[mythtv-users] HDMI

[Chris]

On 11/05/2018 6:44 PM, stinga wrote:
> G'day all,
>
> I have just been forced to upgrade due to a crashed disk and decided 
> to make a few changes.
>
> I have managed to get everything working except audio.
>
> Previously I had audio over spdif and video over hdmi, this restricted 
> the quality and channels I could have (I believe)
>
> I now have audio and video over hdmi via an amp
>
> mythtv ---> amp ---> sony tv
>
> But I only get 2 channels.
>
> When I select the audio in frontend setup it can see the Sony TV and 
> says it has two channels, which correct, but I thought it should see 
> the amp which has more.
>
> Any ideas?
>
> [root at mythtv ~]# aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: Intel [HDA Intel], device 1: ALC888 Digital [ALC888 Digital]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
>
>
> [root at mythtv ~]# aplay -L
> null
>     Discard all samples (playback) or generate zero samples (capture)
> default:CARD=Intel
>     HDA Intel, ALC888 Analog
>     Default Audio Device
> sysdefault:CARD=Intel
>     HDA Intel, ALC888 Analog
>     Default Audio Device
> front:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Analog
>     Front speakers
> surround40:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Analog
>     4.0 Surround output to Front and Rear speakers
> surround41:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Analog
>     4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Analog
>     5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Analog
>     5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> surround71:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Analog
>     7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> iec958:CARD=Intel,DEV=0
>     HDA Intel, ALC888 Digital
>     IEC958 (S/PDIF) Digital Audio Output
> hdmi:CARD=NVidia,DEV=0
>     HDA NVidia, HDMI 0
>     HDMI Audio Output
> hdmi:CARD=NVidia,DEV=1
>     HDA NVidia, HDMI 0
>     HDMI Audio Output
> hdmi:CARD=NVidia,DEV=2
>     HDA NVidia, HDMI 0
>     HDMI Audio Output
> hdmi:CARD=NVidia,DEV=3
>     HDA NVidia, HDMI 0
>     HDMI Audio Output
>
> [root at mythtv etc]# mythbackend --version
> Please attach all output as a file in bug reports.
> MythTV Version : v0.25.3-49-gb5adf03
> MythTV Branch : fixes/0.25
> Network Protocol : 72
> Library API : 0.25.20130225-1
> QT Version : 4.8.2
> Options compiled in:
>  linux profile use_hidesyms using_alsa using_oss using_backend 
> using_bindings_perl using_bindings_python using_bindings_php 
> using_crystalhd using_dvb using_firewire using_frontend 
> using_hdhomerun using_ceton using_hdpvr using_iptv using_ivtv 
> using_joystick_menu using_libcrypto using_libdns_sd using_libxml2 
> using_libudf using_lirc using_mheg using_opengl_video using_qtwebkit 
> using_qtscript using_qtdbus using_v4l2 using_x11 using_xrandr using_xv 
> using_bindings_perl using_bindings_python using_bindings_php 
> using_mythtranscode using_opengl using_vaapi using_vdpau 
> using_ffmpeg_threads using_live using_mheg using_libass using_libxml2 
> using_libudf
>
>
>
>
Good evening,
I think I can help with this, there should be a setting in the amplifer  
for the input that Myth is plugged into. This setting is for were the 
audio is going to play from  eg the amplifer or TV. It looks like thee 
amplifer is set to pass-throught the audio to the TV.

Chris