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 17:18:49 +0100 Message-ID: <20150512161849.GD3066@sirena.org.uk> References: <55401602.5050907@dell.com> <55480021.1090402@dell.com> <20150511182658.GA8516@isilmar-3.linta.de> <20150512101258.GL2761@sirena.org.uk> <55521BA0.3030606@dell.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="xB0nW4MQa6jZONgY" Return-path: Content-Disposition: inline In-Reply-To: <55521BA0.3030606@dell.com> Sender: linux-acpi-owner@vger.kernel.org To: Mario Limonciello Cc: Dominik Brodowski , "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 --xB0nW4MQa6jZONgY Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, May 12, 2015 at 10:26:24AM -0500, Mario Limonciello wrote: > On 05/12/2015 05:12 AM, Mark Brown wrote: > >On Mon, May 11, 2015 at 08:26:58PM +0200, Dominik Brodowski wrote: Please fix your mail client to word wrap within paragraphs and leave blank lines between paragraphs. Your current mail client is doing neither which makes your mails hard to read. > >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. > Is it just configuration files? With 4.1-rc3 I've not been able to > get sound working mucking with any mixers. You need PulseAudio 6.0 but otherwise yes, it works for me. > >>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. > The errors in dmesg make it seem like that was related to the firmware > missing, but that is a red herring it sounds like. Yes, it is. > >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). > I just tried it with 4.1-rc3 from Ubuntu's mainline PPA and an Ubuntu > 15.04 userspace. It does affect the behavior of the system. See > all the PCM errors in dmesg: That wasn't my question. I'm asking what else the firmware is changing based on detecting Linux, we don't want to just move onto a different set of bugs somewhere else. > https://bugzilla.kernel.org/attachment.cgi?id=176511 > At least with BIOS A03 (latest), Ubuntu 15.04 (3.19ish and modern > userspace) or with 4.0 and recent userspace the experience shouldn't > be bringup. 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. --xB0nW4MQa6jZONgY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJVUifoAAoJECTWi3JdVIfQe8sH/2Pq4+rJAEccjYfDOyi2+7rq sVsWeRkiWoWBnEhU6gnG0O7qTDdMPkuNbuGVySaySUctFDF85cX/qO+M/ISnaNBA TonP3m6+ZB3AAYgeTyyNaqlzOeZaUtSB7TF9nRQzLzzH3RRzDtmQWbfnueckxWfC kBJhL/LwPf5YBiY3m/bBYacMoF6zRHK0dwZd5s+KNIk0iPxDEcvEEZvf03+ydFSD BKaF/QpxG4yBCwuyp4XYIAGgwDqBKMGvusRt90Sv7wpJvy3Y1oMdN3H9zEddhkvT KBcPC89Yw4cYR0g3TTdK0Cx6ustXUlhmX/IxYKLUtCCG8jDeSvGyAPPbt8Bs0+c= =QPz0 -----END PGP SIGNATURE----- --xB0nW4MQa6jZONgY--