[FS#3455] tl-wdr3600 5ghz wireless multiple disconnection in client mode (Attachment added)

[OpenWrt Bugs]

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

User who did this - re-bob (re-bob) 

Attached to Project - OpenWrt/LEDE Project
Summary - tl-wdr3600 5ghz wireless multiple disconnection in client mode
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on
TL WDR3600 v1 
 - Software versions of OpenWrt/LEDE release, packages, etc.
OpenWrt 19.07.4 r11208-ce6496d796 / LuCI openwrt-19.07 branch git-20.313.59566-7460e9d
kmod-ath9k - 4.14.195+4.19.137-1-2 (Atheros AR9580 802.11an)

root at OpenWrt:~# iw phy phy1 info
Wiphy phy1
        max # scan SSIDs: 4
        max scan IEs length: 2261 bytes
        max # sched scan SSIDs: 0
        max # match sets: 0
        max # scan plans: 1
        max scan plan interval: -1
        max scan plan iterations: 0
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Device supports AP-side u-APSD.
        Device supports T-DLS.
        Available Antennas: TX 0x3 RX 0x3
        Configured Antennas: TX 0x3 RX 0x3
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * AP/VLAN
                 * monitor
                 * mesh point
                 * P2P-client
                 * P2P-GO
                 * outside context of a BSS
        Band 2:
                Capabilities: 0x11ef
                        RX LDPC
                        HT20/HT40
                        SM Power Save disabled
                        RX HT20 SGI
                        RX HT40 SGI
                        TX STBC
                        RX STBC 1-stream
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 8 usec (0x06)
                HT TX/RX MCS rate indexes supported: 0-15
                Frequencies:
                        * 5180 MHz [36] (19.0 dBm)
                        * 5200 MHz [40] (19.0 dBm)
                        * 5220 MHz [44] (19.0 dBm)
                        * 5240 MHz [48] (19.0 dBm)
                        * 5260 MHz [52] (19.0 dBm) (radar detection)
                        * 5280 MHz [56] (19.0 dBm) (radar detection)
                        * 5300 MHz [60] (19.0 dBm) (radar detection)
                        * 5320 MHz [64] (19.0 dBm) (radar detection)
                        * 5500 MHz [100] (19.0 dBm) (radar detection)
                        * 5520 MHz [104] (19.0 dBm) (radar detection)
                        * 5540 MHz [108] (19.0 dBm) (radar detection)
                        * 5560 MHz [112] (19.0 dBm) (radar detection)
                        * 5580 MHz [116] (19.0 dBm) (radar detection)
                        * 5600 MHz [120] (19.0 dBm) (radar detection)
                        * 5620 MHz [124] (19.0 dBm) (radar detection)
                        * 5640 MHz [128] (19.0 dBm) (radar detection)
                        * 5660 MHz [132] (19.0 dBm) (radar detection)
                        * 5680 MHz [136] (19.0 dBm) (radar detection)
                        * 5700 MHz [140] (19.0 dBm) (radar detection)
                        * 5745 MHz [149] (13.0 dBm)
                        * 5765 MHz [153] (13.0 dBm)
                        * 5785 MHz [157] (13.0 dBm)
                        * 5805 MHz [161] (13.0 dBm)
                        * 5825 MHz [165] (13.0 dBm)
        valid interface combinations:
                 * #{ managed }