ok obrigado! Já tenho o sistema updated. Continuo é com o problema de não me conseguir ligar wifi (algo que usava normalmente)
joao@xxxxxxx:~$ sudo apt-get dist-upgrade
[sudo] password for joao:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
joao@joao-ThinkPad-T410:~$