I already tried to use the GPS of my Ericsson F5521gw in my Lenovo L520 a couple of month ago with Ubuntu 12.04 (precise), however it didn’t work out of the box. As the release of 14.04 (trusty) was close, I decided to wait.<\/p>\n
However it didn’t work with trusty either. Therefore I decided to dig into the problem. I came up with the following dirty workaround:<\/p>\n
First run<\/p>\n
$ sudo apt-get install gpsd gpsd-clients wvdial<\/p>\n
Edit the \/etc\/wvdial.conf to look like this:<\/p>\n
[Dialer Defaults]
\nNew PPPD = yes
\nStupid Mode = 1
\nModem Type = USB Modem<\/p>\n
[Dialer gps]
\nModem = \/dev\/ttyACM2
\nInit1 = AT*E2GPSCTL=1,5,1
\nInit2 = AT*E2GPSNPD<\/p>\n
Now we can begin to start gpsd. First establish a connection to your mobile provider with the network manager (upper right corner in Unity).<\/p>\n
Then create a pipe somewhere and use wvdial to setup the GPS:<\/p>\n
$ mkfifo \/root\/gps_pipe<\/p>\n
$ wvdial gps<\/p>\n
The GPS should now transmit data on \/dev\/ttyACM2. You can have a look at it with “$ cat \/dev\/ttyACM2”. Stuff the output into the pipe and start gpsd in read only mode:<\/p>\n
$ cat \/dev\/ttyACM2 > \/root\/gps_pipe<\/p>\n
$ gpsd -n -N -D4 -b \/root\/gps_pipe<\/p>\n
If cat stops, just restart cat. If gpsd throws an error, restart it as well. It should work after a couple of attempts. If there is any better solution, you’re welcome to contact me.<\/p>\n
[Update] Fix for the cat error: run gpsd with a user that has no write rights on the pipe. I created a pipe in tmp as root<\/p>\n
$ mkfifo \/tmp\/gps_pipe<\/p>\n
The pipe should have only read rights for others. Then I can execute gpsd as a normal user and cat does not stop:<\/p>\n
$ gpsd -n -N -D4 -b \/root\/gps_pipe<\/p>\n
I used the following ressources:<\/p>\n
[1] http:\/\/www.thinkwiki.org\/wiki\/Ericsson_F3507g_Mobile_Broadband_Module<\/a><\/p>\n [2] http:\/\/forum.ubuntuusers.de\/topic\/gps-mit-ericsson-mbm-f3705g-einrichten\/<\/a><\/p>\n [3] http:\/\/sourceforge.net\/apps\/mediawiki\/mbm\/index.php?title=MBM#GPS_Control_.28mbm-gpsd.29<\/a><\/p>\n [4] http:\/\/www.tjansson.dk\/2009\/01\/using-the-builtin-gps-in-a-thinkpad-x200-under-linux\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" I already tried to use the GPS of my Ericsson F5521gw in my Lenovo L520 a couple of month ago with Ubuntu 12.04 (precise), however it didn’t work out of the box. As the release of 14.04 (trusty) was close, … Continue reading