Hello Barbaros, Have you checked if this hardware is functioning without issues? It might be worth installing Linux to see if you can establish a GSM connection there.
Additionally, disabling umsm in the kernel could be another potential solution. I think it’s worth a try. Here’s what you’ll need to do: config -e -f /bsd disable umsm quit reboot I hope this works for you. On Mon, Oct 28, 2024 at 3:33 AM Barbaros Bilek <barbarosb...@gmail.com> wrote: > Hi misc, > > I'm encountering an issue with a Quectel EM120R-GL LTE module with dual > SIM slots on OpenBSD. The system (ifconfig umb0) consistently displays the > error "SIM not inserted, PIN required," despite attempts to set the APN, > reboot, and bring the interface up. I’m 100% certain that the PIN is > disabled. > > Here are some key command outputs and troubleshooting steps: (// are my > comments) > > - AT+QSIMSTAT? → +QSIMSTAT: 0,0 // (SIM not detected) > - AT+CPIN? → +CME ERROR: 10 // (SIM not ready) > - AT+CIMI → +CME ERROR: // 3 (operation not allowed) > - AT+QSIMDET=1,1 → OK // (SIM detection enabled) > - AT+QSIMSEL=1 or AT+QSIMSEL=2 → ERROR // (cannot switch SIM slot) > > I also tried the following configurations with reboots after each change, > but neither resolved the issue: > > - AT+QSIMDET=0,0 followed by reboot > - AT+QSIMDET=1,0 followed by reboot > - The AT+QSIMDET=0,0 command disables SIM detection for both slots, > meaning the module will not check for the presence of a SIM card in either > slot. Conversely, the AT+QSIMDET=1,0 command enables detection for the > first SIM slot while disabling it for the second, allowing the module to > check only the first slot for a SIM card. Neither configuration, however, > successfully resolves the issue. > > In each case, AT+QSIMSTAT? consistently returns +QSIMSTAT: 0,0; showing > that the SIM is not detected. It appears that OpenBSD cannot detect or > manage SIM slots in this MBIM mode, and the umb driver might not fully > support dual-SIM functionality in this context. > > Has anyone else encountered a similar issue or found a workaround for > managing dual-SIM LTE modules on OpenBSD? > Thanks in advance for any insights! > > P.S. Some useful command outputs: > openbsd76# usbdevs -a 3 -vv > addr 03: 2c7c:0620 Quectel, EM120R-GL > super speed, power 224 mA, config 1, rev 4.09, iSerial > e40fc2ef > driver: umsm0 > driver: umsm1 > driver: umsm2 > driver: umsm3 > > It would be beneficial to add the Quectel EM120R-GL to the man umb(4) > page. Especially if we can resolve this dual SIM issue. I’m also prepared > to provide any additional outputs you need and to perform further actions > as required. > > Also dmesg is attached via this email. > Thanks in advance. > > -- > Barbaros > >
