Onion Omega2Sp connecting and disconnecting from wan

Hello guys it is my first time to working with OpenWrt. My network topology is simple as possibile like device based on Onion Omega2Sp which is connected by WiFi with router Synology RT2600ac. The version of OpenWrt is 7.3.0. I have strange problem that device is easly connecting to the router but after some not long time device is disconnecting then trying to connecting in a loop. Then device is connected and again loop with disconnecting and etc. Another strange thing is that device is working slowly while using SSH protocole then UART. I know that is network interface but the latency in writing anything in terminal is about some 1-2 sec.

The power of signal is quite good:

root@$$$$:/# iw dev wlan0 station dump
Station 00:11:32:76:58:e7 (on wlan0)
        inactive time:  7130 ms
        rx bytes:       25377
        rx packets:     187
        tx bytes:       9428
        tx packets:     46
        tx retries:     125
        tx failed:      5
        beacon loss:    69
        beacon rx:      81
        rx drop misc:   1
        signal:         -30 [-30, -76] dBm
        signal avg:     -30 [-30, -76] dBm
        beacon signal avg:      226 dBm
        tx bitrate:     1.0 MBit/s
        rx bitrate:     1.0 MBit/s
        expected throughput:    2.197Mbps
        authorized:     yes
        authenticated:  yes
        associated:     yes
        preamble:       long
        WMM/WME:        yes
        MFP:            no
        TDLS peer:      no
        DTIM period:    1
        beacon interval:100
        short preamble: yes
        short slot time:yes
        connected time: 43 seconds

Network configuration:

root@$$$$:~# cat /etc/config/network 
config interface 'loopback'
        option ifname           'lo'
        option proto            'static'
        option ipaddr           '127.0.0.1'
        option netmask          '255.0.0.0'

config globals 'globals'
        option ula_prefix       'fdd3:9a1a:c9d9::/48'

config interface 'lan'
        option  ifname          'eth0'
        option proto            'dhcp'

config interface 'wlan'
        option  ifname          'wlan0'
        option proto            'dhcp'

config interface 'wan'
        option proto            'dhcp'
        option ipv6             'auto'

Wireless configuration:

root@$$$$:~# cat /etc/config/wireless 

config wifi-device 'radio0'
	option type 'mac80211'
	option channel '11'
	option hwmode '11g'
	option path 'platform/10300000.wmac'
	option htmode 'HT20'
	option disabled '0'

config wifi-iface 'default_radio0'
	option device 'radio0'
	option network 'wan'
	option mode 'sta'
	option ssid 'SynologySmartConnect'
	option encryption 'psk2'
	option key '****'

Logs showing connecting and disconnecting:

Mon Aug 26 14:56:04 2019 daemon.notice netifd: Interface 'wan' is enabled
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.258519] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.277313] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.339178] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.356978] wlan0: authenticated
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.366714] wlan0: associate with 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:05 2019 daemon.notice netifd: lan (1401): udhcpc: sending discover
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.654254] wlan0: associate with 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:05 2019 kern.info kernel: [   36.907263] wlan0: associate with 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 14:56:06 2019 kern.info kernel: [   37.061525] wlan0: association with 00:11:32:76:58:e7 timed out
Mon Aug 26 14:56:07 2019 kern.info kernel: [   38.418442] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 14:56:07 2019 kern.info kernel: [   38.436203] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:07 2019 kern.info kernel: [   38.549018] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:07 2019 kern.info kernel: [   38.683049] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 14:56:07 2019 kern.info kernel: [   38.846228] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 14:56:08 2019 daemon.notice netifd: lan (1401): udhcpc: sending discover
Mon Aug 26 14:56:09 2019 kern.info kernel: [   40.598482] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 14:56:09 2019 kern.info kernel: [   40.620509] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:09 2019 kern.info kernel: [   40.727928] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:09 2019 kern.info kernel: [   40.865816] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 14:56:10 2019 kern.info kernel: [   41.156474] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 14:56:12 2019 kern.info kernel: [   43.418483] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 14:56:12 2019 kern.info kernel: [   43.436006] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:12 2019 kern.info kernel: [   43.544280] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:12 2019 kern.info kernel: [   43.796479] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 14:56:12 2019 kern.info kernel: [   43.884132] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 14:56:13 2019 daemon.info procd: - init complete -
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.131643] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.147549] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.256489] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.264464] wlan0: authenticated
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.276580] wlan0: associate with 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.467318] wlan0: associate with 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.642510] wlan0: associate with 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 14:56:22 2019 kern.info kernel: [   53.757367] wlan0: association with 00:11:32:76:58:e7 timed out
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.258388] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.276062] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.283451] wlan0: authenticated
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.296581] wlan0: associate with 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.460167] wlan0: associate with 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.662532] wlan0: associate with 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.714121] wlan0: RX AssocResp from 00:11:32:76:58:e7 (capab=0x431 status=0 aid=1)
Mon Aug 26 14:56:44 2019 kern.info kernel: [   75.722174] wlan0: associated
Mon Aug 26 14:56:44 2019 daemon.notice netifd: Network device 'wlan0' link is up
Mon Aug 26 14:56:44 2019 daemon.notice netifd: Interface 'wan' has link connectivity
Mon Aug 26 14:56:44 2019 daemon.notice netifd: Interface 'wan' is setting up now
Mon Aug 26 14:56:44 2019 daemon.notice netifd: wan (1647): udhcpc: started, v1.28.3
Mon Aug 26 14:56:44 2019 daemon.notice netifd: wan (1647): udhcpc: sending discover
Mon Aug 26 14:56:45 2019 kern.info kernel: [   76.840265] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Mon Aug 26 14:56:47 2019 daemon.info avahi-daemon[1472]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::42a3:6bff:fec3:210c.
Mon Aug 26 14:56:47 2019 daemon.info avahi-daemon[1472]: New relevant interface wlan0.IPv6 for mDNS.
Mon Aug 26 14:56:47 2019 daemon.info avahi-daemon[1472]: Registering new address record for fe80::42a3:6bff:fec3:210c on wlan0.*.
Mon Aug 26 14:56:47 2019 daemon.notice netifd: wan (1647): udhcpc: sending discover
Mon Aug 26 14:56:50 2019 daemon.notice netifd: wan (1647): udhcpc: sending discover
Mon Aug 26 14:56:53 2019 daemon.notice netifd: wan (1647): udhcpc: sending select for 192.168.1.71
Mon Aug 26 14:56:53 2019 daemon.notice netifd: wan (1647): udhcpc: lease of 192.168.1.71 obtained, lease time 86400
Mon Aug 26 14:56:54 2019 daemon.info avahi-daemon[1472]: Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.71.
Mon Aug 26 14:56:54 2019 daemon.info avahi-daemon[1472]: New relevant interface wlan0.IPv4 for mDNS.
Mon Aug 26 14:56:54 2019 daemon.info avahi-daemon[1472]: Registering new address record for 192.168.1.71 on wlan0.IPv4.
Mon Aug 26 14:56:54 2019 daemon.notice netifd: Interface 'wan' is now up
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: reading /tmp/resolv.conf.auto
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain test
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain onion
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain localhost
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain local
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain invalid
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain bind
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using local addresses only for domain lan
Mon Aug 26 14:56:54 2019 daemon.info dnsmasq[795]: using nameserver 192.168.1.1#53
Mon Aug 26 14:57:11 2019 kern.notice kernel: [  102.036534] random: crng init done
Mon Aug 26 14:57:11 2019 kern.notice kernel: [  102.040005] random: 6 urandom warning(s) missed due to ratelimiting
Mon Aug 26 15:01:01 2019 daemon.notice netifd: Network device 'wlan0' link is down
Mon Aug 26 15:01:01 2019 daemon.notice netifd: Interface 'wan' has link connectivity loss
Mon Aug 26 15:01:01 2019 daemon.info avahi-daemon[1472]: Withdrawing address record for 192.168.1.71 on wlan0.
Mon Aug 26 15:01:01 2019 daemon.info avahi-daemon[1472]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.71.
Mon Aug 26 15:01:01 2019 daemon.info avahi-daemon[1472]: Interface wlan0.IPv4 no longer relevant for mDNS.
Mon Aug 26 15:01:01 2019 daemon.notice netifd: wan (1647): udhcpc: received SIGTERM
Mon Aug 26 15:01:04 2019 kern.info kernel: [  335.728066] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:01:04 2019 kern.info kernel: [  335.746193] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:01:04 2019 kern.info kernel: [  335.815218] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:01:04 2019 kern.info kernel: [  335.980380] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:01:05 2019 kern.info kernel: [  336.176164] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:01:06 2019 kern.info kernel: [  337.928128] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:01:06 2019 kern.info kernel: [  337.946015] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:01:06 2019 kern.info kernel: [  337.959443] wlan0: authenticated
Mon Aug 26 15:01:06 2019 kern.info kernel: [  337.966714] wlan0: associate with 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:01:07 2019 kern.info kernel: [  338.265441] wlan0: associate with 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:01:07 2019 kern.info kernel: [  338.492376] wlan0: associate with 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:01:07 2019 kern.info kernel: [  338.726477] wlan0: association with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:01:09 2019 kern.info kernel: [  340.978366] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:01:10 2019 kern.info kernel: [  340.996223] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:01:10 2019 kern.info kernel: [  341.105878] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:01:10 2019 kern.info kernel: [  341.298133] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:01:10 2019 kern.info kernel: [  341.536490] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:01:20 2019 kern.info kernel: [  351.782530] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:01:20 2019 kern.info kernel: [  351.798329] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:01:20 2019 kern.info kernel: [  351.882033] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:01:21 2019 kern.info kernel: [  352.126492] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:01:21 2019 kern.info kernel: [  352.201087] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:01:42 2019 kern.info kernel: [  373.728311] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:01:42 2019 kern.info kernel: [  373.746059] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:01:42 2019 kern.info kernel: [  373.825550] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:01:42 2019 kern.info kernel: [  373.962461] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:01:43 2019 kern.info kernel: [  374.181533] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:02:14 2019 kern.info kernel: [  405.708288] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:02:14 2019 kern.info kernel: [  405.726272] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:02:14 2019 kern.info kernel: [  405.866476] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:02:14 2019 kern.info kernel: [  405.874523] wlan0: authenticated
Mon Aug 26 15:02:14 2019 kern.info kernel: [  405.886574] wlan0: associate with 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:02:15 2019 kern.info kernel: [  405.991479] wlan0: associate with 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:02:15 2019 kern.info kernel: [  406.226483] wlan0: associate with 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:02:15 2019 kern.info kernel: [  406.297179] wlan0: association with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:03:16 2019 kern.info kernel: [  467.797966] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:03:16 2019 kern.info kernel: [  467.816062] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:03:16 2019 kern.info kernel: [  467.897518] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:03:17 2019 kern.info kernel: [  468.056477] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:03:17 2019 kern.info kernel: [  468.137361] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:04:18 2019 kern.info kernel: [  529.648016] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:04:18 2019 kern.info kernel: [  529.664061] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:04:18 2019 kern.info kernel: [  529.746224] wlan0: send auth to 00:11:32:76:58:e7 (try 2/3)
Mon Aug 26 15:04:19 2019 kern.info kernel: [  530.019239] wlan0: send auth to 00:11:32:76:58:e7 (try 3/3)
Mon Aug 26 15:04:19 2019 kern.info kernel: [  530.155772] wlan0: authentication with 00:11:32:76:58:e7 timed out
Mon Aug 26 15:05:50 2019 kern.info kernel: [  621.698146] wlan0: authenticate with 00:11:32:76:58:e7
Mon Aug 26 15:05:50 2019 kern.info kernel: [  621.712798] wlan0: send auth to 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:05:50 2019 kern.info kernel: [  621.725658] wlan0: authenticated
Mon Aug 26 15:05:50 2019 kern.info kernel: [  621.736571] wlan0: associate with 00:11:32:76:58:e7 (try 1/3)
Mon Aug 26 15:05:50 2019 kern.info kernel: [  621.856362] wlan0: RX AssocResp from 00:11:32:76:58:e7 (capab=0x431 status=0 aid=1)
Mon Aug 26 15:05:50 2019 kern.info kernel: [  621.864367] wlan0: associated
Mon Aug 26 15:05:50 2019 daemon.notice netifd: Network device 'wlan0' link is up
Mon Aug 26 15:05:50 2019 daemon.notice netifd: Interface 'wan' has link connectivity
Mon Aug 26 15:05:50 2019 daemon.notice netifd: Interface 'wan' is setting up now
Mon Aug 26 15:05:50 2019 daemon.notice netifd: wan (2985): udhcpc: started, v1.28.3
Mon Aug 26 15:05:51 2019 daemon.notice netifd: wan (2985): udhcpc: sending discover
Mon Aug 26 15:05:54 2019 daemon.notice netifd: wan (2985): udhcpc: sending discover
Mon Aug 26 15:05:57 2019 daemon.notice netifd: wan (2985): udhcpc: sending discover
Mon Aug 26 15:06:15 2019 daemon.notice netifd: wan (2985): udhcpc: sending select for 192.168.1.71
Mon Aug 26 15:06:15 2019 daemon.notice netifd: wan (2985): udhcpc: lease of 192.168.1.71 obtained, lease time 86400
Mon Aug 26 15:06:15 2019 daemon.info avahi-daemon[1472]: Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.71.
Mon Aug 26 15:06:15 2019 daemon.info avahi-daemon[1472]: New relevant interface wlan0.IPv4 for mDNS.
Mon Aug 26 15:06:15 2019 daemon.info avahi-daemon[1472]: Registering new address record for 192.168.1.71 on wlan0.IPv4.
Mon Aug 26 15:06:15 2019 daemon.warn dnsmasq[795]: no servers found in /tmp/resolv.conf.auto, will retry
Mon Aug 26 15:06:15 2019 daemon.notice netifd: Interface 'wan' is now up
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: reading /tmp/resolv.conf.auto
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain test
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain onion
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain localhost
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain local
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain invalid
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain bind
Mon Aug 26 15:06:15 2019 daemon.info dnsmasq[795]: using local addresses only for domain lan

Thank you for any help and advices!

That doesn't seem right. What is the output of cat /etc/openwrt_release ?
Have you scanned the area for interference from neighboring Wifis?

A few more things

  • I don't see the point of DHCP protocol in LAN interface. It might lead to issues with dual gateway.
  • You have mixed wan and wlan for outside interface. Keep one of them and delete the other.

Given that this device (rt2600ac) isn't supported by OpenWrt (although it is apparently possible to shoehorn the nbg6817 images into it), "7.3.0" must refer to the OEM firmware, which has very little to do with OpenWrt and can't be supported here.

Thanks for feedback, the output for /etc/openwrt_release is:

root@$$$$:/# cat /etc/openwrt_release 
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='18.06.0'
DISTRIB_REVISION='r7188-b0b5c64c22'
DISTRIB_TARGET='ramips/mt76x8'
DISTRIB_ARCH='mipsel_24kc'
DISTRIB_DESCRIPTION='OpenWrt 18.06.0 r7188-b0b5c64c22'
DISTRIB_TAINTS='no-all'

It seems to be supported.
Better upgrade to the latest 18.06.4 version and also check the other things I told you earlier.

On your rt2600ac ap ... set;

2.4ghz restrict-to-20mhz
2.4ghz channel-fixed

if this helps... try to update your Onion like @trendy says... that way you can see if the problem has been addressed in openwrt sources...