Date: Fri, 20 Mar 2009 19:13:40 +0000 From: Bruce Cran <bruce@cran.org.uk> To: Daniel =?UTF-8?B?RHZvxZnDoWs=?= <dandee@hellteam.net> Cc: freebsd-acpi@FreeBSD.org Subject: Re: kern/108581: [sysctl] sysctl: hw.acpi.cpu.cx_lowest: Invalid argument Message-ID: <20090320191340.7cff38c9@gluon> In-Reply-To: <200903200030.n2K0U3iG011009@freefall.freebsd.org> References: <200903200030.n2K0U3iG011009@freefall.freebsd.org>
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On Fri, 20 Mar 2009 00:30:03 GMT Daniel Dvo=C5=99=C3=A1k <dandee@hellteam.net> wrote: > The following reply was made to PR kern/108581; it has been noted by > GNATS. >=20 > From: =3D?UTF-8?Q?Daniel_Dvo=3DC5=3D99=3DC3=3DA1k?=3D <dandee@hellteam.ne= t> > To: <bug-followup@FreeBSD.org>, > <lars.stokholm@gmail.com> > Cc: =20 > Subject: Re: kern/108581: [sysctl] sysctl: hw.acpi.cpu.cx_lowest: > Invalid argument Date: Fri, 20 Mar 2009 01:01:51 +0100 >=20 > This is a multi-part message in MIME format. > =20 > ------=3D_NextPart_000_0007_01C9A8F7.746C4190 > Content-Type: text/plain; > charset=3D"UTF-8" > Content-Transfer-Encoding: quoted-printable > =20 > Hi acpi team, > =3D20 > today I have installed fbsd 7.1R on one box with this relativly old =3D > error and I was surprised about results .. it is the same: > =3D20 > # uname -a > FreeBSD X.Y.Z 7.1-RELEASE FreeBSD 7.1-RELEASE #0: Thu Jan 1 > 14:37:25 =3D UTC 2009 > root@logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC =3D i386 > =20 > # sysctl dev.cpu.0.cx_supported > dev.cpu.0.cx_supported: C1/0 > =20 > # sysctl hw.acpi.cpu.cx_lowest=3D3DC1 > hw.acpi.cpu.cx_lowest: C1 > sysctl: hw.acpi.cpu.cx_lowest: Invalid argument I get the same error on my relatively ancient Athlon XP machine - I originally bought it in 2002. Since it pre-dates all the CPU power-saving technologies I wouldn't expect setting Cx to do anything, but it seems FreeBSD creates the sysctl nodes regardless, and tries to initialize cx_lowest to C1 during boot. --=20 Bruce Cran
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