[alsa-devel] commit b1ef29725865 (ACPI _REV=2) causes sound regression on Dell XPS 13 [Was: Discussion around quirking the _REV behavior for the XPS 13 (2015) until 4.2]

[Jie, Yang]

> -----Original Message-----
> From: Mark Brown [mailto:broonie at kernel.org]
> Sent: Wednesday, May 13, 2015 1:35 AM
> To: Mario Limonciello
> Cc: Dominik Brodowski; Moore, Robert; Zheng, Lv; Wysocki, Rafael J; linux-
> acpi at vger.kernel.org; Lu, Han; Jie, Yang; alsa-devel at alsa-project.org;
> Matthew Garrett; Girdwood, Liam R
> Subject: Re: commit b1ef29725865 (ACPI _REV=2) causes sound regression
> on Dell XPS 13 [Was: Discussion around quirking the _REV behavior for the
> XPS 13 (2015) until 4.2]
> 
> On Tue, May 12, 2015 at 11:45:40AM -0500, Mario Limonciello wrote:
> 
> > >I'm not seeing any of the hw_params() issues with v4.1 - are you
> > >perhaps using an old linux-firmware?  I don't know how up to date
> > >Ubuntu is there.
> 
> > linux-firmware ubuntu 15.04 version: 1.143.
> > This is based off upstream cef33368c4d3425f11306496f0250f8ef1cf3c1f,
> > updated on March 4 2015.
> 
> That's the same firmware I have.  Weird, I don't know if the Intel guys have
> any bright ideas here?
 
Hi Mario, can you try disabling pulseaudio to see if anything change?
Once I got one XPS 13 9343, I can debug on it, we have ordered it, but been
told still need wait 4 more weeks for lacking of the LCD screen materials.

~Keyon