I need to acces my garmin 305 to use Viking or Gpsman. I can't access the gps, :cannot open device.

dmesg:
usbcore: registered new interface driver usbhid
usbhid: v2.6:USB HID core driver
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial Driver core
USB Serial support registered for Garmin GPS usb/tty
garmin_gps 2-1:1.0: Garmin GPS usb/tty converter detected
usb 2-1: Garmin GPS usb/tty converter now attached to ttyUSB0
usbcore: registered new interface driver garmin_gps
garmin_gps: v0.33:garmin gps driver
any ideas?

I've found My Tourbook which works really well with my garmin forerunner 305, just run it as root.

Are you plugging this into a usb hub Somewhere? Try a different usb socket,if you have one

Which 305 do you own? Forerunner or Edge?

Check the permissions for /dev/ttyUSB0. I would say that neither application has access to the serial port.

Two replies in one from work win7.

It's a Forerunner 305. (btw, the Garmin map puts me running in the water instead of along the shore road at Lausanne!Error +/- 5~10m)I'll import other maps one day.

I'll try changing usb port instead of using same hub.

I'll look at permisions later on as well.

Thannks.

I changed permisions with,
[root@localhost dev]# chmod 777 /dev/ttyUSB0
Viking could get data from the gps, although I don't know how to use it yet!
Then I did a,
[root@localhost dev]# ls -l /dev/ttyUSB0
and got,
crwxrwxrwx 1 root dialout 188, 0 2010-11-03 20:05 /dev/ttyUSB0

Very strange, the permisions had reverted to their former state and needless to say no more access to the gps.
???