[mythtv-users] HDMI audio change

[Peter Carlsson]

On Wed, Feb 28, 2018 at 03:32:56PM +0000, John Pilkington wrote:
> On 28/02/18 11:39, jksj wrote:
> > There have been a couple of recent threads concerning HDMI audio. Just
> > to confirm that when running Ubuntu LTS 16.04 a system change occurred
> > in January that caused audio to swap ports. This happened on both the
> > 4.4 and 4.13 kernels.
> > 
> > |speaker-test -t wav -c 6 -D 'hw:CARD=NVidia,DEV=7' # works on 4.4.0-112|
> > 
> > |but on later kernels the device changes to 3
> > |
> > 
> > ||||
> > 
> > ||speaker-test -t wav -c 6 -D 'hw:CARD=NVidia,DEV=3'||
> > 
> > |
> > 
> > |My hardware config is a GT1030 using driver ||390.25.|
> > 
> 
> I'm puzzled by my current audio devices in f26.  I used to see intel HDA and
> NVidia hdmi as alternatives offered on the desktop.  Now I don't see an
> intel option, but saa7134_alsa has appeared and seems to be causing trouble,
> as reported in my earlier post about the frontend audio-system tests.  I
> don't think I want it.  The saa7134 PCI card has always been physically
> present and is my main DVB-T SD card in that box.  'modprobe -r
> saa7134_alsa' just failed, reporting that it was in use.  Perhaps I need to
> zap it earlier.
> 
> GeForce GT 710 with GK 708 audio subsystem, video driver 390.25,
> 4.15.4-200.fc26.x86_64
> 
> dmesg | grep -i nvidia shows HDMI/DP, pcm=3 and 7, as cardd0/inputs 7 and 8
> 
> dmesg | grep -i hda shows a vga switcheroo audio client...
> 
> HDMI stereo works but defaults to HDMI2 mode and fails on start of playback
> of some files.  Usually recovers on setting to plain HDMI

Has anyone had any success on this problem. I still have no audio via
HDMI and I do not really know where to go with the troubleshooting.

Best regards,
Peter Carlsson