Date: Thu, 29 Nov 2018 13:27:34 +0100 From: Julien Cigar <julien@perdition.city> To: Ken M <ken@mack-z.com> Cc: freebsd-questions@freebsd.org Subject: Re: Power management Message-ID: <20181129122734.GR26775@mordor.lan> In-Reply-To: <20181129113646.GA45451@ultron> References: <20181129113646.GA45451@ultron>
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--kAOhhqH5290wydqT Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Nov 29, 2018 at 06:36:46AM -0500, Ken M wrote: > Recently returning as a freebsd desktop/laptop user. I have a thinkpad t4= 40 that > previously ran openbsd and now has freebsd 11.2 on it. >=20 > I am noticing that it seems freebsd is consuming the battery slightly fas= ter. > Granted that could easily be explained by perhaps usage. >=20 > However one thing I cannot seem to dig up is setting a defauly boot brigh= tness. > Now the t440 brightness keys work just fine. In fact no tweaks needed. So= I am > guessing it is a bios function. I was thinking a sysctl setting would do = it but > case in point. >=20 > sysctl hw.acpi > hw.acpi.acline: 0 > hw.acpi.battery.info_expire: 5 > hw.acpi.battery.units: 2 > hw.acpi.battery.state: 1 > hw.acpi.battery.time: 267 > hw.acpi.battery.life: 96 > hw.acpi.thermal.tz0._TSP: -1 > hw.acpi.thermal.tz0._TC2: -1 > hw.acpi.thermal.tz0._TC1: -1 > hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 > hw.acpi.thermal.tz0._CRT: -1 > hw.acpi.thermal.tz0._HOT: -1 > hw.acpi.thermal.tz0._PSV: -1 > hw.acpi.thermal.tz0.thermal_flags: 0 > hw.acpi.thermal.tz0.passive_cooling: 0 > hw.acpi.thermal.tz0.active: -1 > hw.acpi.thermal.tz0.temperature: 36.1C > hw.acpi.thermal.user_override: 0 > hw.acpi.thermal.polling_rate: 10 > hw.acpi.thermal.min_runtime: 0 > hw.acpi.cpu.cx_lowest: C8 > hw.acpi.reset_video: 0 > hw.acpi.handle_reboot: 1 > hw.acpi.disable_on_reboot: 0 > hw.acpi.verbose: 0 > hw.acpi.s4bios: 0 > hw.acpi.sleep_delay: 1 > hw.acpi.suspend_state: S3 > hw.acpi.standby_state: NONE > hw.acpi.lid_switch_state: S3 > hw.acpi.sleep_button_state: S3 > hw.acpi.power_button_state: S5 > hw.acpi.supported_sleep_state: S3 S4 S5 >=20 > No brightness settings there. On a whim I thought I would see what xbackl= ight > could do for me. >=20 > xbacklight -get > No outputs have backlight property >=20 > So I guess the long and short of my question is what would be the correct= way to > set the brightness at boot? And also is there perhaps any other tweaks I = could > make to improve battery life? try to add: in /boot/loader.conf: acpi_video_load=3D"YES" in /etc/sysctl.conf: hw.acpi.video.lcd0.brightness=3D50 >=20 > Thank you, > Ken > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" --=20 Julien Cigar Belgian Biodiversity Platform (http://www.biodiversity.be) PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 No trees were killed in the creation of this message. However, many electrons were terribly inconvenienced. --kAOhhqH5290wydqT Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE7vn2l0to0nV7EWolsrs3EKIEI8AFAlv/2zIACgkQsrs3EKIE I8CEaA/5AdhHH7B194sDzBjiaYwMm0JsyEEczjhD3AstPSNrIBfLukEz/lr1NaI8 RF2o/GMjP9U4VxiS/91vtLEOinzr5xi461hKZ8BNEfpd0psAACZcLekmJyd+6wzx hvVVFjJ3DpnHmWWbCt/F6REtnmcUrayuuPKyUwpyvUzfLuwPxJLgzjpL9WweJfDN X5NGz4LCncoHfhgSrJ2zNDmHeicsNCsysa54F3zGPSTss/Lt3x34pwtHBsJV9cJM RGoYbRg6NCsCXpHtFsSTHp+CFI2aMcZkFVHPUp9DoShO+V5gqbyD9UMGU5SX4Rxk xzMxo9SWFegqz/vuxejW7jrveNwCjxyDR53JgqPwt0yUOboCPxktPUbnCEudDmRV +NLalSRYI4+1fpwZ870YY+I4m6SjgXnC+wACbK/OYK6bX9esSk4j1sRnBWt27vXr VxCIraSeSh8Cjc9+nm5FxW+z1DiXC+Hoa7Z5CwOH4F2xMDTTVuknef968gyM+kIM fHFqqBcgC95iPY6/EbYKQKPyxrJmLIJzq0HKoRVOrbct2FJS1abHqPLRvV1TtTRd D6c2zjVKBrTvXy+PBclWw1kkMhSaAz8XbsIbJK6DPsWjS8EOYDahfwLFWnqZQpdc lmiGvVqapX56cq3gHYGa8G3kr9udRQNwKQmlMF+hZBIFN7u6ULw= =vXtV -----END PGP SIGNATURE----- --kAOhhqH5290wydqT--
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