From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============5312490281454317869==" MIME-Version: 1.0 From: Alex Hung Subject: Re: [Devel] Fwd: question about _PTS invocation - mandatory ? Date: Wed, 02 Jan 2013 16:14:06 +0800 Message-ID: <50E3EC4E.1070908@canonical.com> In-Reply-To: CAMNNis6OHJQC3qoTO_3tmGamZuGED_D0bLB18zQtf2D1oXeGUw@mail.gmail.com List-ID: To: devel@acpica.org --===============5312490281454317869== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi, I checked ACPI spec 5.0 and it states as below: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 7.3.2 \_PTS (Prepare To Sleep) The _PTS control method is executed by the OS during the sleep = transition process for S1, S2, S3, S4, and for orderly S5 shutdown ... =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D So it seems it is mandatory. On 01/02/2013 03:17 PM, Yaron Weinsberg wrote: > Hi Guys, > is it mandatory for the OSPM to invoke _PTS before switching to the S5 > state ? > I've noticed that during power loss, the BIOS settings sometimes reset. > E.g. all user settings in the BIOS retrun to their default values. > Could it be related ? > what possibly cause the BIOS to reset its settings ? (the battery is new.= .) > thanks, > - Yaron > > > > _______________________________________________ > Devel mailing list > Devel(a)acpica.org > http://lists.acpica.org/listinfo/devel > --===============5312490281454317869==--