Question

During past couple of firmware version 7.x I have noticed that after some operation time modem is disconnected from the mobile network. WebUI is not accessible when this occurs, but ssh still working. I pushed modem syslog to PC and there seems to be issues with mob1s1a1 interface, a lot actually.

This log is from modem running on 7.03.4

Feb 23 16:06:58 RutX11 netifd: mob1s1a1 (16200): Failed to parse message data
Feb 23 16:06:58 RutX11 netifd: mob1s1a1 (16200): WARNING: Variable 'data' does not exist or is not an array/object
Feb 23 16:06:58 RutX11 netifd: mob1s1a1 (16200): Failed to connect to ubus
Feb 23 16:06:58 RutX11 netifd: message repeated 2 times: [ mob1s1a1 (16200): Failed to connect to ubus]
Feb 23 16:06:58 RutX11 netifd: Interface 'mob1s1a1' is now down
Feb 23 16:06:58 RutX11 netifd: Interface 'mob1s1a1' is setting up now
Feb 23 16:06:59 RutX11 netifd: mob1s1a1 (16221): wwan[16221] Using wwan usb device on bus 3-1
Feb 23 16:06:59 RutX11 netifd: mob1s1a1 (16221): wwan[16221] Using proto:qmi_wwan device:/dev/cdc-wdm0 iface:wwan0 desc:Quectel EG06
Feb 23 16:07:57 RutX11 netifd: Interface 'mob1s1a1' is setting up now
Feb 23 16:07:57 RutX11 netifd: mob1s1a1 (21329): wwan[21329] Using wwan usb device on bus 3-1
Feb 23 16:07:57 RutX11 netifd: mob1s1a1 (21329): wwan[21329] Using proto:qmi_wwan device:/dev/cdc-wdm0 iface:wwan0 desc:Quectel EG06
Feb 23 16:08:01 RutX11 netifd: mob1s1a1 (21329): Failed to connect to ubus
Feb 23 16:08:01 RutX11 netifd: mob1s1a1 (21329): Failed to connect to ubus
Feb 23 16:08:01 RutX11 netifd: mob1s1a1 (21329): Failed to parse message data
Feb 23 16:08:01 RutX11 netifd: mob1s1a1 (21329): WARNING: Variable 'list' does not exist or is not an array/object
Feb 23 16:08:01 RutX11 netifd: mob1s1a1 (21329): Creating context with PDP: 1
etc...

More log is in the attachment.

What is going on? When this occurs I cannot log to device via UI only ssh, so is there a way to export the troubleshoot file via CLI?
After reboot via CLI, modem is up and running again until next issue...

Updated: Modem encountered this issue once again attached you can find troubleshoot file "19-03-2023_10_30.troubleshoot.tar.gz"

Answer 1

Hello,

I would like you to attach a complete troubleshoot file to your question. Please, replicate the issue, then login to the device via SSH, execute the command below:

• troubleshoot.sh

Download WinSCP. Login to the device using the downloaded application as instructed here. Navigate to /tmp directory. Find and copy troubleshoot file to your computer and attach the file by editing your original question.

The logs in the file might provide more insight into the issue.

Best regards,

Comments

Thanks! I made a script to run troubleshoot.sh and collect the troubleshoot.tar.gz to a local PC after failing ping tests to Inet. Script triggers also reboot to modem as a last step, so it should get modem back to online too. As this unit is located a bit remote place.

Internal ping/reboot didn't work in this case. Wonder why?

I'll keep you updated.

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Modem encountered this issue once again and attached you can find troubleshoot file "19-03-2023_10_30.troubleshoot.tar.gz".
Same issue, modem dropped from network, but local computer was able to log in and get troubleshoot log before giving reboot to the device. After reboot modem came online again.

Modem uptime was 6d 20h 2min (remote logged) when this issue happened.

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Hello,

I have forwarded the issue to the developers to look into.

Once there are updates, I will inform you.

Best regards,

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Hello,

There appears to be memory leaks, causing your device to malfunction. For further investigation, I would like you to tell, which MODBUS registers are you using, to get parameter values?

Best regards,

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Here are MODBUS register that I read: 1, 3, 5, 7, 23, 87, 119, 139, 300, 1024

I just noticed that custom register block 1st address is 1025. I modified my MODBUS SW to start reading 1025. Let's see if this has an impact to memory leak.

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Special register reading change from 1024 to 1025 didn't make things any better. I can see that RAM usage is increasing steadily up day by day.

Any updates about memory leak reason or possible fix?

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Hello,

Official solutions will be included in 7.04.2 firmware release, which should be released within a couple of weeks.

At the moment, if the issue is urgent, I could send you a link of a test firmware.

Best regards,

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Hi,

If you have a fix FW, then I can try it.

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Sent you the download link in a private message.

Best regards,