Sounds like you need to check your network configuration to get tethering to work properly. Does the connection show up in ifconfig?
It's possible tethering is disabled/crippled on the tablet by the manufacturer as it was on my Nexus 10, since a tablet doesn't have cellular internet and therefore doesn't need to provide tethering for a typical end-user.
In that case you can check out if the cyanogenmod distribution for your device enables it. If it doesn't, you can build the kernel from source and enable tethering yourself (http://forum.xda-developers.com/showthread.php?t=2047685).
If you get tethering working, you can also setup reverse tethering (http://forum.xda-developers.com/showthread.php?t=2287494). With reverse tethering, your tablet uses the PC as the host, which makes more sense for most use cases with ROS. Automating this to be on connect would involve running some adb shell commands in a script on the pc, triggered by udev.
If you find tethering STILL doesn't work, you can try to get something working with the adb ppp command (http://stackoverflow.com/questions/4565100/how-to-use-adb-ppp), though I found this to be really temperamental and not supported on many devices.
Originally posted by paulbovbel with karma: 4518 on 2014-11-04
This answer was ACCEPTED on the original site
Post score: 2
Original comments
Comment by hiro64 on 2014-11-06:
The connection does show up in ifconfig. I should try your other suggestions, thank you.
Comment by paulbovbel on 2014-11-06:
What's your full network setup. Are the two connected to each other in isolation (i.e. the computer is not connected to any other device)?
Comment by hiro64 on 2014-11-06:
Yes. When I try to tether the tablet with the laptop (Ubuntu), it appears as a Wired Connection. Then I disconnect from the other connections and connect only with this Wired Connection.
Comment by paulbovbel on 2014-11-06:
So, if it shows up in ifconfig, the network connection exists. Your problem probably lies in network setup. If you're tethering, the tablet acts as a dhcp host and assigns an IP address to your pc. Make sure you can ping the pc from the tablet shell and vice versa.
Comment by paulbovbel on 2014-11-06:
If you setup reverse tethering, the guide shows you how to do it with static ips, however you could also setup your laptop to act as a dhcp host.
Comment by hiro64 on 2014-11-11:
So, reverse tethering only worked when the notebook was connected to the internet. Otherwise, the topics simply don't appear to the master, even though the ROS android app does connect normally.
Comment by paulbovbel on 2014-11-11:
i would guess that that's due to something in your network config. I did this on a headless install of ubuntu (so no network manager), and bridged the pc's usb and wifi network interface, letting a router act as the dhcp host, so I didn't exactly follow the guide i linked on the PC side.
