Bug 106361

Summary:	Linux Mint No Sound HDMI Output
Product:	PulseAudio	Reporter:	Pavel Komarov <pvlkmrv>
Component:	alsa	Assignee:	pulseaudio-bugs
Status:	RESOLVED MOVED	QA Contact:	pulseaudio-bugs
Severity:	normal
Priority:	medium	CC:	lennart
Version:	unspecified
Hardware:	All
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Pavel Komarov 2018-05-02 18:25:18 UTC

```
 * Cinnamon version 3.6.7
 * Distribution - Mint 17.3
 * Intel HD Graphics 5500 with Intel Corporation Broadwell-U Integrated Graphics (rev 09) (prog-if 00 [VGA controller])
 * 64 bit
 ```

**Issue**
I have been using Linux Mint since 2014 across four different computers and have never in all this time been able to output sound over HDMI. There are numerous issues on the linux mint forums about it (https://forums.linuxmint.com/viewtopic.php?t=242328, for example), but none have ever provided a solution that has worked for me.

**Steps to reproduce**
Install Linux Mint, plug your computer in to a TV via HDMI, and try to play a video. The picture will appear just fine, but audio will continue to come from the laptop.

**Expected behaviour**
Both audio and video should be output to the TV.

**Other information**
I've heard whispers of this occurring with other distros, though a friend who uses Ubuntu claims he has not had this problem.

Comment 1 Tanu Kaskinen 2018-05-03 10:19:02 UTC

(In reply to Pavel Komarov from comment #0)
> **Steps to reproduce**
> Install Linux Mint, plug your computer in to a TV via HDMI, and try to play
> a video. The picture will appear just fine, but audio will continue to come
> from the laptop.
> 
> **Expected behaviour**
> Both audio and video should be output to the TV.

Do you expect audio to move to HDMI without any other action than plugging in the HDMI cable? That's not going to happen, because not all HDMI monitors have speakers and automatically switching to a silent output would be very bad. You'll need to select the HDMI output manually (but only once - after you've chosen the HDMI output, PulseAudio should remember that choice).

Caveat: if you start playing the video before plugging in the HDMI cable, PulseAudio will probably not move the existing audio stream to the HDMI output automatically. Only new streams are expected to go to HDMI. I hope to fix this in PulseAudio 13.0.

If you continue to have the problem even after manually choosing the HDMI output, please attach the output of "pactl list" when the HDMI cable is plugged in. Use the "Add an attachment" link for that (sometimes people paste long texts to the comment box, which makes it difficult to read the discussion).

Comment 2 GitLab Migration User 2018-07-30 10:26:34 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/423.

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