Date: Mon, 12 Jan 2015 09:56:52 -0700 From: Warner Losh <imp@bsdimp.com> To: John Baldwin <jhb@FreeBSD.org> Cc: Matthias Apitz <guru@unixarea.de>, freebsd-mobile@freebsd.org Subject: Re: power off ath0: <Atheros AR946x/AR948x> Message-ID: <87A73FD4-485B-4F38-B9D2-3F804BED4905@bsdimp.com> In-Reply-To: <54B3FC5F.3070306@FreeBSD.org> References: <20150111080530.GA2035@c720-r276659> <54B3FC5F.3070306@FreeBSD.org>
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[-- Attachment #1 --] > On Jan 12, 2015, at 9:54 AM, John Baldwin <jhb@FreeBSD.org> wrote: > > On 1/11/15 3:05 AM, Matthias Apitz wrote: >> >> Hello, >> >> Is there a way to completely power-off the Wifi chip in my Acer C720? >> I tried 'ifconfig ath0 down' which saves around 20 mA. But the LED stays >> on, which let me think it is still someow on-air. > > Not yet. You could try setting the tunable to disable power for PCI > devices without a driver and not include 'ath' in your kernel config. I > will (soon) commit a new 'devctl' tool to HEAD that would let you do > 'devctl suspend ath0' to do this. I’d love to see this tied into the forthcoming work on PCIe hot plug as well, which is one way to power off the slot. But that work seems to be stalled… Warner [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJUs/zUAAoJEGwc0Sh9sBEAKqUQAJAESrQ+e9wFYFqXYNfBT+DF eYBYTwV6C3d4SY6tr8iTVQA9hzUvSrbeI61Xsq8FHRBJRIftVsEj3gN59B2GLCmp ylQdPyf0GunP2p+gwKdi2F1P83ir/O0epKNVvmlAJIxLVb5d5RucVVtF0l79Pt0e SLfmFRXXBS+gFzRSZYE94XnFtbsij4/DTjWhem0QDsRchlRz8SkigtnpiBSul0uJ cl8dZAPbiFEVNPBBGBUl9dRdCl8Zr5Ji36nmOhoNpQ7aaiWL3x7db8N+F/81KDiC E/2zr+NCUsMhiVdSQzKohmm5OecyUenEoQgm2vxwU+d11kbOea5QGpQfQpNh1oEb 3XWgABbDctQhPgBQ5ZvjQraLzx9X8S/+oxfib1dcAZpbRcWm1iFRTuAR4LLs4KoU qTtqtwhBcRhQGOkk/niX1aCtBChL3odCpBx4ZH+33ACQt5nxlT99FCa/AYOkMnbW mIoyUzWod22gQsm7NYefXV89YjvM1jKpGGx9TbY78I1dTomTaKwfVlsGt2gTavf0 SZtSg05zxWUuVytkgELnPGVekn1C47tD2y8qc5xV4+og8LKLbXBeK9GrPZj80G0t mglwoNI+r+OW4IOT4oiPO4aHSg+l7eAXpwS4OUZVMMsPfqO67ADOEMIgrChr+WAC NPDbn+QMABaHjZscdNop =XQVr -----END PGP SIGNATURE-----help
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