Voila le résultat de la commande de Ylag:
saby@saby-HP-Pavilion-dv7-Notebook-PC:~$ apt list | grep "installé, local"
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
gir1.2-nm-1.0/now 1.10.14-0ubuntu2 amd64 [installé, local]
libdvdcss2/now 1.3.0-dmo1 i386 [installé, local]
libnm-glib-vpn1/now 1.10.14-0ubuntu2 amd64 [installé, local]
libnm-glib4/now 1.10.14-0ubuntu2 amd64 [installé, local]
libnm-util2/now 1.10.14-0ubuntu2 amd64 [installé, local]
libnm0/now 1.10.14-0ubuntu2 amd64 [installé, local]
libpulse-mainloop-glib0/now 1:11.1-1ubuntu7.5 amd64 [installé, local]
libpulse0/now 1:11.1-1ubuntu7.5 amd64 [installé, local]
libpulsedsp/now 1:11.1-1ubuntu7.5 amd64 [installé, local]
linux-headers-3.19.0-46/now 3.19.0-46.52~14.04.1 all [installé, local]
linux-headers-3.19.0-46-generic/now 3.19.0-46.52~14.04.1 amd64 [installé, local]
linux-image-3.19.0-46-generic/now 3.19.0-46.52~14.04.1 amd64 [installé, local]
linux-image-extra-3.19.0-46-generic/now 3.19.0-46.52~14.04.1 amd64 [installé, local]
network-manager/now 1.10.14-0ubuntu2 amd64 [installé, local]
network-manager-config-connectivity-ubuntu/now 1.10.14-0ubuntu2 all [installé, local]
pulseaudio/now 1:11.1-1ubuntu7.5 amd64 [installé, local]
pulseaudio-module-bluetooth/now 1:11.1-1ubuntu7.5 amd64 [installé, local]
pulseaudio-utils/now 1:11.1-1ubuntu7.5 amd64 [installé, local]