AC56U and Merlin 378.53 : intermittent disconnects (both LAN and WLAN)

[charmainelooi]

Hi,

I am at my wits' end. I am getting intermittent internet disconnects on LAN and WLAN (3-5 times yesterday). I checked the ISP modem and it's working fine on their end. I rebooted the router and it works. I need some assistance in nailing the problem:

a) I checked the system log and the only error-like entries are these ( not sure why it's Jan 1st as well)


Jan 1 08:00:24 kernel: xhci_hcd 0000:00:0b.0: Failed to enable MSI-X
Jan 1 08:00:24 kernel: xhci_hcd 0000:00:0b.0: failed to allocate MSI entry

b) I am thinking of downgrading it but I am not sure which version is most "stable"

Thanks !

 

[jtp10181]

I'm on the same version, same router. No problems here. Check your idle temps. Mine runs around 80C usually which seems high to me, but it's been running like a champ. Are you doing a lot of P2P downloading by chance?


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[charmainelooi]

>> Are you doing a lot of P2P downloading by chance?

Yes, actually. 24/7.

 

[charmainelooi]

These are my temp readings:

2.4 GHz: 55°C - 5 GHz:58°C - CPU:90°C

 

[charmainelooi]

happened again 20 mins ago ...

 

[jtp10181]

Hopefully someone else who does a lot of P2P can offer some advice. I am betting if you stopped the downloads the problem would go away. There is probably some settings you need to adjust. The P2P makes a lot a connections and puts a lot of load on the router but I would think the AC56 could handle it.

Are you using VPN also? Or just a direct connection.

 

[Alfonatron]

I've found that my wifi performance on an N66u is very erratic when a p2p transfer is running, both on 376.49_5, which I was running until this week, and on the latest firmware. In my case, it manifests in the form of fluctuating download speeds, which keep resetting to 0kb/s and in webpage loading times jumping dramatically, though once a connection is established, they load as normal. All these problems disappear over a wired connection. These problems have only surfaced in the past month or so, which makes me wonder if it might be some type of hardware issue, as the 376.49_5 firmware had been working fine in the early months of the year.

EDIT: I suppose another possibility is that the p2p software on my laptop might have updated automatically and changed something relating to connection limits, which seem to be set to global:200 new transfers:60. Either way, I'm wondering why this problem would be limited to wifi and not wired.

 

[mlamlam]

I have the same problem but using the model AC-68U located in HK, CPU is around 87-90c and it will be unreachable nearly daily.
Since i'm not beside the router, i am not sure the router is hang or internet disconnected, what can be sure that is the internet connection is fine.

each time it is unreachable i have to call my father to reboot the router and it is fine for a period of time, tried to downgrade from 53 to 52_2 and it is also hang, now ask my father to reboot again and try to downgrade to 51

I have another router AC-66U, location is in singapore (very hot country) and firmware is 51, i think it is stable because the router works fine for couple of months already.

 

[jtp10181]

It is probably not heat related, probably overloading something with the high connections on the P2P

 

[mlamlam]

It is probably not heat related, probably overloading something with the high connections on the P2P

suppose 68u can support up to 300K sessions... i checked whether P2P the connection are around 1000-1200, speed was around 28mB/s download, 12 mB/s upload, then around 30mins-60mins it is not responding

now i change the NAS connected to internet directly instead, downgrade firmware to 51 and change a more powerful fan, now CPU temperature is 68c (original is 88-90c) and looks good now...

 

[jtp10181]

Maybe it's the extra features in the newer builds, the Ai Protection, traffic analyzer. Did you have that stuff turned on? I am pretty sure 51 does not have it at all.

 

[mtrains]

Maybe it's the extra features in the newer builds, the Ai Protection, traffic analyzer. Did you have that stuff turned on? I am pretty sure 51 does not have it at all.

I am on 378.52 and for me Traffic Analyzer was causing this problem. Once I turned it off I have been running for 50+ days now without needing a reboot.

 

[jtp10181]

I will have to turn it off on mine and see if the Temps drop. The info is so buggy and slow right now it is almost useless.

One thing I miss from tomato is the ip traffic graphs.

 

[hollandog]

I have disconnect issue since last week.
I don't use much P2P but since google photos launched I've been re-uploading the images in huge amount (few hundred gbs) and two 1080P IP-Cam running on my NAS.

Just tried to turn off Traffic analyzer and see if it helps.

 

[longwin]

It is probably not heat related, probably overloading something with the high connections on the P2P

If you use high connections P2P, I suggest that using the factory firmware 3.0.0.4.376_3754 would be
perfect stable. I use that version about 3 months 7x24 and never has problems. On average, I download
and upload 30T a month. This is the version I will stick on it.

The ASUS new DPI engine has some strange problem (although I am not sure), so I move 378 to 376.

 

[Alessio]

I'm on the same version ( RT-AC66U router), I never had this problem before 378.53 .

How can I disable trafic analyzer?

 

[jtp10181]

Go to the traffic analyzer page and switch it off. There is a toggle right there.

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[Alessio]

Thanks for your reply.
On my router ( RT-AC66U ) I don't see a page "traffic analyzer", I have a section called "traffic monitor" but I don't see an option to disable it.

 

[jtp10181]

Oh I think the AC66u doesn't have enough power for the analyzer, so it's disabled from the GUI. Might be a QoS setting. You could also try the stock firmware, or use one of john's forks which are based off the 374 line.

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[Alessio]

Hello, thanks for the reply.
I'll make a new post specific for my RT-AC66U .