Hi!
I've been experiencing this problem intermittently over 2 years at least on the 18.06 and 19.07 releases. For no aparent reason both wireless interfaces (wlan0 and wlan1) keeps disabling by it self and I have to manually re-enable through the luci Network->wireless page (just rebooting doesn't work). Some times this happens in minutes after I re-enable the wireless interfaces, some times it takes 2-10 days.
I don't known how to properly debug this issue the logs I saw didn't showed much info, any tips?
If I can't fix this, one workaround would be writing a script that constantly monitors these interfaces and re-enables it whenever they go down.
Here is my kernel log:
[ 0.000000] Linux version 4.14.171 (builder@buildhost) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r10947-65030d81f3)) #0 Thu Feb 27 21:05:12 2020
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
[ 0.000000] MIPS: machine is TP-Link TL-WDR4300 v1
[ 0.000000] SoC: Atheros AR9344 rev 2
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 08000000 @ 00000000 (usable)
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] On node 0 totalpages: 32768
[ 0.000000] free_area_init_node: node 0, pgdat 804fbf60, node_mem_map 81008b80
[ 0.000000] Normal zone: 256 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 32768 pages, LIFO batch:7
[ 0.000000] random: get_random_bytes called from 0x804ff740 with crng_init=0
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32512
[ 0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Writing ErrCtl register=00000000
[ 0.000000] Readback ErrCtl register=00000000
[ 0.000000] Memory: 123300K/131072K available (4028K kernel code, 163K rwdata, 532K rodata, 1220K init, 212K bss, 7772K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS: 51
[ 0.000000] CPU clock: 560.000 MHz
[ 0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6825930166 ns
[ 0.000010] sched_clock: 32 bits at 280MHz, resolution 3ns, wraps every 7669584382ns
[ 0.008316] Calibrating delay loop... 278.93 BogoMIPS (lpj=1394688)
[ 0.084946] pid_max: default: 32768 minimum: 301
[ 0.090058] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.097117] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.109253] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.119763] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.126332] pinctrl core: initialized pinctrl subsystem
[ 0.134211] NET: Registered protocol family 16
[ 0.142463] PCI host bridge /ahb/pcie-controller@180c0000 ranges:
[ 0.148968] MEM 0x0000000010000000..0x0000000013ffffff
[ 0.154568] IO 0x0000000000000000..0x0000000000000000
[ 0.176856] PCI host bridge to bus 0000:00
[ 0.181231] pci_bus 0000:00: root bus resource [mem 0x10000000-0x13ffffff]
[ 0.188596] pci_bus 0000:00: root bus resource [io 0x0000]
[ 0.194520] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[ 0.201760] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[ 0.210227] pci 0000:00:00.0: [168c:0033] type 00 class 0x028000
[ 0.210286] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x0001ffff 64bit]
[ 0.210342] pci 0000:00:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[ 0.210423] pci 0000:00:00.0: supports D1
[ 0.210435] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[ 0.210676] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
[ 0.210705] pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1001ffff 64bit]
[ 0.218543] pci 0000:00:00.0: BAR 6: assigned [mem 0x10020000-0x1002ffff pref]
[ 0.229177] clocksource: Switched to clocksource MIPS
[ 0.235575] NET: Registered protocol family 2
[ 0.241149] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.248570] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.255386] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.262296] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.268524] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.275472] NET: Registered protocol family 1
[ 0.280187] PCI: CLS 0 bytes, default 32
[ 0.283092] Crashlog allocated RAM at address 0x3f00000
[ 0.290001] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[ 0.302034] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.308242] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.328085] io scheduler noop registered
[ 0.332305] io scheduler deadline registered (default)
[ 0.338129] ar7200-usb-phy usb-phy: phy reset is missing
[ 0.345859] pinctrl-single 1804002c.pinmux: 544 pins at pa b804002c size 68
[ 0.354085] gpio-export gpio-export: 4 gpio(s) exported
[ 0.360453] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[ 0.369695] console [ttyS0] disabled
[ 0.373540] 18020000.uart: ttyS0 at MMIO 0x18020000 (irq = 9, base_baud = 2500000) is a 16550A
[ 0.382770] console [ttyS0] enabled
[ 0.390209] bootconsole [early0] disabled
[ 0.419898] m25p80 spi0.0: s25fl064k (8192 Kbytes)
[ 0.424811] 3 fixed-partitions partitions found on MTD device spi0.0
[ 0.431284] Creating 3 MTD partitions on "spi0.0":
[ 0.436152] 0x000000000000-0x000000020000 : "u-boot"
[ 0.442030] 0x000000020000-0x0000007f0000 : "firmware"
[ 0.448170] 2 tplink-fw partitions found on MTD device firmware
[ 0.454233] Creating 2 MTD partitions on "firmware":
[ 0.459297] 0x000000000000-0x000000185c43 : "kernel"
[ 0.465078] 0x000000185c44-0x0000007d0000 : "rootfs"
[ 0.470887] mtd: device 3 (rootfs) set to be root filesystem
[ 0.476667] 1 squashfs-split partitions found on MTD device rootfs
[ 0.483000] 0x0000003f0000-0x0000007d0000 : "rootfs_data"
[ 0.489286] 0x0000007f0000-0x000000800000 : "art"
[ 0.495935] libphy: Fixed MDIO Bus: probed
[ 0.840972] libphy: ag71xx_mdio: probed
[ 0.847658] switch0: Atheros AR8327 rev. 4 switch registered on mdio-bus.0
[ 1.498669] ag71xx 19000000.eth: connected to PHY at mdio-bus.0:00 [uid=004dd034, driver=Atheros AR8216/AR8236/AR8316]
[ 1.510205] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: rgmii
[ 1.519090] NET: Registered protocol family 10
[ 1.528831] Segment Routing with IPv6
[ 1.532729] NET: Registered protocol family 17
[ 1.537291] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 1.550460] 8021q: 802.1Q VLAN Support v1.8
[ 1.557196] hctosys: unable to open rtc device (rtc0)
[ 1.567919] VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
[ 1.580565] Freeing unused kernel memory: 1220K
[ 1.585163] This architecture does not have kernel memory protection.
[ 2.341108] init: Console is alive
[ 2.344780] init: - watchdog -
[ 2.539196] random: fast init done
[ 3.227174] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[ 3.318520] usbcore: registered new interface driver usbfs
[ 3.324222] usbcore: registered new interface driver hub
[ 3.329745] usbcore: registered new device driver usb
[ 3.340825] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 3.349237] ehci-platform: EHCI generic platform driver
[ 3.354807] ehci-platform 1b000000.usb: EHCI Host Controller
[ 3.360635] ehci-platform 1b000000.usb: new USB bus registered, assigned bus number 1
[ 3.368661] ehci-platform 1b000000.usb: irq 3, io mem 0x1b000000
[ 3.399226] ehci-platform 1b000000.usb: USB 2.0 started, EHCI 1.00
[ 3.406370] hub 1-0:1.0: USB hub found
[ 3.410573] hub 1-0:1.0: 1 port detected
[ 3.416039] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 3.426136] init: - preinit -
[ 4.064622] usb 1-1: new high-speed USB device number 2 using ehci-platform
[ 4.322440] random: procd: uninitialized urandom read (4 bytes read)
[ 4.329588] hub 1-1:1.0: USB hub found
[ 4.335974] hub 1-1:1.0: 4 ports detected
[ 4.459878] random: jshn: uninitialized urandom read (4 bytes read)
[ 4.703853] random: jshn: uninitialized urandom read (4 bytes read)
[ 6.336358] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 6.342418] IPv6: ADDRCONF(NETDEV_UP): eth0.1: link is not ready
[ 7.390455] eth0: link up (1000Mbps/Full duplex)
[ 7.395214] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 7.401976] IPv6: ADDRCONF(NETDEV_CHANGE): eth0.1: link becomes ready
[ 9.772397] jffs2: notice: (487) jffs2_build_xattr_subsystem: complete building xattr subsystem, 4 of xdatum (2 unchecked, 2 orphan) and 103 of xref (2 dead, 0 orphan) found.
[ 9.793563] mount_root: switching to jffs2 overlay
[ 9.822830] overlayfs: upper fs does not support tmpfile.
[ 9.837770] urandom-seed: Seeding with /etc/urandom.seed
[ 10.092290] eth0: link down
[ 10.140701] procd: - early -
[ 10.146584] procd: - watchdog -
[ 10.736720] procd: - watchdog -
[ 10.740292] procd: - ubus -
[ 10.765318] urandom_read: 5 callbacks suppressed
[ 10.765326] random: ubusd: uninitialized urandom read (4 bytes read)
[ 10.794542] random: ubusd: uninitialized urandom read (4 bytes read)
[ 10.802482] procd: - init -
[ 12.007052] urngd: v1.0.2 started.
[ 12.034341] kmodloader: loading kernel modules from /etc/modules.d/*
[ 12.357042] random: crng init done
[ 12.935120] SCSI subsystem initialized
[ 13.145870] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 13.181258] Loading modules backported from Linux version v4.19.98-0-gd183c8e2647a
[ 13.188941] Backport generated by backports.git v4.19.98-1-0-g8204eb99
[ 13.211867] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 13.239394] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[ 13.390639] usbcore: registered new interface driver usb-storage
[ 13.546533] wireguard: WireGuard 0.0.20190702 loaded. See www.wireguard.com for information.
[ 13.555160] wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
[ 13.625325] xt_time: kernel timezone is -0000
[ 13.682560] usbcore: registered new interface driver dm9601
[ 13.775298] PPP generic driver version 2.4.2
[ 13.790335] NET: Registered protocol family 24
[ 13.873087] ath: EEPROM regdomain: 0x0
[ 13.873096] ath: EEPROM indicates default country code should be used
[ 13.873100] ath: doing EEPROM country->regdmn map search
[ 13.873116] ath: country maps to regdmn code: 0x3a
[ 13.873123] ath: Country alpha2 being used: US
[ 13.873127] ath: Regpair used: 0x3a
[ 13.886992] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 13.888815] ieee80211 phy0: Atheros AR9340 Rev:2 mem=0xb8100000, irq=12
[ 13.895951] PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
[ 14.024580] ath: EEPROM regdomain: 0x0
[ 14.024589] ath: EEPROM indicates default country code should be used
[ 14.024593] ath: doing EEPROM country->regdmn map search
[ 14.024609] ath: country maps to regdmn code: 0x3a
[ 14.024615] ath: Country alpha2 being used: US
[ 14.024620] ath: Regpair used: 0x3a
[ 14.036485] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[ 14.038405] ieee80211 phy1: Atheros AR9300 Rev:4 mem=0xb0000000, irq=14
[ 14.089594] kmodloader: done loading kernel modules from /etc/modules.d/*
[ 27.854810] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 27.862131] eth0: link up (1000Mbps/Full duplex)
[ 27.866850] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 27.907051] br-lan: port 1(eth0.1) entered blocking state
[ 27.912595] br-lan: port 1(eth0.1) entered disabled state
[ 27.918393] device eth0.1 entered promiscuous mode
[ 27.923307] device eth0 entered promiscuous mode
[ 27.951188] br-lan: port 1(eth0.1) entered blocking state
[ 27.956675] br-lan: port 1(eth0.1) entered forwarding state
[ 27.962571] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[ 28.909651] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[ 31.488014] ath: EEPROM regdomain: 0x804c
[ 31.488023] ath: EEPROM indicates we should expect a country code
[ 31.488029] ath: doing EEPROM country->regdmn map search
[ 31.488034] ath: country maps to regdmn code: 0x3b
[ 31.488041] ath: Country alpha2 being used: BR
[ 31.488045] ath: Regpair used: 0x3b
[ 31.488053] ath: regdomain 0x804c dynamically updated by user
[ 31.488127] ath: EEPROM regdomain: 0x804c
[ 31.488131] ath: EEPROM indicates we should expect a country code
[ 31.488135] ath: doing EEPROM country->regdmn map search
[ 31.488140] ath: country maps to regdmn code: 0x3b
[ 31.488145] ath: Country alpha2 being used: BR
[ 31.488149] ath: Regpair used: 0x3b
[ 31.488154] ath: regdomain 0x804c dynamically updated by user
[ 34.026964] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 34.127425] br-lan: port 2(wlan0) entered blocking state
[ 34.132901] br-lan: port 2(wlan0) entered disabled state
[ 34.138702] device wlan0 entered promiscuous mode
[ 34.202622] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[ 34.223738] br-lan: port 3(wlan1) entered blocking state
[ 34.229138] br-lan: port 3(wlan1) entered disabled state
[ 34.234927] device wlan1 entered promiscuous mode
[ 34.239869] br-lan: port 3(wlan1) entered blocking state
[ 34.245268] br-lan: port 3(wlan1) entered forwarding state
[ 35.069262] br-lan: port 3(wlan1) entered disabled state
[ 35.101787] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 35.108427] br-lan: port 2(wlan0) entered blocking state
[ 35.113882] br-lan: port 2(wlan0) entered forwarding state
[ 35.246782] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[ 35.253751] br-lan: port 3(wlan1) entered blocking state
[ 35.259221] br-lan: port 3(wlan1) entered forwarding state
[43833.195325] device wlan1 left promiscuous mode
[43833.199958] br-lan: port 3(wlan1) entered disabled state
[43833.210644] device wlan0 left promiscuous mode
[43833.215368] br-lan: port 2(wlan0) entered disabled state
[43834.861293] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[43834.891376] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[43834.952968] br-lan: port 2(wlan0) entered blocking state
[43834.958436] br-lan: port 2(wlan0) entered disabled state
[43834.964208] device wlan0 entered promiscuous mode
[43834.969118] br-lan: port 2(wlan0) entered blocking state
[43834.974561] br-lan: port 2(wlan0) entered forwarding state
[43834.989637] br-lan: port 3(wlan1) entered blocking state
[43834.995114] br-lan: port 3(wlan1) entered disabled state
[43835.000868] device wlan1 entered promiscuous mode
[43835.009276] br-lan: port 3(wlan1) entered blocking state
[43835.014735] br-lan: port 3(wlan1) entered forwarding state
[43835.314225] br-lan: port 2(wlan0) entered disabled state
[43835.319990] br-lan: port 3(wlan1) entered disabled state
[43836.002814] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[43836.009506] br-lan: port 3(wlan1) entered blocking state
[43836.014956] br-lan: port 3(wlan1) entered forwarding state
[43836.081008] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[43836.087697] br-lan: port 2(wlan0) entered blocking state
[43836.093122] br-lan: port 2(wlan0) entered forwarding state
[45857.476021] device wlan0 left promiscuous mode
[45857.480756] br-lan: port 2(wlan0) entered disabled state
[45857.501692] device wlan1 left promiscuous mode
[45857.506329] br-lan: port 3(wlan1) entered disabled state
Thanks!