Date: Sat, 08 Jun 2013 14:35:05 +0200 From: Florent Peterschmitt <florent@peterschmitt.fr> To: freebsd-hackers@freebsd.org Subject: Re: A way to switch off nVidia discrete cards ? Message-ID: <51B324F9.6060700@peterschmitt.fr> In-Reply-To: <CAPjTQNEuzL2nXey0EaNWDQZWLLd-VMjLu%2BKLX8pLGqikRsknCw@mail.gmail.com> References: <51B2735A.4030201@peterschmitt.fr> <CAPjTQNEuzL2nXey0EaNWDQZWLLd-VMjLu%2BKLX8pLGqikRsknCw@mail.gmail.com>
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[-- Attachment #1 --] Le 08/06/2013 00:08, Oliver Pinter a écrit : > On 6/8/13, Florent Peterschmitt <florent@peterschmitt.fr> wrote: >> Hi, >> >> I've absolutely no skill in system development but I think, based on >> bbswitch (which is part of bumblebee project), that doing such a think >> would not be too difficult. >> >> I have a 9.1-RELEASE FreeBSD which I'm going to upgrade to -current, for >> testing and developing purpose so, is there any documentation or little >> how-to of how to develop for FreeBSD, in the kernel, using access to >> hardware and ACPI ? > > p@pandora-test ~> sysctl -d hw.pci.do_power_nodriver > hw.pci.do_power_nodriver: Place a function into D3 state when no > driver attaches to it. 0 means > disable. 1 means conservatively place devices into D3 state. 2 means > agressively place devices into D3 state. 3 means put absolutely everything > in D3 state. Unfortunately it's not that simple, the nVidia card must be controlled to really shut down… Florent Peterschmitt | Please: florent@peterschmitt.fr | * Avoid HTML/RTF in E-mail +33 (0)6 64 33 97 92 | * PDF for documents http://florent.peterschmitt.fr | Thank you :) [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJRsyT9AAoJEMtO2Sol0IImDZMH/A8y+bzxoHn7Uyc6AUwhVaN5 gRwcm0CZfhXKpowGzmBLjDdODDi8akhTj2Wg7v39k36LXbw4+rSG6zyV2SIzsB8s 9Q83JJotqG7+JIqmcRyTt0R3n5KWbJQRJKJ3qlwTgEM6Xz6Rjx3tKiUBulCT+9Em O8YZnC3og3ob7zD1ghRY74UaG99pHuiOuugUAGLfzCUmxhPgJPUsYv/GrSMX3d6k XSRTtloXmeRq47pWcmgIj8IBdBbunTmz8fvkhyUzhceX9U8FkJz9wc8xSzg8F8DE 1yt5W+2wJX8MKtra7Fs3DdqE1yODvqesUTYuwbfUGL9JEQ1RgymiYb/vN5o84nE= =su9R -----END PGP SIGNATURE-----
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