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scottyratcliffe
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7.6stable-7.7beta LTE quectel Modem disconnect

Thu Dec 08, 2022 11:28 pm

Since 7.6 I have been having issues with multiple quectel RM520N-GL modems keep disappearing and reappearing form interfaces list. It is happening from 3 wAP R ac units. The issue can be resolved by reverting back to 7.5 stable. the log files shows error "mbim: error: wdm send failed: 19" The modem is running firmware RM520NGLAAR01A05M4G
 
BitHaulers
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Re: 7.6stable-7.7beta LTE quectel Modem disconnect

Fri Dec 09, 2022 6:05 am

How are you fitting 520Ns on a WAP R AC? There are some board components that block the mpcie to m.2 adapters, never mind the longer ones for 5G modems. You got any pictures?
 
scottyratcliffe
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Re: 7.6stable-7.7beta LTE quectel Modem disconnect

Mon Dec 12, 2022 4:18 am

I use a NGFF M.2 To Mini PCIe Mini PCI-E Adapter For 3G 4G Moudle M.2 to mini pcie
https://www.aliexpress.us/item/32568021 ... _shipto=US

the only problem i have with the adapter is the modem is to long for the screw slot so it is held on with a twits tie.

Here is a picture of it.
https://photos.app.goo.gl/pjY5iRK3dWcoMbmS7
 
scottyratcliffe
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Re: 7.6stable-7.7beta LTE quectel Modem disconnect  [SOLVED]

Fri Dec 16, 2022 1:36 am

The 7.7rc1 seems to have fixed the issue, has been running fine on 2 of the 5 units i have rm520n-gl cards in
 
BitHaulers
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Re: 7.6stable-7.7beta LTE quectel Modem disconnect

Wed Jan 18, 2023 3:04 am

How hot does that get with no heatsink?

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