There is a possible fix for this problem in the newly released 2.6.34-rc3 linux kernel. From the changelog:
Daniel T Chen (3): ALSA: ac97: Add IBM ThinkPad R40e to Headphone/Line Jack Sense blacklist There should soon be a PPA of this kernel RC available at http://kernel.ubuntu.com/~kernel-ppa/mainline/ -- On IBM Thinkpad T40 series, the Headphone Jack and/or Line Jack inputs need to be muted in order to hear sound at all. https://bugs.launchpad.net/bugs/303789 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