<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body> <div name="messageBodySection"> <div>Excellent. Thanks for following up!</div> </div> <div name="messageSignatureSection"><br /> Dan</div> <div name="messageReplySection">On Mar 10, 2025 at 7:16 AM -0500, Lech Perczak <lech.perczak@camlingroup.com>, wrote:<br /> <blockquote type="cite"> <p>Hello Aleksander, Dan<br /> <br /> It works perfect now again, thanks!<br /> I'm sorry that I totally forgot about this thread - but still letting you know.<br /></p> <p>With kind regards,<br /> Lech<br /></p> <div class="moz-cite-prefix">W dniu 22.12.2024 o 19:13, Aleksander Morgado pisze:<br /></div> <blockquote type="cite" cite="mid:CAA3JqEeWATn2MgAtqnUs1MgVD6bXpcJHMJb-W32LhxsUxU0KjQ@mail.gmail.com"> <div dir="ltr"> <div dir="ltr">Hey,<br /></div> <br /> <div class="gmail_quote gmail_quote_container"> <div dir="ltr" class="gmail_attr">On Sun, Dec 22, 2024 at 6:49 PM Aleksander Morgado <<a href="mailto:aleksander.morgado@gmail.com" moz-do-not-send="true" class="moz-txt-link-freetext">aleksander.morgado@gmail.com</a>> wrote:<br /></div> <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div dir="ltr"> <div dir="ltr"><br /></div> <br /> <div class="gmail_quote"> <div dir="ltr" class="gmail_attr">On Sun, Dec 22, 2024 at 6:37 PM Aleksander Morgado <<a href="mailto:aleksander.morgado@gmail.com" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">aleksander.morgado@gmail.com</a>> wrote:<br /></div> <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div dir="ltr"> <div dir="ltr">Hey,<br /></div> <div class="gmail_quote"> <div> </div> <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> > After updating to the latest main (at eda130f3bf1c), in our team<br /> > > we've noticed, that in our CI, that QMI port sometimes fails to<br /> > > probe,<br /> > > with Telit LE910C4-WWXD. The result is the modem having only AT<br /> > > ports<br /> > > available, thus falling back to using PPP for the data connection.<br /> ><br /> > Well that's not awesome; I'll dig into it. If you figure out anything<br /> > too, let me know.<br /> ><br /> <br /> When this happens, does MM attempt to probe the port as AT before<br /> trying QMI?<br /> <br /></blockquote> <div><br /></div> <div>With the changes in that referenced commit, it looks like serial_probe_step() may be running serial_open_at() also for the QMI and MBIM ports, which is not right, as that would create a new MMSerialPort in ctx->serial.</div> <div><br /></div> <div>The serial_probe_step() (ideally renamed as probe_step() to make it clearer that it is not serial-specific) should not run any serial-specific operation (e.g. CUSTOM_INIT, AT_OPEN_PORT, ....) for ports that do not require any AT or QCDM probing.<br /></div> <div><br /></div> <div>WDYT?<br /></div> </div> </div> </blockquote> <div><br /></div> <div>The issue can be reproduced with modems for which the corresponding plugin has "custom_init" configured, e.g. Telit or Cinterion:</div> <div><br /></div> <div>ModemManager[4112]: <dbg> [1734889629.161510] [cdc-wdm0/probe] no AT/QCDM/QMI probing in possible MBIM port<br /> ModemManager[4112]: <dbg> [1734889629.162057] [cdc-wdm0/probe] port is not AT-capable<br /> ModemManager[4112]: <dbg> [1734889629.162867] [cdc-wdm0/probe] port is not QCDM-capable<br /> ModemManager[4112]: <dbg> [1734889629.163621] [cdc-wdm0/probe] port is not QMI-capable<br /> ModemManager[4112]: <dbg> [1734889629.164981] [cdc-wdm0/probe] launching port probing: 'mbim'<br /> ModemManager[4112]: <msg> [1734889629.166516] [cdc-wdm0/probe] probe step: start<br /> ModemManager[4112]: <msg> [1734889629.166988] [cdc-wdm0/probe] probe step: custom init open port<br /></div> </div> </div> </blockquote> <div><br /></div> <div>I tried to fix this with <a href="https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/1273" moz-do-not-send="true">https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/1273</a><br /></div> <div><br /></div> <div>Let us know if this solves the problem completely or not.<br /></div> </div> </div> <p class="MsoNormal" style="’line-height:12.0pt;font-size:10.0pt;color:#9C6500">___</p> <p class="MsoNormal" style="’line-height:12.0pt;font-size:10.0pt;color:#9C6500">This email originated from outside of Camlin Group. Do not click on links or open attachments unless you are confident they are secure. If in doubt, please raise a security incident via the following portal: <a href="https://camlin-helpdesk.atlassian.net/servicedesk/customer/portal/2/group/34/create/62" moz-do-not-send="true">Camlin Helpdesk – Report an Information Security Incident/Non-Conformance</a></p> </blockquote> <pre class="moz-signature" cols="0">-- Pozdrawiam/With kind regards, Lech Perczak Sr. Software Engineer Camlin Technologies Poland Limited Sp. z o.o. Strzegomska 54, 53-611 Wroclaw Tel: (+48) 71 75 000 16 Email: <a class="moz-txt-link-abbreviated" href="mailto:lech.perczak@camlingroup.com">lech.perczak@camlingroup.com</a> Website: <a class="moz-txt-link-freetext" href="http://www.camlingroup.com">http://www.camlingroup.com</a></pre></blockquote> </div> </body> </html>