no more sound Intel Corporation 82801JI (ICH10 Family)

After installation of ubntu16.10 the sound was working well. Yesterday there was only the sound of drums of ubuntu once it was ready to start but no more sound when I was connected. I tries to fix things installing pavucontrol and so on but I have no more sound at all. The microphone works: as I speak I can see the sound level changing.

Linux jacques-System-Product-Name 4.8.0-30-generic #32-Ubuntu SMP Fri Dec 2 03:43:27 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
jacques@jacques-System-Product-Name:~$ lspci | grep [Aa]udio && lsusb | grep [Aa]udio
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Redwood HDMI Audio [Radeon HD 5000 Series]