Maybe you need to enable modem? This is n900 init sequence from script: nokia-n900-configs.sh
# set up the GPIO's for N900 modem:
echo 70 >/sys/class/gpio/export
echo low >/sys/class/gpio/gpio70/direction
echo 0 >/sys/class/gpio/gpio70/value
echo 73 >/sys/class/gpio/export
echo high >/sys/class/gpio/gpio73/direction
echo 0 >/sys/class/gpio/gpio73/value
echo 74 >/sys/class/gpio/export
echo low >/sys/class/gpio/gpio74/direction
echo 75 >/sys/class/gpio/export
echo low >/sys/class/gpio/gpio75/direction
echo 157 >/sys/class/gpio/export
echo low >/sys/class/gpio/gpio157/direction
echo 0 >/sys/class/gpio/gpio157/value
# create symlinks for ofono N900 plugin
mkdir -p /dev/cmt
ln -nsf /sys/class/gpio/gpio70 /dev/cmt/cmt_apeslpx
ln -nsf /sys/class/gpio/gpio74 /dev/cmt/cmt_en
ln -nsf /sys/class/gpio/gpio73 /dev/cmt/cmt_rst_rq
ln -nsf /sys/class/gpio/gpio75 /dev/cmt/cmt_rst
ln -nsf /sys/class/gpio/gpio157 /dev/cmt/cmt_bsi
--
Pali Rohár
pali.ro...@gmail.com
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