Once again I solved it, this time connecting a mouse. I'm not sure of understanding why it needs to be connected to work but it's probably related to this two bugs (I found the workaround there).
https://bugs.launchpad.net/ubuntu/+source/libxtst/+bug/337926 https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/321444 There is a patch also. It's not exactly "solved" but for me is good enough. Thanks for your time, if you need some other information just tell me. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

