Random net loss, 5g going down

[tim bowater]

Spoke to soon, over night it locked up

 

[Skywalker]

I have the exact same thing. After boot everything is ok for a couple of days. After that de 5G SSID seems to disappear...

 

[Serra]

My AC88U also got this problem, sometimes the 5G disappears and I'm forced to make some changes on 5G WIFI setting in order to make it restart the WIFI part or reboot the router.
From my observation, the 5G would likely drop after using 5G to download large files, though I'm not 100% sure about this.

I'm using the version 380.65, with AC88U A5 revision, which is said to have different chips BCM4366E instead of BCM4366.

 

[kublai]

I have the same problem on my RT-AC87U using 5GHZ band as it would stop working until I reboot the router, but the 2.4GHZ band doesn't have any problems.

 

[heuvep]

When i have installed the last firmware and i ping the router from my laptop with 5 ghz i have a lot of drop. every 3 ping i los one (see screenshot)

 

[L&LD]

Have you performed a full reset to factory defaults and then manually and minimally configured the router to secure it and connect to your ISP?

https://www.snbforums.com/threads/trying-to-decide-on-a-router.38023/#post-313153

The links included in the link above should help.

 

[anichols70]

I have done the configuration. The issue was better when it was on 380.64_2, but still happened. I upgraded yesterday to the new 380.65_2 and it's already dropped 4 times today. I'm at my wits end. It is sooo frustrating. I'm in now way blaming Merlin. This was happening before I started using Merlin. It's been slightly more stable since I have. I've ruled out heat. I'm not taxing the router by any stretch of the imagination. 15 clients maybe across both 2.4 and 5g? No huge files usually. 2.4 is never affected, just the 5.

Someone mentioned turning down the transmit power. I'm willing to so so, but am not positive of the steps needed to do so.

EDIT: After looking under Wireless->Professional, I don't see the TX Power setting. Assuming it was removed in the more recent builds?

 

[anichols70]

Out of curiosity, is anyone else who is seeing this issue running a Killer network card? I've just recently noticed that the network will be fine, sometimes for days, but will go down soon after I start my laptop that has the killer 1525 in it. Some searching shows others having issues with Asus routers, but nothing specific.

 

[zino86]

I'm on 380.59 and my 5G doesn't go down!

Sent from my HTC One using Tapatalk

 

[anichols70]

Might be something specific to my setup. 5g had been fine for a day. Turned on the laptop and it disappeared twice in an hour. Turned off the laptop and it's been fine since.

 

[anichols70]

Just an update for anyone else who might run into this. Tested a couple more times with my laptop. Network would be stable for hours/days. Turned on laptop and 5g would disappear within an hour each time. Replaced the Killer 1525 in my laptop with an Intel 8265 and haven't had a 5g issue since.

Most likely some kind of driver issue. Alienware's (Dell) last drivers for the card were from 2015 and still have issues. Drivers directly from the Killer site wouldn't work (50/50 chance the card would come up at all), and Windows 10 default drivers were what it was running when all the issues happened.

 

[interconnect]

I would suggest rolling back even further; I can confirm 5G drops on 380.64_2. Has happened a couple of times since I updated to 380.64_2... after a few weeks the 5 Ghz wifi goes dead (didn't check 2.4 Ghz network) and all internet stops working to wired clients as well. Haven't updated past 380.64_2 so I know this version definitely has issues too. Going to roll back to 380.63_2.

 

[herrdude]

I would suggest rolling back even further; I've can confirm 5G drops on 380.64_2. Has happened a couple of times since I updated to 380.64_2... after a few weeks the 5 Ghz wifi goes dead (didn't check 2.4 Ghz network) and all internet stops working to wired clients as well. Havn't updated past 380.64_2 so I know this version definitely has issues too. I have a RT-AC68U and my last known good firmware was 380.63_2. I'm going to roll back to that.

I am having exactly the same problems as you. I thought I could fix the problem by setting up a daily reboot through the Admin page. As it turns out, that isn't working either.

Did rolling back to 380.63_2 work out? It is so random how 380.64_2 and 380.65 stop working requiring a reboot.

Let us know!

 

[bandit8623]

I am having exactly the same problems as you. I thought I could fix the problem by setting up a daily reboot through the Admin page. As it turns out, that isn't working either.

Did rolling back to 380.63_2 work out? It is so random how 380.64_2 and 380.65 stop working requiring a reboot.

Let us know!

is everyone sure its not device related? i was having 5g dropouts untill i changed my Beacon Interval to 75 and i have my DTIM Interval at 4.

i have used all firmwares all the way up to now the latest 66 and my devices have been rock solid. 68u here

 

[herrdude]

is everyone sure its not device related? i was having 5g dropouts untill i changed my Beacon Interval to 75 and i have my DTIM Interval at 4.

i have used all firmwares all the way up to now the latest 66 and my devices have been rock solid. 68u here

I have the same problem as interconnect. Not only does 5ghz stop working but wired connections as well. I have changed the settings as you recommended. I will keep you posted.

 

[interconnect]

I am having exactly the same problems as you. I thought I could fix the problem by setting up a daily reboot through the Admin page. As it turns out, that isn't working either.

Did rolling back to 380.63_2 work out? It is so random how 380.64_2 and 380.65 stop working requiring a reboot.

Let us know!

Well so far so good. For me the 5G dropped after 2-3 weeks so I won't know for another week or two (downgraded last weekend). I will post an update then and let you know!

 

[tim bowater]

This has been happening to me for some time, its a nightmare. I followed all the guides, reseting the router and wiping it. Since i did all this everythings been ok, until......

only maybe 3-4 crashes in the last two months, at night.....

Apr 10 02:00:18 kernel: SysRq : Emergency Sync
Apr 10 02:00:18 kernel: Emergency Sync complete

This was last night, anybody know what is causing this?

 

[tim bowater]

Seems to be trying to shut down,

This is what should happen

Mar 16 14:46:17 kernel: SysRq : Emergency Sync
Mar 16 14:46:17 kernel: Emergency Sync complete
Mar 16 14:46:17 WEBDAV Server: daemon is stopped
Mar 16 14:46:17 NFS Server: daemon is stopped
Mar 16 14:46:19 Timemachine: daemon is stopped
Mar 16 14:46:19 MediaServer: daemon is stopped
Mar 16 14:46:19 iTunes: daemon is stopped
Mar 16 14:46:19 FTP Server: daemon is stopped
Mar 16 14:46:19 Samba Server: smb daemon is stopped
Mar 16 14:46:19 kernel: gro disabled
Mar 16 14:46:19 miniupnpd[1180]: shutting down MiniUPnPd
Mar 16 14:46:20 dnsmasq[3300]: exiting on receipt of SIGTERM
Mar 16 14:46:20 dnscrypt-proxy: stop dnscrypt-proxy
Mar 16 14:46:22 dropbear[24645]: Exit (admin): Terminated by signal
Mar 16 14:46:22 dropbear[593]: Early exit: Terminated by signal
Mar 16 14:46:22 wan6: wan6 interface v6in4 is down
Mar 16 14:46:22 stop_wan(): perform DHCP release

 

[tim bowater]

This is what is happening

Apr 10 02:00:18 kernel: SysRq : Emergency Sync
Apr 10 02:00:18 kernel: Emergency Sync complete
Aug 1 02:00:14 syslogd started: BusyBox v1.25.1
Aug 1 02:00:14 kernel: klogd started: BusyBox v1.25.1 (2017-03-29 00:40:13 EDT)
Aug 1 02:00:14 kernel: Linux version 2.6.36.4brcmarm (merlin@ubuntu-dev) (gcc version 4.5.3 (Buildroot 2012.02) ) #2 SMP PREEMPT Wed Mar 29 00:48:32 EDT 2017
Aug 1 02:00:14 kernel: CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c53c7f
Aug 1 02:00:14 kernel: CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Aug 1 02:00:14 kernel: Machine: Northstar Prototype
Aug 1 02:00:14 kernel: Ignoring unrecognised tag 0x00000000
Aug 1 02:00:14 kernel: bootconsole [earlycon0] enabled
Aug 1 02:00:14 kernel: Memory policy: ECC disabled, Data cache writealloc
Aug 1 02:00:14 kernel: MPCORE found at 19020000
Aug 1 02:00:14 kernel: PERCPU: Embedded 7 pages/cpu @c8215000 s5472 r8192 d15008 u65536
Aug 1 02:00:14 kernel: pcpu-alloc: s5472 r8192 d15008 u65536 alloc=16*4096
Aug 1 02:00:14 kernel: pcpu-alloc: [0] 0 [0] 1
Aug 1 02:00:14 kernel: Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60416
Aug 1 02:00:14 kernel: Kernel command line: root=/dev/mtdblock2 console=ttyS0,115200 init=/sbin/preinit earlyprintk debug
Aug 1 02:00:14 kernel: PID hash table entries: 1024 (order: 0, 4096 bytes)
Aug 1 02:00:14 kernel: Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Aug 1 02:00:14 kernel: Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Aug 1 02:00:14 kernel: Memory: 128MB 128MB = 256MB total
Aug 1 02:00:14 kernel: Memory: 255488k/255488k available, 6656k reserved, 0K highmem

 

[interconnect]

Well my RT-AC68U dropped wifi again on 380.63_2. Both 2.4 and 5 GHz. The admin interface went down as well. The ethernet network was still up and working as I was able to get online on a desktop connected via ethernet. That's about a week and half uptime... which is what I've been seeing; it stays up for about 2-3 weeks before going down. Will be rolling back to 380.62_1. That firmware I had running for 5 weeks so it should hopefully be good.