No hdmi sound output

[linuxmonkey]

Hi

Yesterday did a fresh install of kubuntu 15 with plasma 5.2. At first i saw a hdmi sound output in the sound settings. Great! But
it has completely dissapeared. No i only see an analog stereo output. Also i cant start alsamixer anymore.

lspic: 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
valentin@ASUS-N551JQ:~$ alsamixer
cannot open mixer: No such file or directory

Already added myself to the audio group.

Output of various commands:

ls /dev/snd -l
total 0
drwxr-xr-x 2 root root 60 mei 24 23:43 by-path
crw-rw----+ 1 root audio 116, 2 mei 24 23:46 controlC1
crw-rw----+ 1 root audio 116, 5 mei 24 23:46 hwC1D0
crw-rw----+ 1 root audio 116, 4 mei 24 23:46 pcmC1D0c
crw-rw----+ 1 root audio 116, 3 mei 24 23:46 pcmC1D0p
crw-rw----+ 1 root audio 116, 1 mei 24 23:46 seq
crw-rw----+ 1 root audio 116, 33 mei 24 23:46 timer



ls /dev/mixer -l
ls: cannot access /dev/mixer: No such file or directory
valentin@ASUS-N551JQ:~$

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 1: PCH [HDA Intel PCH], device 0: ALC668 Analog [ALC668 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0

alsaloop
ALSA lib pcm_hw.c:1667_snd_pcm_hw_open) Invalid value for card
playback hw:0,0 open error: No such file or directory
Loopback initialization failure.




I already purged all the alsa/pulseaudio en soundbase packages and reinstalled them. hdmi sound does not come back.




Best regards,

[sithlord48]

you need to move your hdmi to be the prefered device in system setting -> multimedia - > device preference.

[SeijiSensei]

Seems to be a widely-reported bug with the most recent Intel driver: http://ubuntuforums.org/showthread.p...1#post13291005