I am trying to bring up EM9191 on Linux kernal 4.14 and the module is struck in Low Power Mode. I had gone through the forums, but most of the solutions doest work as the current module is locked. I also tested the module in ubuntu with kernal 4.15, here the modem works fine. In the EM9191 spec, its mentioned that pin 8 is meant for w_diable and it can be set using the host - I had searched but didn’t get solution. I am using the qcserial driver, that’s discussed for committing into Linux main branch https://firstname.lastname@example.org/T/
Following are the logs
mbimcli -d /dev/cdc-wdm0 --query-radio-state
[/dev/cdc-wdm0] Radio state retrieved:
Hardware radio state: ‘on’
Software radio state: ‘off’
My apologies for the delayed response. I think the above at-cmds don’t work as the modem is password protected. Following are their outputs
I was also comparing the entries under the path “/sys/bus/usb/devices/” in Ubuntu and the target os(4.14 kernel-based). I see that the power option is missing in the target os. Could this be the issue ? I also tried swapping the modules and the same issue is seen.