case >200GB) from A
wait for a while, and the copy would fail (less than 5% is copied in my case)
check the wifi in B, and found that there is no wifi - even the original SSID is gone, and other computers/devices also could not find that SSID either.

I tested 3 times, and reproduced 3 times.
Pity I didn't try this out in the original firmware (before I overwrote it with OpenWRT).

This might be the same problem reported in FS#3325.
   

 

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4238

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