Hi,
I was told to report my bug here because the ALSA bug tracker is no longer active.
I'm having an issue with " Intel Corporation Haswell-ULT HD Audio Controller" card which is inside the Dell XPS13 9333 developer edition [1].
I've tried two different distributions
* Arch Linux (kernel 3.14) Output of alsa-utlils-alsa-info.sh [2]
* Ubuntu 14.04 LTS (kernel 3.13) Output of alsa-utlils-alsa-info.sh [3]
The card behaves correctly under Ubuntu but under Arch Linux I've observed the following issues.
- The microphone does not work correctly. In alsamixer I select "Internal Mic" as my capture device but when I do
$ arecord -d 5 test.wav $ aplay test.wav
test.wav contains silence.
I've also tried enabling/disabling "CAPTURE" on the Capture channel at the same time - I don't really understand why this channel is here (seems a little bizarre) but enabling/disabling "CAPTURE" on this channel doesn't seem to make any difference anyway. Under Ubuntu the "arecord... aplay" command works correctly.
- There probably isn't a way to reproduce this but when I first installed Arch Linux the sound card was put in a state where the headphone jack would not work at all. Sound would continue playing out of the speakers when the headphone jack was inserted and no sound would come out of the headphones. I did notice that if the headphone jack was only partially inserted I would get some sound sent to one of the headphones.
My intuition is that the card is probably being incorrectly initialised because if you take a look at the output of alsa-utils-alsa-info.sh and diff them. Two very big differences I noticed were that
- The card name (from lscpi) is "Intel Corporation Haswell-ULT HD Audio Controller" under Ubuntu but under Arch Linux it is "Intel Corporation Device 0a0c" - The card codec is "Realtek ALC668" under Ubuntu but is "Realtek ALC3661" under Arch Linux.
One interesting I did notice is that under Arch Linux it is possible to use the microphone from the Audacity program by selecting "HDA Intel PCH: ALC3661Analog (hw0:0) Internal mic:0" as the input (this is not the default). Unfortunately I know of no way to make other applications use this.
Any thoughts on how to fix this?
[1] http://www.dell.com/uk/business/p/xps-13-linux/pd [2] https://gist.github.com/delcypher/11367224 [3] https://gist.github.com/delcypher/11367302
Thanks, Dan.