TL-MR6400 disconnected many times per day
Hi everybody,
My Internet left many times per day on my TL-MR6400 v4, just bought....
When the problem happened, all lights of the modem are on.
I saw many users have same problem with different models of 4G modem. I saw answers given by tp-link staff.
So I create a manual apn profile, set manual dns servers on dhcp menu (8.8.8.8 and 8.8.4.4), check 4G connection with my phone but the problem is persistent.
Nothing appears in the system log, all steps indicate "pass" in diagnostic menu...
So I need to reboot the modem and it works again. So please help
status during problem...
System log during problem
diagnostic during problem
profile
dns
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@Kevin_Z I haven't received an the download link of the firmware yet. Please send me again.
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Hi Kevin,
I have the same issue of regular disconnect from internet despite no change in front panel leds.
SIM performance is around 50%
The problem does not seem to manifest itself if there is regular traffic like a streaming video.
Model TL-MR6400 APAC
H/W V3
F/W 1.1.0.0.9.1 v0001.0 Build 181116 Rel.57786n (uptodate)
Could I have a fix please?
thanks
hendo
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mr6400
v3
f/w TL- MR6400(EU)_V3_20190730
Log keep repeating
2020-03-04 00:31:56 [6] 4G: ERROR: 0x0000000E QMI_ERR_CALL_FAILED
2020-03-04 00:31:56 [6] 4G: ERROR: Call end reason = 3.
2020-03-04 00:31:56 [6] 4G: ERROR: Verbose Call end reason = 2001, type = 3.
2020-03-04 00:31:56 [6] 4G: USER: Fail to connect to the network, start autoconnect!
2020-03-04 00:31:56 [6] 4G: USER: Get user's profile now.
2020-03-04 00:31:56 [6] 4G: USER: GetCurrProf result is: ipver:0 staticApn:0 authType:0 pkgName:Internet profname:Internet apn:Internet usr: psw:
2020-03-04 00:31:56 [5] 4G: lte internet disconnected.
2020-03-04 00:32:00 [6] 4G: USER: Get user's profile now.
2020-03-04 00:32:00 [6] 4G: USER: GetCurrProf result is: ipver:0 staticApn:0 authType:0 pkgName:Internet profname:Internet apn:Internet usr: psw:
2020-03-04 00:32:00 [6] 4G: USER: Connected to the network!
2020-03-04 00:32:02 [5] 4G: LTE internet connected.
2020-03-04 00:32:36 [6] 4G: USER: The network disconnected, start autoconnect!
please help!
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My log shows the following results:
2020-03-03 08:37:18 [6] 4G: INFO: FSM: The current state is 2.
2020-03-03 08:37:18 [6] 4G: INFO: FSM: Connecting failed, mostly no svc.
2020-03-03 08:37:18 [6] 4G: USER: Fail to connect to the network, start autoconnect!
2020-03-03 08:37:18 [6] 4G: INFO: FSM: In connecting progress, now connecting.
2020-03-03 08:37:18 [6] 4G: INFO: FSM: Delayed backhaul connecting operaton.
2020-03-03 08:37:18 [6] 4G: USER: Get ISP^s profile now.
2020-03-03 08:37:18 [6] 4G: USER: GetCurrProf result is:ipver:0 staticApn:0 authType:2 pkgName:Orange profname:Orange apn:internet usr:internet psw:internet
2020-03-03 08:37:18 [6] 4G: INFO: FSM: Will connect immediately.
2020-03-03 08:37:18 [6] 4G: INFO: LG enter CMobileManagerQmi GetAttachProfileIPType
2020-03-03 08:37:18 [6] 4G: INFO: LG get profile setting pdp_type 3
2020-03-03 08:37:18 [6] 4G: USER: Get ISP^s profile now.
2020-03-03 08:37:18 [6] 4G: USER: GetCurrProf result is:ipver:0 staticApn:0 authType:2 pkgName:Orange profname:Orange apn:internet usr:internet psw:internet
2020-03-03 08:37:19 [6] 4G: INFO: FSM: Start the backhaul status checking timer.
2020-03-03 08:37:19 [6] 4G: INFO: FSM: Will check connection status in 10s later.
2020-03-03 08:37:19 [6] 4G: INFO: FSM: The current state is 2.
2020-03-03 08:37:19 [6] 4G: USER: The service is not available.
2020-03-03 08:37:19 [6] 4G: USER: Not registered, searching!
2020-03-03 08:37:19 [6] 4G: USER: Network type is NONE.
2020-03-03 08:37:19 [6] 4G: USER: The service status is limited.
2020-03-03 08:37:19 [6] 4G: USER: Network type is LTE.
2020-03-03 08:37:19 [6] 4G: ERROR: 0x0000000E QMI_ERR_CALL_FAILED
2020-03-03 08:37:19 [6] 4G: ERROR: Call end reason = 3.
2020-03-03 08:37:19 [6] 4G: ERROR: Verbose Call end reason = 2001, type = 3.
2020-03-03 08:37:19 [6] 4G: INFO: FSM: Connecting failed, mostly no svc.
2020-03-03 08:37:19 [6] 4G: INFO: Mobile network not registered, cannot connect.
@Kevin_Z - Did you had a chance to check the logs that i have send you ?
Can you maybe inform us what those errors are ?
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Hello Mike, please update the firmware to the latest one first. And then take some time to test its stability.
https://www.tp-link.com/en/support/download/tl-mr6400/v4/#Firmware
Any updates, be free to let us know.
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Hi @Kevin_Z,
I already did that, shortly after I posted my previous message.
I updated the firmware to version 1.10.0.0.9.1 v0001.0 Build 190521 Rel.38696n
It looks like the disconnects are gone.
However instead of disconnecting, the speed completely drops to 500 kbps ~700 kbps
When I switch the router off and on again, the problem remains.
To fix the problem, I need to do the following:
- Turn the router off
- Replace the SIM with another SIM (both SIMs are Vodafone 4G Max Speed, Unlimited data)
- Turn the router back on
- See that speed restores to normal (25 Mbps to 40 Mbps)
- Switch the SIMs back
- Now the speed is also normal again (25 Mbps to 40 Mbps) for the SIM that had the problem initially.
Then it works a day or so before the speed collapses again and I have to follow the procedure of switching SIMs again.
Please note that simply turning off the router, or disconnecting the router from the power adapter, does NOT work.
I must switch the SIM and switch it back to restore the speed.
So technically the disconnects are gone.
I now have an even bigger problem, because now I must switch the SIM and then switch it back again.
Isn't there a logging function, so that we can actually SEE what's going on?
I have turned on debug logging. Let's see if there's something in it when it happens again.
Mike
Edit March 6, 2020:
Speed dropped down again. Nothing in the log that indicates an issue. To be honest, the things that are logged are way too simple and cannot be used for debugging purposes. So that's worthless. We need verbose debug logging, to understand what this router is doing and what happens with the connection.
After testing more I found another way to get the speed back to normal. When I go to 'Advanced' -> 'Network' -> 'Internet' and change the Profile to another one, save it, and then back and save again, the speed is restored too.
I also saw that the Network Mode was set to 4G Preferred. I changed it to 4G only. Perhaps this has something to do with it too. Maybe the connection flipped over to 3G or so and doesn't comeback to 4G. So It's now fixed at 4G.
Now that the speed is restored to normal, I will continue checking it. I'll report back later.
Is anyone else having this too?
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Thanks for your reply. To help you to locate this issue and figure it out, our engineer will email you with the download link of the firmware and the information we need.
Then you can install it and take some time to test the performance.
Please check your email.
We released a new firmware which you can give it a go; besides, we need the whole system log so that we can do some analysis.
Our engineer will email you, please get in touch with them.
Good day.
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Hi @Kevin_Z,
Thank you for replying quickly.
I received the email + new firmware and logging tool. I will set it up and follow the instructions as explained to analyse.
Thank you.
Kind regards,
Mike
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Hi Thank you, got the email and already updated the firmware. The tool is already running. I will update you latest on Sunday with the results.
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