Wi-Fi stops working after 2 days on Archer C7v2

[fifonik]

I'm using Archer C2 v2 as well (1.9x then 1.10) and I have not noticed such issue.

The router is working without scheduled reboot and WiFi looks stable.
However, I cannot be certain as all LAN is wired and wireless used for mobiles/tablets only that are not in use all the time.

[ispyisail]

In my opinion many problems are caused by the environment

Thats why some people have problems and others do not?

[fifonik]

What kind of environment are you talking about?

Routers settings or WiFi devices that are connecting the routers and/or neighbours WiFi networks?

I asked because may be I also have the issue, but only have not noticed it yet.

P.S. I have similar lines in log, but at the same time my devices can connect to the router.

[aioyups]

I used to have this problem quite often with my WR842ND, does issuing "wifi" command solves the problem? Probably yes, but only temporary.

Logread didn't show anything relevant other than what you've described. What helped to shed a light, in this case, was gathering data from the following commands when that happened:

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cat /sys/kernel/debug/ieee80211/phy1/ath9k/ani
cat /sys/kernel/debug/ieee80211/phy1/ath9k/reset
cat /sys/kernel/debug/ieee80211/phy1/ath9k/queues

"Stuck Beacon", "Tx DMA stop error", "(BE): pending", would show quite high values when it happened.

Wifi command fixes the issue. Very likely, for another couple of days.
Did you manage to fix the issue or get a workaround (except scheduled reboot)?

As mentioned in the first post, the release from May 25 works fine for 1.5 months. Same devices, same configuration.

• Tips : try reflash to stock and reflash to latest gargoyle. Don't rush configuration. At least spare 5 mins after reboot. And don't click any button at least 30secs after every saving.

• tips : disable computer firewall and antivirus while configuring. Some firewall and web protection does interfere with gargoyle web gui.

This is what I've done to my 842n and it solve wifi instability always disconnect reconnect every 2-5mins.
Dunno why but the tips saying "don't rush configuration" does works.

[rseiler]

I've tried Ping Watchdog as a workaround, that was pointing to a repeater I own as well. Every time the error occurred and repeater stopped responding to pings, PW issued "wifi" command, and everything was back to "normal", at least for a while.

That sounds quite reasonable, since you can ping on a 1-minute interval. I once did something similar for basically the same problem (different router) with DD-WRT.

So, for the command, just "wifi" and that's it, no switches or anything? If that's supposed to restart wifi, it does it in a serious hurry. Other than wifi working again, is there any way of seeing that the command actually did anything?

[Lantis]

Yes “wifi” no switches.
Logread will tell you that the wifi devices have restarted. There’s a lot of information spat out by the command so just take it as it is

[d3fz]

So, for the command, just "wifi" and that's it, no switches or anything? If that's supposed to restart wifi, it does it in a serious hurry.

Yes, "wifi" command acts quite fast, almost imperceptible.

Other than wifi working again, is there any way of seeing that the command actually did anything?

The first thing I notice is that the devices (affected) wifi signal gets better, as well as throughput, which you can check by issuing the following command:

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cat /sys/kernel/debug/ieee80211/phy1/netdev:wlan1/stations/xx:xx:xx:xx:xx:xx/rc_stats

Where "xx:xx:xx:xx:xx:xx" is my repeater's MAC Address, which is connected to the router 24/7. 82 days uptime as we speak.

Note: "phy1/netdev:wlan1" may vary, depending on your router. Refers to the 2.4Ghz wireless interface.

[ErickEY]

Seems like have fixed the issue by going through the following steps:
- go back to stock (flash stripped image)
- flash stock Archer_C7_v2_150427
- reset to factory defaults
- flash Gargoyle factory
- reset settings
- restore previous settings

The router has been working w/o reboot and disabling ani for 2+ weeks already.