http://voices.canonical.com/david.henningsson/2011/11/29/turn-your-mic- jack-into-a-headphone-jack/
since your alienware have headset and headphone jacks, the two dell models won't works as they are dessigned for those single Jack dell notebook https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_realtek.c?id=560b92779cb8748fbf01436b19b1269b6193819b http://voices.canonical.com/david.henningsson/2014/03/07/headset-jacks-on-newer-laptops/ seem not support retasking headset Jack to line out -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1332900 Title: [Alienware 18, Realtek ALC668, Speaker, Internal] Playback problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1332900/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
