How to Stop Geoclue on Ubuntu Linux (without losing the clock)

For some reason in Ubuntu 12.04 (and possibly 12.10), the tray clock package (indicator-datetime) for unity has geoclue as a dependency. In other words, if you want to ditch geoclue, you lose your clock.

Here's a workaround:

1. Add the following to your /etc/hosts file (sudo gedit /etc/hosts):

127.0.0.1       geoname-lookup.ubuntu.com
127.0.0.1       videosearch.ubuntu.com
127.0.0.1       daisy.ubuntu.com
127.0.0.1       one.ubuntu.com
127.0.0.1       musicsearch.ubuntu.com

2. Change the permissions of the geoclue libs to prevent it from executing:

sudo chmod ugo-x /usr/lib/geoclue/geoclue-master

3. Restart. No more pesky connections to Canonical servers.

PS3 Media Server - Firewall Setup for Ubuntu 12.04 / Linux

If you've installed PS3 Media Server in Ubuntu, and you're getting the message "No Renderers were Found" and a great big red "X" on the Status tab, give this a try. The most likely issue is your firewall is blocking your server from establishing a connection with your media playback device (e.g. your Playstation 3).

Steps:

1. Open a terminal (Ctrl-Alt-T)

2. Type the following command:

sudo ufw allow from <your_device's_ip> to any port 5001

This assumes you are using the default PS3 Media Server port of 5001. For example, if your PS3 uses the static IP 192.168.0.100, then do:

sudo ufw allow from 192.168.0.100 to any port 5001

If you aren't using static IPs on your devices but wish to open the server to any device connected to your router/subnet, you can specific a subnet mask, e.g. 192.168.0.1/24. If you're not using Ubuntu but are using iptables with your preferred linux distro, simply add an exception for port 5001, e.g.:

sudo iptables -A INPUT -s <your-device's-ip> -p tcp --dport 5001 -j ACCEPT

sudo iptables -A INPUT -s <your-device's-ip> -p udp  --dport 5001 -j ACCEPT

This ought to do the trick.