As other people before I am unable to remote debug with xdebug. Afaict xdebug is set up correctly; however, PS does tell me the remote_host may have to be set to 127.0.0.1. Since I debugging remotely, I have set it to the IP of the machine that PS is running on. PS then tells me it is 'connected' and has opened a tab in my browser.
However, it does not break on any break point. If I tell it to break on first line it does just that, but this makes debugging very difficult.
After reading the other issues here, I went through my settings again and again to make sure I use the correct path mappings, ports, paths and whatnot. Still there is no breaking on the points.
As per suggestions I have attached idea.log; also a bunch of screenshots that hopefully illustrate the settings I have made. I am very willing to follow further suggestions and provide information :)
Here are the screenshots: http://imgur.com/a/1dR3g/phpstom_debugging
The remote host from the screenshots is actually a virtual machine on my laptop. I create symlinks to the current "document root" so I won't have to reload apache all the time. This symlink is set on the host, the whole directory, however, is shared with the virtual machine.
On a side note: I experience the same behavior with PS 1.0.2