@Kevin_Z I haven't received an the download link of the firmware yet. Please send me again.

@Kevin_Z 

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

@Kevin_Z 

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!

@Zhaowei 

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 ?

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:

1. Turn the router off
2. Replace the SIM with another SIM (both SIMs are Vodafone 4G Max Speed, Unlimited data)
3. Turn the router back on
4. See that speed restores to normal (25 Mbps to 40 Mbps)
5. Switch the SIMs back
6. 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?

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

@Kevin_Z 

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.