Two months i experience crashing STS (3.7.3.RELEASE) on ubutnu 14.04.
Before posting this, i made following steps:
This looks like a bug to me that we might be able to fix. There an action in tc server integration plugin that requires java.awt.Desktop to navigate to URL. Judging from your stack trace java.awt.Desktop seem to be problematic on Ubuntu. Perhaps we can rework the navigation to URL using Eclipse's utilities to navigate to URL. Please raise an issue here: https://issuetracker.springsource.com/browse/STS SERVER component, put a link to your stack trace and we'll try to fix this.