WG3526 EM7565 Modem Present Not Connected

[darren.may]

Please help. Having trouble getting my new WG3526 router to recognize the EM7565 modem.

I get the disappearing text when I try to type anything in the AT Command box.

Any advice would be greatly appreciated. I am very new to all of this.

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Device Information
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2	
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0	
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1	
P: Vendor=1d6b ProdID=0002 Rev= 4.14	
S: Manufacturer=Linux 4.14.63 xhci-hcd	
S: Product=xHCI Host Controller	
S: SerialNumber=1e1c0000.xhci	
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA	
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub	
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms	
********************************************************************************************************	
T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=480 MxCh= 0	
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1	
P: Vendor=1199 ProdID=9091 Rev= 0.06	
S: Manufacturer=Sierra Wireless, Incorporated	
S: Product=Sierra Wireless EM7565 Qualcomm® Snapdragon™ X16 LTE-A	
S: SerialNumber=UF81859290020635	
C:* #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=500mA	
A: FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00	
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim	
E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=32ms	
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim	
I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim	
E: Ad=8e(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms	
E: Ad=0f(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms	
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial	
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms	
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms	
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms	
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)	
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms	
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms	
********************************************************************************************************	
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1	
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0	
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1	
P: Vendor=1d6b ProdID=0003 Rev= 4.14	
S: Manufacturer=Linux 4.14.63 xhci-hcd	
S: Product=xHCI Host Controller	
S: SerialNumber=1e1c0000.xhci	
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA	
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub	
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms

[JimHelms]

What firmware and version are you running?

[darren.may]

Hey Jim. I am running "openwrt-wg3526-GO2019-01-13-upgrade.bin"

[JimHelms]

That version should have the correct drivers for the em7565.

Has it ever been able to detect the modem port to issue AT commands?

[darren.may]

It seem to accept AT commands initially. Followed commands per this guide https://ltehacks.com/viewtopic.php?f=21&t=19

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at!entercnd="A710"
at!usbcomp = 1,1,1009
at!selrat=06
at!custom="IPV6ENABLE",1
at!reset

Some point after that no AT commands accepted.

[JimHelms]

That is your issue. That command is to place a MC7455 in MBIM.

The EM7565 requires:

Code: Select all

at!usbcomp=1,3,1009

As a result, you lost your AT command port.

Do you have a USB to M.2 adapter? If not, you will need to get one to plug into a Windows machine to restore it.

I will write up a tutorial tomorrow on how to restore it.

[darren.may]

Greatly appreciate your tutorial offer. I do not have a "USB to M.2 adapter". Will order one pronto.

Can you confirm this is what is needed? https://ltefix.com/shop/pcie-m-2/usb-to ... card-slot/

[JimHelms]

That will do it

[swwifty]

I saw this "disappearing at commands" issue with the latest version of Golden Orb as well. I had to actually revert to an older version, so I could issue any AT commands through the GUI.

I only saw this behavior when I put the modem in MBIM mode, QMI mode I didn't see it (and it actually worked just fine with GoldenOrb, so that must be a new thing?)

Edit: I was using a Sierra MC7455, for the record.

[JimHelms]

You can access the tutorial in mentioned HERE.

I have also updated the TUTORIAL on building the WG3526 using the latest GO2019 firmware since the EM7565 will operate in QMI composition (which is the OEM composition for the modem when one receives it).