From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown 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] Date: Tue, 12 May 2015 11:12:58 +0100 Message-ID: <20150512101258.GL2761@sirena.org.uk> References: <55401602.5050907@dell.com> <55480021.1090402@dell.com> <20150511182658.GA8516@isilmar-3.linta.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="hdW7zL/qDS6RXdAL" Return-path: Content-Disposition: inline In-Reply-To: <20150511182658.GA8516@isilmar-3.linta.de> Sender: linux-acpi-owner@vger.kernel.org To: Dominik Brodowski Cc: Mario Limonciello , robert.moore@intel.com, lv.zheng@intel.com, rafael.j.wysocki@intel.com, "linux-acpi@vger.kernel.org" , han.lu@intel.com, yang.jie@intel.com, alsa-devel@alsa-project.org, Matthew Garrett , liam.r.girdwood@intel.com List-Id: alsa-devel@alsa-project.org --hdW7zL/qDS6RXdAL Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, May 11, 2015 at 08:26:58PM +0200, Dominik Brodowski wrote: Also CCing Matthew who came up with the original version of the version change and Liam who is one of Intel's audio experts. > According to an off-list discussion, the sound breakage (and not just some > jack detection issue) seems to be caused due to alsa-lib being too old. Right, it needs the userspace configuration files installing. > The matter is further complicated by the issue that the driver > asks for some firmware blob intel/IntcPP01.bin which (at least) I > cannot find anywhere. As previously advised that firmware is optional. > Under the no-regression rule, this means that either b1ef29725865 needs > to be reverted or we need to find another solution to this matter, such as > an override. And I think it is needed for longer than just for 4.1, as it > will continue to be cause regressions on quite recent userspace. Does this also affect other behaviour of the system? I'd be pretty unhappy if it introduce power regressions for example, I mostly don't use audio on my laptops but I care a lot about how long it'll run disconnected. It *is* quite a new laptop and my experience installing was very much that it was in bringup (though quite a bit of this was userspace). --hdW7zL/qDS6RXdAL Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJVUdIlAAoJECTWi3JdVIfQWx0H/3V3SGtx3hvUfFroJX5tKQqB p2dGnPmEztMwTnf9ZDgp+x+3cg+wvdOqHzpVSe62EbSxkF2RmpWvNpuC5US1oZuv 3I/B3IGpb/+56uhCkkLSa+/apweU/+nXG3vZUA+YOtjwVEtPJrvjVCrIWqR9o7TR NFU6JTkWd0iGt/df5ee0fWee7odALiZuxl6533e47OVfyxGp7uS0nk1L5gBWiGMO OXAZnD4NdbBGoZrmhO3U2nC6XZC8bu8SUQvVxnmnZQHePtyDVANwmAE8TUAqxasv raLPpPvvarsZ1UrvPB9LFkopPl6tOCi025ok9lLHuOGSqhKDdXiLAVTFbYHj1e4= =u50f -----END PGP SIGNATURE----- --hdW7zL/qDS6RXdAL--