Eu fiz o upgrade para 18.04 (na verdade, ele disse upgrade parcial) e agora não tenho som, tentei instalar o pulseaudio, pois parece que está faltando, mas eu estou com a mensagem abaixo.
dave@Dave-PC:~$ sudo apt install pulseaudio [sudo] password for dave: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies. pulseaudio : Depends: libpulse0 (= 1:10.0-2ubuntu3.1) but 1:11.1-1ubuntu7 is to be installed E: Unable to correct problems, you have held broken packages. dave@Dave-PC:~$
Como corrijo isso?
O erro fala sozinho, a dependência / biblioteca ausente é a libpulse que pode ser encontrada no pacote libpulse-dev.
Primeiro, limpe-o por (para que a instalação obsoleta seja excluída):
sudo apt purge libpulse-dev
E, em seguida, instale-o:
sudo apt install libpulse-dev
E tente instalar o pulseaudio.