<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> <span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">Hi,</span><br> </div> <div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div><br> </div> <div>My team and I tried multiples Huawei MS2372h variants and two of them (the 158 and 518) show similar initialisation errors.</div> <div><br> </div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <info> [1595945084.395531] [device /sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3] creating modem with plugin 'huawei' and '3' ports</div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <warn> [1595945084.411342] [plugin/huawei] could not grab port ttyUSB1: Cannot add port 'tty/ttyUSB1', unhandled serial type</div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <info> [1595945084.416027] [base-manager] modem for device '/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3' successfully created</div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <warn> [1595945084.971664] [modem0] modem couldn't be initialized: couldn't load current capabilities: Failed to determine modem capabilities.</div> <div><br> </div> <div>After init, the modems are in an unavailable state from Network Manager point of view and of course they cannot establish a connection.</div> <div><span style="">No info (model, firmware...) is present in mmcli output:</span><br> </div> <div> -------------------------</div> <div> General | dbus path: /org/freedesktop/ModemManager1/Modem/1</div> <div> -------------------------</div> <div> System | device: /sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2</div> <div> | drivers: option1</div> <div> | plugin: huawei</div> <div> | primary port: ttyUSB2</div> <div> | ports: ttyUSB0 (at), ttyUSB2 (at)</div> <div> -------------------------</div> <div> Status | signal quality: 0% (cached)</div> <div> -------------------------</div> <div> Modes | supported: allowed: any; preferred: none</div> <div> | current: allowed: any; preferred: none</div> <div><br> </div> <div>In ModemManager debug logs, there are many AT command errors like this one:</div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <debug> [1595945084.962262] [modem0/ttyUSB2/at] --> 'AT+CGMM<CR>'</div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <debug> [1595945084.970688] [modem0/ttyUSB2/at] <-- '<CR><LF>ERROR<CR><LF>'</div> <div>Jul 28 15:04:44 raspberrypi ModemManager[416]: <debug> [1595945084.971016] [modem0/ttyUSB2/at] operation failure: 100 (Unknown error)</div> <div><br> </div> <div>The attached debugs logs and lsusb output for the MS2372h-158 are from a test done on a RPI3 with a ModemManager build from git on master branch (reproduced with 1.10, 1.12 and 1.14 too).</div> <div><br> </div> <div>Have you an idea where the issue could come from?</div> <div><br> </div> <div>Thanks in advance for the help.</div> <div><br> </div> Regards,<br> </div> <div id="Signature"> <div> <div id="divtagdefaultwrapper" dir="ltr" style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0);"> <p style="margin-top: 0px; margin-bottom: 0px;"><span id="ms-rterangepaste-start"></span></p> <table style="color: rgb(35, 0, 102); font-family: Verdana, Arial; font-size: 12px; line-height: 18px;"> <tbody> <tr> <td colspan="2" style="padding-bottom:12px"><b style="font-size:14px">Louis-Alexis Eyraud</b><br> Embedded software engineer</td> </tr> <tr> <td valign="top"><a href="http://www.sigfox.com" target="_blank" style="text-decoration:none; outline:none"><img width="94" height="30" style="border:0px; margin:4px 10px 0px 0px" src="http://www.sigfox.com/static/media/signature_sigfox_logo_nov16.png"></a></td> <td valign="top" style="padding-left:10px">Bātiment E-volution - 425, rue Jean Rostand <br> 31670 Labčge, France <br> <a href="mailto:louis-alexis.eyraud@sigfox.com" style="color: rgb(35, 0, 102);">louis-alexis.eyraud@sigfox.com</a><br> <a href="http://www.sigfox.com" target="_blank" style="color: rgb(128, 36, 255); 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