@chris-lea:
> Update with some new info. I booted into Win10 and noticed that it wasn't
> recognizing an audio
> device. Googled around a bit and ended up (re)installing the Realtek drivers
> largely by following
> what I read here:
You need to power-cycle your laptop between Windows<->Linux
I filled a kernel bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=118051
** Bug watch added: Linux Kernel Bug Tracker #118051
http://bugzilla.kernel.org/show_bug.cgi?id=118051
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Update with some new info. I booted into Win10 and noticed that it
wasn't recognizing an audio device. Googled around a bit and ended up
(re)installing the Realtek drivers largely by following what I read
here:
http://en.community.dell.com/support-forums/laptop/f/3517/t/19630850
NOTE: I did the
As far as I can tell I'm seeing the same sort of problem with a clean
install of Ubuntu Mate 16.04 on my Dell XPS 13 9343.
>From what I can tell, the machine thinks it's playing audio. If you look
at the input tab of the sound preferences when a youtube video is
playing, it's clearly processing
Same problem with Fedora:
https://bugzilla.redhat.com/show_bug.cgi?id=1313434
** Bug watch added: Red Hat Bugzilla #1313434
https://bugzilla.redhat.com/show_bug.cgi?id=1313434
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** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1551880
Title:
[Dell XPS 13 9343] Audio broken with I2S mode in Ubuntu
Okay okay, after some hours investigating, here are my thoughts:
- Still no idea why the audio device was missing at all at the beginning.
Re-appeared, no problems since then.
- I2S sound is working fine in kernel 4.4.
- But the Ubuntu kernel keeps using the CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
So, well. The audio device isn't missing anymore and I have no idea why.
But it looks like Xubuntu 16.04 Beta 1 is using HDA sound by default. I
attached two images. When I cold boot Xubuntu a few times I have two
internal audio devices, one for HDMI and one for 3,5 mm/speaker. After
dual booting
** Attachment added: "Sound after dual booting Windows 10 before - switching to
I2S mode."
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1551880/+attachment/4586471/+files/I2S2.png
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** Attachment added: "Sound after cold booting Xubuntu 16.04 Beta 1 a few
times. Looks like the kernel uses HDA audio by default. You just have 2x
internal audio, one for HDMI, one for 3,5 mm."
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1551880/+attachment/4586470/+files/HDA.png
Weird. I have the same laptop and the same A07 BIOS (which is also the
latest one). And my audio works perfectly in regular Ubuntu 16.04
(Unity7). Even working with kernel 4.4.
Xubuntu may well have different audio interfaces. But I also find it
curious I don't see any haswell/broadwell audio
** Summary changed:
- [Dell XPS 13 9343] Audio broken with I2S mode in Ubuntu 16.04
+ [Dell XPS 13 9343] Audio broken with I2S mode in Ubuntu 16.04 kernel 4.4 (but
works with kernel 4.3)
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