<div dir="auto"><div>Sorry for the off topic reply. Got it mixed up with another issue. <div dir="auto">But to further the response from the previous person, my wda error occurs well after the modem is powered up. I guess a step in a script on the start up causing it, could be to state if error occurs sleep 5s and try again. </div><div dir="auto">My MC7455 has a sleep time of 8s from boot to give enough time for modem to boot and run startup checks. This script is in my startup dir: /etc/rc.local. running Raspbian Buster.</div><br><br><div class="gmail_quote"><div dir="ltr">On Mon, Mar 30, 2020, 10:08 AM Brandon Lee <<a href="mailto:blee0518@gmail.com">blee0518@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>Doing some research, getting referred a link that didnt help, and a some rest landed me to think of using a different format. I will try this later today. <div dir="auto">Previous format i tried:</div><div dir="auto"><span style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px"># assign module1 to cdc-wdm0</span><br style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px"><span style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px">KERNEL=="cdc-wdm0", \</span><br style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px"><span style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px">ATTR{idProduct}=="9071", \</span><br style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px"><span style="color:rgb(42,46,46);font-family:"helvetica neue",arial,sans-serif;font-size:15px">SYMLINK+="cdc-wdm0"</span></div><div dir="auto"><br></div>Looking to try:</div><div dir="auto">KERNEL=="cdc-wdm*", KERNELS=="1-4:1.0", SYMLINK+="cdc-wdm"<br></div><div dir="auto"><br></div><div dir="auto">What i was reading from had this:</div><div dir="auto"><span style="font-family:sans-serif">KERNEL=="ttyACM*", KERNELS=="1-4:1.0", SYMLINK+="sensor_0"</span><br></div><div dir="auto"><p style="color:rgba(34,34,34,0.8);font-family:lato,calibri,arial,sans-serif;font-size:16px">I am not sure if mine will work as this read also said KERNEL will be tty*** every time bc thats how its seen. Im not sure but if it works it will be assigning the physical port to cdc-wdm*</p><p style="color:rgba(34,34,34,0.8);font-family:lato,calibri,arial,sans-serif;font-size:16px"><br></p><br><div class="gmail_quote" dir="auto"><div dir="ltr">On Mon, Mar 30, 2020, 2:58 AM Tor Rune Skoglund <<a href="mailto:trs@fourc.eu" target="_blank" rel="noreferrer">trs@fourc.eu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>This seems to be quite similar to our issue with Sierra Wireless
MC7304. <br>
</p>
See my post yesterday: <a href="https://lists.freedesktop.org/archives/libqmi-devel/2020-March/003252.html" rel="noreferrer noreferrer" target="_blank">https://lists.freedesktop.org/archives/libqmi-devel/2020-March/003252.html</a><br>
<p>I have no "proper" fix, but really interested in finding one. Our
very temporary fix was to keep resetting the USB port to make the
modem also reset until we by pure luck gets it to work.</p>
<div><span style="color:black">
<p>Best regards,<br>
<br>
Tor Rune Skoglund</p>
</span></div>
<div>Den 30.03.2020 07:40, skrev Brandon
Lee:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div>I am having issues with EM7455.</div>
<div>I used `.rules` to make sure device ATTRs use qmi_wwan
driver</div>
<div>it shows in `lsusb -t` that modem is using these drivers.</div>
<div>Running latest firmware update for ATT, and have tried
GENERIC</div>
<div><br>
</div>
<div>When running `qmi-network /dev/cdc-wdmX start` I get :</div>
<div>```Checking data format with 'qmicli -d /dev/cdc-wdm2
--wda-get-data-format '...</div>
<div>error: couldn't create client for the 'wda' service: CID
allocation failed ine CTL client: Transaction timed out</div>
<div>Device link layer protocol not retrieved: WDA unsupported</div>
<div>Starting network with 'qmicli -d /dev/cdc-wdm2
--wds-start-network=apn='broadd' --client-no-release-cid
'...</div>
<div>error: couldn't create client for the 'wds' service: CID
allocation failed ine CTL client: Transaction timed out</div>
<div>error: network start failed, client not allocated</div>
<div>```</div>
<div><br>
</div>
<div><br>
</div>
<div>When I try to run Start-network manually, i get this
response:</div>
<div>```</div>
<div>error: couldn't create client for the 'wds' service: CID
allocation failed ine CTL client: Transaction timed out</div>
<div>```</div>
<div><br>
</div>
<div>If I remove the .rules file from running giving the port
mbim_wwan, I have been able to run `mbim-network
/dev/cdc-wdmX start` and get a network start successfully,
but I am not able to get an IP address. </div>
<div>`ifconfig` shows the interface up but does not give it an
IP address. </div>
<div><br>
</div>
<div>This modem would be the second modem I am running on my
Debian device, the primary(working) one now is MC7455 with
qmi and raw-ip. I am able to get DHCP address with this
modem fine.</div>
<div><br>
</div>
<div>I have read that you need to get DHCP address from
another source, i am using systemd-networkd retrieve an IP,
just as I do with my MC7455. </div>
<div>Can you help with fixing in either way?</div>
</div>
</div>
<br>
<fieldset></fieldset>
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</blockquote>
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</blockquote></div></div></div>
</blockquote></div></div></div>