+- PINE64 (https://forum.pine64.org)
+-- Forum: PinePhone (https://forum.pine64.org/forumdisplay.php?fid=120)
+--- Forum: PinePhone Hardware (https://forum.pine64.org/forumdisplay.php?fid=122)
+--- Thread: Only enable modem when needed with kill switches (/showthread.php?tid=11538)
Only enable modem when needed with kill switches - sokolgeo - 09-19-2020
Hello!
For privacy reasons I want to keep modem disabled unless I want to make a call or use internet via the modem.
I was expecting operating system on pinephone to find the modem once its powered back by the hardware kill-swich on the back of the device.
Doesn't work: once the modem's hardware kill-switch is "off", the modem does not re-appear in pinephone operating system when the hardware kill-switch is returned to "on" position.
I tried with postmarketOS, ubuntu touch and pure os for pinephone (purism guy says on Librem phone the switches are not requiring re-boot for re-activating the hardware, at least not wifi: https://forums.puri.sm/t/librem-5-pinephone-kill-switches/8793/12 ). Neither was able to detect modem when its re-enabled by the hardware kill-switch.
Is there any way to bring pinephone modem back to operating mode without system reboot after I flip its hardware kill switch from "off" to "on" position?
Thank you
RE: Only enable modem when needed with kill switches - onkelfip - 09-19-2020
Hi,
on my Linux laptop (not a Pine product) the internal 4G modem sometimes 'disappears' after a suspend. I'm always able to enable it again and have it detected by modemmanager by resetting it using usb_modeswitch -R -v vendorid -p productid
Update: just checked on my PinePhone, the Quectell LTE Modem is on USB, id:2c7c:0125
as root, running:
usb_modeswitch -R -v 2c7c -p 0125
Did reset the modem.
Cheers,
Filip.
RE: Only enable modem when needed with kill switches - sokolgeo - 09-20-2020
Interesting.
I also see Quectell LTE Modem on USB Bus 003, device 002: ID 2c7c:0125 on my PinePhone.
Problem is: when modem is hardware killed with physical switch flipped "off" and then back "on" - the modem does not re-appear in lsusb output.
At this point running as root
usb_modeswitch -R -v 2c7c -p 0125
gives
Code:
Look for default devices ...
No devices in default mode found. Nothing to do. Bye!It seems that after being killed with hardware kill-switch host has to reset the bus to enable the re-enumeration of the device (source Replicant devs: https://www.mail-archive.com/replicant@osuosl.org/msg00700.html)
Is there way to reset USB Bus 003 to force enumeration of attached USB devices?