Ubuntu – Ubuntu 12.04

I have weired issue. I did a fresh installation of Ubuntu 12.04. Then I installed Nvidia drives for my graphics card. I executed the command « modprobe nvidia » after installing the Nvidia drivers and rebooted. After reboot, sound indicator in top panel is disabled and I can’t control the volume from there. I opened Settings > Sound and it does not show any sound card installed. However, I can hear the sound. Please help.

Sortie de lspci | grep Audio

 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
01:00.1 Audio device: NVIDIA Corporation GF110 High Definition Audio Controller (rev a1)
 

Sortie de lsmod | grep snd

 snd_hda_codec_hdmi     32191  4
snd_hda_codec_realtek 73851 1
snd_hda_intel 33367 0
snd_hda_codec 134156 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 13668 1 snd_hda_codec
snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_timer 29990 1 snd_pcm
snd 78855 7 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
soundcore 15091 1 snd
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm