<div dir="ltr"><div>I've checked the interrupts for 120000.hdmi and they do increment with aplay without the sound server, as well as when the sound server is loaded and I play audio files with mpv or vlc.</div><div>The sgtl5000 unit is playing audio on analog output fine, only the digital outputs don't produce sound.<br></div>Still haven't checked what happens when unloading the kernel modules for the other audio devices... I will have to compile the kernel with such devices defined as modules, so that I can unload or blacklist them. <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 6, 2017 at 2:44 PM, Russell King - ARM Linux <span dir="ltr"><<a href="mailto:linux@armlinux.org.uk" target="_blank">linux@armlinux.org.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Mon, Nov 06, 2017 at 02:32:19PM +0000, Luís Mendes wrote:<br>
> Thanks for the replies!<br>
><br>
> Russell, the profile you sent me, did help, it was indeed missing. Now I<br>
> have Digital Stereo (HDMI) Output and Digital Stereo (IEC958) Output<br>
> besides the one I already had for this sound card (Analog Stereo Output).<br>
><br>
> Unfortunately I still get no sound on HDMI, neither on IEC958 optical<br>
> output, although the laser led lit up when I set the output to IEC958, but<br>
> no sound on neither outputs.<br>
><br>
> I have rechecked the kernel configuration of linux-4.14-rc5, but I don't<br>
> find anything wrong with it... I am testing with the Wandboard Quad Plus.<br>
<br>
</span>I'd suggest as a first step getting rid of every other sound capable<br>
device apart from the dw-hdmi driver.<br>
<br>
Next, try playing an audio file with aplay:<br>
<br>
aplay -D front:CARD=DWHDMI,DEV=0 some.wav<br>
<br>
You may have to disable your sound daemon for that to work.<br>
<br>
Check /proc/interrupts, see whether the interrupt count for 120000.hdmi<br>
increases when you play an audio file.<br>
<br>
Then try via the sound daemon.<br>
<br>
Let me know how you get on.<br>
<div class="HOEnZb"><div class="h5"><br>
--<br>
RMK's Patch system: <a href="http://www.armlinux.org.uk/developer/patches/" rel="noreferrer" target="_blank">http://www.armlinux.org.uk/<wbr>developer/patches/</a><br>
FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up<br>
According to <a href="http://speedtest.net" rel="noreferrer" target="_blank">speedtest.net</a>: 8.21Mbps down 510kbps up<br>
</div></div></blockquote></div><br></div>