<div dir="ltr"><div>Hi teams,</div><div><br></div><div>    I want use <b>"mmcli --report-kernel-event

" </b>to access the modem, but the error occur as follow: </div><div><br></div>root@NVTEVM:~$ mmcli --report-kernel-event="action=add,subsystem=tty,name=ttyUSB<br>0"<br>ModemManager[601]: <debug> [1621557548.457821] [base-manager] kernel event reported:<br>ModemManager[601]: <debug> [1621557548.457821] [base-manager] kernel event reported:<br>ModemManager[601]: <debug> [1621557548.458234] [base-manager]   action:    add<br>ModemManager[601]: <debug> [1621557548.458234] [base-manager]   action:    add<br>ModemManager[601]: <debug> [1621557548.458467] [base-manager]   subsystem: tty<br>ModemManager[601]: <debug> [1621557548.458467] [base-manager]   subsystem: tty<br>ModemManager[601]: <debug> [1621557548.458790] [base-manager]   name:      ttyUSB0<br>ModemManager[601]: <debug> [1621557548.458790] [base-manager]   name:      ttyUSB0<br>ModemManager[601]: <debug> [1621557548.459218] [base-manager]   uid:       n/a<br>ModemManager[601]: <debug> [1621557548.459218] [base-manager]   uid:       n/a<br><b>ModemManager[601]: <warn>  [1621557548.499209] [base-manager] couldn't handle kernel event: No rule files found in '/lib/udev/rules.d'<br>ModemManager[601]: <warn>  [1621557548.499209] [base-manager] couldn't handle kernel event: No rule files found in '/lib/udev/rules.d'<br>error: couldn't report kernel event: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Failed: No rule files found in '/lib/udev/rules.d''</b><br><div><br></div><div>Is it necessary to install the udev library ?</div></div>