Apologies. The alsa-devel mailing list just rejected my last e-mail due to the large attachments. Here is the same e-mail again without attachments and links to the relevant files instead. Sorry for the noise.
---------- Forwarded message ---------- From: Delcypher delcypher@gmail.com Date: 5 May 2014 09:46 Subject: Re: [alsa-devel] Regression Intel Corporation Haswell-ULT HD Audio Controller To: Takashi Iwai tiwai@suse.de Cc: David Henningsson david.henningsson@canonical.com, Po-Hsu Lin po-hsu.lin@canonical.com, ALSA Development Mailing List alsa-devel@alsa-project.org
Thank you for your suggestions:
If I run
$ amixer -c0 get Capture Simple mixer control 'Capture',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 63 Front Left: Capture 63 [100%] [30.00dB] [on] Front Right: Capture 63 [100%] [30.00dB] [on]
So I think it's currently already on (I think I may of switched it on after running the script, but it didn't make any difference). I ran `` amixer -c0 set Capture cap`` and it didn't fix my microphone issue.
I also tried using model=nofixup and that didn't fix the microphone issue either :(
I just tried doing something different and to my surprise it fixed my microphone issue, i.e. after doing this the following commands
$ arecord -d 5 test.wav $ aplay test.wav
work (test.wav isn't complete silence).
There was one mixer control in alsamixer that I hadn't touched with the name "Digital". I had not played with it before because I presumed it shouldn't have anything to do with the internal microphone. I changed it from 0 to some non zero value and to my surprise my internal microphone now works.
So is this a bug or an intended feature? I've attached the output of alsa-utlils-alsa-info.sh before and after the mixer adjustment in the hope that it will help.
**EDIT**: Links to output. Before: https://gist.github.com/delcypher/d9a05a393c7a36d44dad After: https://gist.github.com/delcypher/f75c3f8c543866f6a2e0
On 5 May 2014 09:02, Takashi Iwai tiwai@suse.de wrote:
At Sat, 3 May 2014 12:57:55 +0100, Delcypher wrote:
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I was told to report my bug here because the ALSA bug tracker is no longer active.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
The "Capture Switch" is off, according to alsa-info.sh output. Try to turn it on. % amixer -c0 set Capture cap
If this doesn't help, it must be a quirk added in 3.14 kernel: commit f47e5dc464251f661da9495fcbf003a0d22c1360 ALSA: hda - Add a headset quirk for Dell XPS 13
I added relevant people in Cc.
Meanwhile, you can try to pass model=nofixup to snd-hda-intel module for avoiding the added fixup above.
thanks,
Takashi