Yes this patch is already included with kernel 3.19.0-13-generic It actually more of an issue with the audio control panel. The Mic is gray out. But after installing pavucontrol it start to work.
I think the bug now is fix. I reinstall using ubuntu daily 20150412 http://cdimage.ubuntu.com/ubuntu/daily-live/20150412/vivid-desktop-amd64.iso This solve the issue. The Mic is recognise and working. Thank you ** Changed in: alsa-driver (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1442998 Title: [XPS 13 9343, Realtek ALC3263, Mic, Internal] mic slider on top right gray out. Using pavucontrol work fine. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1442998/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
