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Ac86u 2.4Ghz Wifi stop working

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Hey! I have an Ac86u / AC2900 router that is losing 2.4Ghz Wifi. 5Ghz and ethernet work. I have previously run Asus merlin software, always updated to the latest. But since I am having problems with 2.4Ggz Wifi, I decided to switch to Asus' official software. Installed Asus own directly over Merlin, then I did a WPS reset. But the problem remains. I saved a copy on syslog, is it something I dare to publish here on the forum.
 
How do you have the 2.4 set? Usually recommend 20 mhz set to ch 1, 6, or 11. With rhe new firmware Dual Band SmartConnect works well. You might want to overflash the Asus firmware again.
 
Aug 20 15:41:29 wlceventd: WLCEVENTD wlceventd_proc_event(529): wl0.1: Assoc 6A:A4:A2:C3:4D:B8, status: Successful (0)
Aug 20 15:41:30 kernel: DUMP CONSOLE: d 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.110 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.123 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.140 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.150 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.163 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.173 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.180 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.187 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.197 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.204 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.211 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.223 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.229 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.241 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.248 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.258 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.268 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.274 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.282 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.289 wl0.1: wlc_send_bar: seq 0x387 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.343 wl0.1: wlc_send_bar: seq 0x38d tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.552 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.578 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.584 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.591 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.599 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.608 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.614 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.622 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.636 wl0.1: wlc_send_bar: seq 0x396 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.726 wl0.1: wlc_send_bar: seq 0x398 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.757 wl0.1: wlc_send_bar: seq 0x398 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.819 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.825 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.839 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.848 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.854 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.864 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.871 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.883 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.892 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.899 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.908 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.914 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.921 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.927 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.938 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.950 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.957 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.966 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.974 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.984 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.990 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106116.999 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106117.006 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106117.707 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106117.714 wl0.1: wlc_send_bar: seq 0x39a tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.005 wl0.1: wlc_send_bar: seq 0x39c tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.119 wl0.1: wlc_send_bar: seq 0x39f tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.232 wl0.1: wlc_send_bar: seq 0x3a1 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.555 wl0.1: wlc_send_bar: seq 0x3a1 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.832 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.838 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.845 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.855 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.861 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.868 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.881 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.891 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.897 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.907 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.914 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.924 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.931 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.938 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.945 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.955 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
Aug 20 15:41:30 kernel: DUMP CONSOLE: 106118.962 wl0.1: wlc_send_bar: seq 0x3a3 tid 0
 
Hey! I have an Ac86u / AC2900 router that is losing 2.4Ghz Wifi. 5Ghz and ethernet work. I have previously run Asus merlin software, always updated to the latest. But since I am having problems with 2.4Ggz Wifi, I decided to switch to Asus' official software. Installed Asus own directly over Merlin, then I did a WPS reset. But the problem remains. I saved a copy on syslog, is it something I dare to publish here on the forum.

Probably a hardware failure. What is the year and country of manufacture noted on the label? Beware 2018 China.

OE
 
Unfortunately, manufacture 2018 China.

I had two of those. Asus replaced one in warranty (2020 Vietnam). I'm replacing one out of warranty, due here tomorrow. The biggest problem when they start failing is they develop trouble masked by firmware releases that you waste time troubleshooting. I debated not replacing it but decided to get back onboard for AiMesh 2.0 (802.11k/v) since it keeps improving and has worked well here... better than repeaters and APs. Plus I'm supporting some other sites so I should stick with it.

Still, having a batch of routers die undermines one of the attributes of AiMesh... that its hardware can be incrementally purchased and upgraded vs. buying a whole new mesh system.

My 2xRT-AC86U outlay so far is 2x$140 + $25 RMA return + 1x$180 = $485... worse than expected but still tolerable. I'm hoping the early defects have passed and that I'll buy time for WiFi 6e to mature.

OE
 
2020 revision here. 2.4 ghz dropping all connections. forcing me to reboot router. returning.
 

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