Audio on manta/Nexus 10 non-functional on Ubuntu touch.

[Luke Yelavich]

 affects ubuntu/linux-manta

 affects ubuntu/pulseaudio

I'm filing against the kernel for manta and pulse, because I am not entirely sure where the problem may lie, although based on the logs I've been able to gather, I suspect the kernel moreso than Pulse itself.

I'm unable to hear audio either via the internal speakers or the headphone jack when either using paplay on the command-line, or using the music app. In addition, the music app doesn't update the playing position in the UI. I'm using flac files to test with, and I have verified that the UI works as expected on the nexus 7, where audio works without issue. Eventually, the music player appears to stop playing the file as if it were finished, even though no other UI updates of track position are shown.

I have attached 2 logs, one with the sink set to the manta-i2s card, and the other with the output set to the manta-spdif card. Incidentaly the spdif device is being chosen as the default device after a fresh image flash, but thats not relevant here. These logs were obtained by following the procedure at https://wiki.ubuntu.com/PulseAudio/Log, with the addition of disabling the pulseaudio user session upstart job.

Here are the details from system-image-cli -i re the build number and channel, although its worth noting that I have experienced this bug on standard daily images as well.

phablet@ubuntu-phablet:~$ sudo system-image-cli -i
current build number: 42
device name: manta
channel: daily-proposed
last update: 2013-09-11 23:21:24

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[David Henningsson (diwic)]

Oh, apparently the pulseaudio fix was included in 1:4.0-0ubuntu5

[David Henningsson (diwic)]

And the alsa-lib one, too...I just didn't notice

[Roman Zonov (roman2861)]

What about headphones? They aren't working.

[David Henningsson (diwic)]

@Zonov, currently you need to switch manually to headphones using this command:

pactl set-sink-port @DEFAULT_SINK@ "[Out] Headphones"

This requires pulseaudio-utils package to be installed, which it isn't be default.

The reason for this is that Nexus 10 uses a different jack detection interface than the other devices. We currently do not support that interface in PulseAudio.