From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [alsa-devel] [V2 PATCH] ALSA: hda - Enable mute/mic-mute LEDs for more Thinkpads with Conexant codec Date: Sat, 27 Jun 2015 07:59:58 +0200 Message-ID: <558E3BDE.5070708@web.de> References: <53B51B63.8060809@canonical.com> <53B51CF3.8090102@web.de> <53B52146.9050300@canonical.com> <55603F22.8070103@web.de> <5560A93E.7060607@web.de> <558A4216.8010401@web.de> <558A6E80.7010003@canonical.com> <558BDFD4.9060301@web.de> <558CB778.5020307@canonical.com> <20150626224946.GA11254@khazad-dum.debian.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="TRuHMBPgMxiXphf39RSBaEvNH1Ucj05RC" Return-path: In-Reply-To: <20150626224946.GA11254@khazad-dum.debian.net> Sender: linux-kernel-owner@vger.kernel.org To: Henrique de Moraes Holschuh , Hui Wang Cc: Raymond Yau , alex.hung@canonical.com, ALSA Development Mailing List , Hui Wang , tiwai@suse.de, Linux Kernel Mailing List , david.henningsson@canonical.com List-Id: alsa-devel@alsa-project.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --TRuHMBPgMxiXphf39RSBaEvNH1Ucj05RC Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2015-06-27 00:49, Henrique de Moraes Holschuh wrote: > On Fri, 26 Jun 2015, Hui Wang wrote: >>> Again, I'm on a X121e, and that has only a single physical LED for >>> signaling the power state. The mute button is behind key combination = of >>> the keyboard. >>> >>> Jan >> There is no reason to change a power button to a reset button after >> accessing the acpi device "SSMS", the "SSMS" is for the mute led inste= ad of >> the power management. >> >> I think it is better you login to the lenovo website and look for the = latest >> BIOS image, then upgrade the BIOS on your machine to see if it can sol= ve the >> problem or not. >=20 > Hmm, I think I am missing something here. >=20 > Please explain _in detail_ what you mean with "changing a power button = to a > reset button by acessing the SSMS ACPI method in a X121e". >=20 > Are we trigering a bug somewhere that crashes the x121e and causes it t= o > reboot? Well, there aren't much details to describe in this case: When this patch is applied and I press the power button, the device performs a hard reset. It doesn't reveal if the kernel crashes catastrophically, causing a triple fault or so, or if the firmware decides to reset the platform. Reverting the patch or preventing its effect via a quirk filter like I posted [1] makes the issue go away. Jan [1] http://mailman.alsa-project.org/pipermail/alsa-devel/2014-June/078284.htm= l --TRuHMBPgMxiXphf39RSBaEvNH1Ucj05RC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlWOO94ACgkQitSsb3rl5xR4GwCg0JA9W2JB4wa7+qKo3wj9mdDO i9UAnAk/GRC/65dts6cRwRRPDQDWzx7k =xxrA -----END PGP SIGNATURE----- --TRuHMBPgMxiXphf39RSBaEvNH1Ucj05RC--