Comment 34 for bug 1457369

I lost sound from my HDMI output

Asus N550LF
 3.19.0-18-generic #18-Ubuntu SMP Tue May 19 18:31:35 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Here my alsa information :
http://www.alsa-project.org/db/?f=b635fafc6bff004d234ad3f33d4abd693f317c93

!!Soundcards recognised by ALSA
!!-----------------------------

 1 [PCH ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xf7a18000 irq 45

!!PCI Soundcards installed in the system
!!--------------------------------------

00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)

!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------

00:03.0 0403: 8086:0a0c (rev 09)
 Subsystem: 8086:2010
--
00:1b.0 0403: 8086:9c20 (rev 04)
 Subsystem: 1043:12dd