Joshua Layne <joshua at willowisp.net> writes: > > But the power thing was irritating. The modem has two USB connections > > and one is only for power. So I connected an USB-battery that can give > > 700 mA to the power connection and still the N810 said that there was > > not enough power and failed to start things properly. I wonder if this > > just is a problem with power requirement detection. Can you disable > > this detection? I suspect that the modem does not see that it is > > connected to a battery and therefore reports that it needs a lot of > > power. > > > > > > > From the brief spec I read on wikipedia today (because until today I > had never heard of it), the second cord is only for power, but the first > is for data+power and does in fact need power, but shouldn't require > 500mW on the primary. > > This is all based on not much research, so I might be entirely wrong. > I found a work around. If I put the modem behind the hub it works with the battery connected to the modem and no power to the hub. I have to connect the hub first to the N810 and then connect the modem. The only remaining problem is that the N810 reboots when I disconnect the cable but maybe you just have to remove usbserial or something like that for that not to happen. To summarize how to get a mobile network connection with the Huawei E220 HSDPA using the USB cable to connect to your N810: 1. Put the N810 in USB host mode. 2. Connect the USB hub to the N810 using a female-female converter. 3. Connnect the Huawei modem with battery to the USB hub. 3. Connect to network DEFAULT that is created in the connection menu with: gconftool -s -t string /system/osso/connectivity/IAP/DEFAULT/type DUMMY 4. Run the following script: #!/bin/sh # usb host mode script # use gainroot to become root and relaunch itself if [ `id -u` != 0 ] ; then #if not already root, call itself as root sudo gainroot <<EOF $0 $* EOF exit fi kill -HUP `cat /var/run/ppp0.pid` insmod /root/usbserial.ko vendor=0x12d1 product=0x1003 sleep 3 /usr/sbin/pppd call telia3g -------- You have to disable the asking of the PIN code in your SIM card by connecting the card to a 3G phone or use some suitable software like umtsmon on your Linux computer ur use a Windows computer connected to the modem. You have to complie the kernel modules to get the usbserial.ko. The file /etc/ppp/peers/telia3g has the following content: lock connect "/usr/sbin/chat -v -f /etc/ppp/telia3g.chat" #Use the first of the serial ports. /dev/ttyUSB0 hide-password noauth debug novj 460800 #This options tells pppd to create automatically a default route for this connection #in the routing table upon connection. #This works if you do not have set (you must not indeed!) the 'gateway' option # for any network interface you have (eg eth0). defaultroute noipdefault user anyuser password anypassword modem crtscts #Do not use the peer given DNSs, since the ones received from the peer are wrong. usepeerdns nodeflate nobsdcomp The file /etc/ppp/telia3g.chat have the following content: ABORT BUSY ABORT ERROR REPORT CONNECT TIMEOUT 10 "" "AT&F" OK "AT+COPS?" OK "ATE1" OK "ATS0=0" OK 'AT+CGDCONT=1,"IP","online.telia.se"' OK "ATDT*99#" TIMEOUT 30 CONNECT \d\c -- /Tommy Persson
