No sound on Laptop HP Compaq 6735s ?

[Fred Le Rouge]

Hello everyone,
I recently installed Lubuntu 13.04 64 bits on a friend's laptop HP Compaq 6735s but there is no sound. There is sound from the headphones but not from the integrated speakers. We found a lot of similar problems on the internet but the proposed solutions did not work for his laptop. Indeed most of the solutions date back from Ubuntu 8.04 or 8.10.
Here are some informations about the sound card :

HDA ATI SB
AD198x Analog
AD1984A
SBx00 Azalia (Intel HDA)
Analog Devices ID 194a
LSI ID 1040

Could you help us please?

[Fred Le Rouge]

I tried what is explained here https://help.ubuntu.com/community/HdaIntelSoundHowto but it did not work.
I modified the file /etc/modprobe.d/alsa-base.conf by adding

options snd-hda-intel model=mobile

or

options snd-hda-intel model=laptop

at the end, I rebooted but it did not work.
Any idea?

[Fred Le Rouge]

Problem solved ! I installed Lubuntu 12.04 and then updated to 12.10 and 13.04 and it worked ! I remembered that the parameters worked in 12.04 so I updated gradually to 13.04 so that the sound parameters would not change.