I just installed the kernel that you linked and the issue still exists in that kernel. I also installed the latest v3.17 kernel [0]. The issue exists in that kernel as well. However, something appears to have changed in these latest kernel builds. If I go to system preferences-->sound-->test sound, the "front right" and "front left" test sounds consistently work and other sounds work while those sounds are playing and sometimes for a few seconds after the test sounds play. The line "options snd-hda-intel model=imac27_122" is still required in /etc/modprobe.d/imac_local.conf for headphones to function and for this limited/intermittent speaker functionality.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-rc1-utopic/ ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1355984 Title: Built in speakers do not work on iMac 14,2 and iMac 14,4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1355984/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
