Notes

Resetting the modem

After a few days, the 3g modem gets into a useless state 😭

Things we're trying, as of v1.3

• echo 0 > /sys/devices/platform/soc/20980000.usb/buspower - puts modem into a 'struggling' pulsing state…

Things we've tried, that didn't help

• echo 1-1 > /sys/bus/usb/drivers/usb/unbind [link]
• shutdown -r now

Things to try

• udevadm trigger --subsystem-match=usb [link] - doesn't seem to do anything
• hub-ctrl -h 0 -p 0 [link] - seems to do the same thing as buspower
• echo 0 > /sys/bus/usb/devices/1-1/authorized [link] - seems to do the same thing as unbind
• usbreset /dev/bus/usb/001/001 [link]
• echo 0 > /sys/devices/platform/soc/20980000.usb/bussuspend [link]
• UMTSkeeper
• GPIO power via custom cable