Date: Wed, 16 Dec 2015 08:54:20 -0600 From: Adam Vande More <amvandemore@gmail.com> To: Anton Sayetsky <vsasjason@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Looking for fully working Intel-based laptop Message-ID: <CA%2BtpaK2Qg4D7sZ8Ord_KD5AGjDaMjxXYJ9RVtcuVz_a3s0O0sw@mail.gmail.com> In-Reply-To: <CAA2O=b9NjZHSpRWaPbYPGiZZQv9afR1Jp8Q%2Bjq6ZwbmzTpOmdQ@mail.gmail.com> References: <CAA2O=b9hswfOnbSuPc-n5Qm0Z1qZK-1%2BrJ7F1AoF83fAn4DeEg@mail.gmail.com> <CAA2O=b_kk1SGXFN2mn_JnCx=JNo_yJBNPqR1%2B7kx3OXw9fmqYw@mail.gmail.com> <CAA2O=b-X68CNVEfsfPip2Qj57Q3UMtxwgOuyi%2B7HYtg8EmRxdg@mail.gmail.com> <CAA2O=b_qhpmg9Qeoa%2BosgVvd9mzND3hoRxk6CaE1%2BsDD4fzuZw@mail.gmail.com> <CA%2BtpaK0xgzK=L4apgJJYnzU_VmBAUAbogD69bUpt50jc3bFgmA@mail.gmail.com> <CAA2O=b9cKuXMNVA85oBkD2kR6ctFt5Y7gDJdeW92MX7L_Rzr3A@mail.gmail.com> <CA%2BtpaK0AveygWB1pBmoY2y1iC-4ruyrrbLBRjs1RNH6rtP-wWw@mail.gmail.com> <CAA2O=b9NjZHSpRWaPbYPGiZZQv9afR1Jp8Q%2Bjq6ZwbmzTpOmdQ@mail.gmail.com>
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On Wed, Dec 16, 2015 at 4:48 AM, Anton Sayetsky <vsasjason@gmail.com> wrote: > > > > I think it switches the output between them internally when stuff like > 3D is active. > Wiki says no - output is never switches: > >When a user launches an application, the graphics driver tries to > determine whether the application would benefit from the discrete GPU. If > so, the GPU is powered up from an idle state and is passed all rendering > calls. Even in this case, though, the integrated graphics processor (IGP) > is used to output the final image. > https://en.m.wikipedia.org/wiki/Nvidia_Optimus > So one can think "unfortunately, my Hasswell/Skylake IGP isn't supported > yet, so I will use nVidia with binary driver". Then he tries and has no > success because still required to load driver for IGP even if not uses it > directly. > The white paper agrees with the wiki so I know of no modern laptop which has truly discrete graphics. Older ones did and you were able to toggle back and forth via func key or bios. I thought AMD still made some mobile CPU/s w/o integrated graphics, but maybe not. -- Adam
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