Comment 18 for bug 549267

I then use "Update Manager" wich re-install some softwares..

Then the new list is:

root@richard-laptop:~# dpkg --get-selections|grep linux-
linux-alsa-driver-modules-2.6.32-19-generic install
linux-alsa-driver-modules-2.6.32-19-generic-pae install
linux-backports-modules-2.6.31-20-generic deinstall
linux-backports-modules-alsa-2.6.31-20-generic deinstall
linux-backports-modules-alsa-2.6.31-20-generic-pae deinstall
linux-backports-modules-alsa-2.6.32-16-generic install
linux-backports-modules-alsa-2.6.32-16-generic-pae install
linux-firmware install
linux-generic-pae install
linux-headers-2.6.32-17 install
linux-headers-2.6.32-17-generic install
linux-headers-2.6.32-17-generic-pae install
linux-headers-2.6.32-18 install
linux-headers-2.6.32-18-generic install
linux-headers-2.6.32-18-generic-pae install
linux-headers-2.6.32-19 install
linux-headers-2.6.32-19-generic install
linux-headers-2.6.32-19-generic-pae install
linux-headers-2.6.32-20 install
linux-headers-2.6.32-20-generic install
linux-headers-2.6.32-20-generic-pae install
linux-headers-2.6.33-020633 install
linux-headers-alsa-driver-2.6.32-19-generic install
linux-headers-alsa-driver-2.6.32-19-generic-pae install
linux-headers-generic install
linux-headers-generic-pae install
linux-image-2.6.31-20-generic deinstall
linux-image-2.6.31-20-generic-pae install
linux-image-2.6.32-16-generic install
linux-image-2.6.32-16-generic-pae install
linux-image-2.6.32-17-generic-pae install
linux-image-2.6.32-18-generic-pae install
linux-image-2.6.32-19-generic install
linux-image-2.6.32-19-generic-pae install
linux-image-2.6.32-20-generic-pae install
linux-image-2.6.33-020633-generic deinstall
linux-image-2.6.34-020634rc3-generic deinstall
linux-image-generic-pae install
linux-libc-dev install
linux-sound-base install

i then reboot and now the problem initially describe ie: speakers on at the same time headphones.

Thank you for your help...