<div style="font-family: Arial; font-size: 14px;">I wanted to provide an additional piece of information I realized:<br><br><br>When trying to set the initiali EPS bearer settings I get the following error from mmcli:<br><br><span>'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Unsupported: Operation not supported'</span><br><br>and I also noticed that mmcli reports the following in 3gpp eps :<br></div><div style="font-family: Arial; font-size: 14px;"><span>ue mode of operation: csps-2</span><br><br>Im assuming this has something to do with my issue? Previously I had no problem with ModemManager 1.18 setting up the EPS bearer settings.<br><br>Thanks again<br><br></div>
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On Thursday, November 24th, 2022 at 9:26 AM, VT102 <VT102@protonmail.com> wrote:<br><br>
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<div style="font-family: Arial; font-size: 14px;">Hello all,<br><br>I am working with an mPCI Telit LE910C4 modem connected to a Linux System on a Chip running Ubunut 20.04. <br><br>With 1.18 ModemManager installed I noticed that serial ports were being listed as ignored except for a GPS port was available through a tty, this meant I couldnt issue AT commands. I also needed bit error rate from the mmlib-glib API so I decided to build ModemManager 1,21.<br><br>Upon upgrading the modem no longer recognizes as a qmi device, but the AT command tty terminals are available. I was hoping for some advice on how to investigate this behavior. I did not build libqmi from source because whenever I try to compile on the device compilation freezes (overnight) on compiling certain *.o files. However, I am able to get the modem connected. <br><br>Any advice on how to debug why the modem is no longer being recognized as a qmi device?<br>I am wondering if I need to change the USB configuration of the modem,but this seems likee it would be strange, as it was interacting with the modem via qmi previously via cdc_wdm0.<br><br>Below I will post output from mmcli from version 1.21 with QMI not working. <br><br><br>Thanks,</div><div style="font-family: Arial; font-size: 14px;">Rick<br><br><span> --------------------------------</span><div><span> General | path: /org/freedesktop/ModemManager1/Modem/0</span></div><div><span> | device id: <br></span></div><div><span> --------------------------------</span></div><div><span> Hardware | manufacturer: Telit</span></div><div><span> | model: LE910C4-NF</span></div><div><span> | firmware revision: 25.21.660-P0F.661806</span></div><div><span> | supported: gsm-umts, lte</span></div><div><span> | current: gsm-umts, lte</span></div><div><span> | equipment id: <br></span></div><div><span> --------------------------------</span></div><div><span> System | device: /sys/devices/platform/soc@0/32c00000.bus/32e50000.usb/ci_hdrc.1/usb1/1-1/1-1.2</span></div><div><span> | drivers: option, qmi_wwan</span></div><div><span> | plugin: telit</span></div><div><span> | primary port: ttyUSB2</span></div><div><span> | ports: ttyUSB0 (ignored), ttyUSB1 (gps), ttyUSB2 (at),</span></div><div><span> | ttyUSB3 (at), ttyUSB4 (ignored), wwan0 (ignored)</span></div><div><span> --------------------------------</span></div><div><span> Status | unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (10), sim-puk2 (10)</span></div><div><span> | state: connected</span></div><div><span> | power state: on</span></div><div><span> | access tech: lte</span></div><div><span> | signal quality: 85% (recent)</span></div><div><span> --------------------------------</span></div><div><span> Modes | supported: allowed: 2g; preferred: none</span></div><div><span> | allowed: 3g; preferred: none</span></div><div><span> | allowed: 2g, 3g; preferred: none</span></div><div><span> | allowed: 4g; preferred: none</span></div><div><span> | allowed: 2g, 4g; preferred: none</span></div><div><span> | allowed: 3g, 4g; preferred: none</span></div><div><span> | allowed: 2g, 3g, 4g; preferred: none</span></div><div><span> | current: allowed: 3g, 4g; preferred: none</span></div><div><span> --------------------------------</span></div><div><span> IP | supported: ipv4, ipv6, ipv4v6</span></div><div><span> --------------------------------</span></div><div><span> 3GPP | imei: <br></span></div><div><span> | operator id: 310410</span></div><div><span> | operator name: AT&T</span></div><div><span> | registration: roaming</span></div><div><span> | packet service state: attached</span></div><div><span> --------------------------------</span></div><div><span> 3GPP EPS | ue mode of operation: csps-2</span></div><div><span> --------------------------------</span></div><div><span> SIM | primary sim path: /org/freedesktop/ModemManager1/SIM/0</span></div><div><span> --------------------------------</span></div><span> Bearer | paths: /org/freedesktop/ModemManager1/Bearer/0</span><br><br></div><div style="font-family: Arial; font-size: 14px;"><br></div>
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