All right. I uninstalled the backports-package. However, when I tried: $ sudo aptitude install linux-alsa-driver-modules-2.6.32-25-generic
I found out that there are no packages with this name (to be specific, my kernel is not supported, as my kernel is 2.6.32-25 and these drivers are for <= 2.6.32-24, atm) -- [Realtek ALC269] ALSA test tone not correctly played back using headphones in a combined mic/headphone-jack https://bugs.launchpad.net/bugs/645312 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs