Date: Thu, 05 Sep 2013 21:11:11 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Adrian Chadd <adrian@freebsd.org> Cc: Laura Marie Feeney <lmfeeney@sics.se>, freebsd-acpi <freebsd-acpi@freebsd.org>, Kevin Oberman <rkoberman@gmail.com>, Gleb Smirnoff <glebius@freebsd.org>, "Sergey A. Osokin" <osa@freebsd.org>, =?ISO-8859-1?Q?Jean-S=E9bastien_?= =?ISO-8859-1?Q?P=E9dron?= <dumbbell@freebsd.org> Subject: Re: suspend/resume on Lenovo X1 (regression from reports on wiki) Message-ID: <52292BAF.6060508@FreeBSD.org> In-Reply-To: <CAJ-Vmo=GEjKQ7WH014=%2BdOrjkSC=6iicAmHrG-zc5hNci0Envg@mail.gmail.com> References: <521D03AE.3050709@sics.se> <201309031647.47650.jhb@freebsd.org> <522669AF.5000209@FreeBSD.org> <201309040929.35903.jhb@freebsd.org> <52276554.6020807@FreeBSD.org> <uh7a9jsl7qf.fsf@P142.sics.se> <522791D2.9050606@FreeBSD.org> <uh71u54ky9g.fsf@P142.sics.se> <5227B893.1000509@FreeBSD.org> <5227CAF0.5040300@FreeBSD.org> <uh7ob87nifr.fsf@P142.sics.se> <5228EA57.5000005@FreeBSD.org> <CAJ-Vmo=GEjKQ7WH014=%2BdOrjkSC=6iicAmHrG-zc5hNci0Envg@mail.gmail.com>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2013-09-05 20:24:46 -0400, Adrian Chadd wrote: > Whoa whoa. > > I'm confused. Well, a bit. How is it up to syscons to fix the > backlight configuration, which seems to be a large part of the > problem here? No, it has nothing to do with syscons(4). acpi_video(4) does. However, it does not work with i915kms.ko because some piece of code is not implemented for FreeBSD if I understand it correctly. > Or what else is going on here with restoring the system state? It worked with DRM1 because automatic VT-switching (aka sysctl hw.syscons.sc_no_suspend_vtswitch) indirectly saves/restores GPU states via X11 driver, which is no longer possible with KMS. > I'm worried that we'll have the same problem with newcons, with or > without KMS. Why would KMS get involved if I'm in console mode > doing 80x60 text? :) If KMS is used for newcons backend, I am sure text mode won't be implemented. Also, KMS will "naturally" handle suspend/resume as it is a proper newbus driver, unlike syscons. At least, that's the idea. Jung-uk Kim -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (FreeBSD) iQEcBAEBAgAGBQJSKSuvAAoJECXpabHZMqHOA6kIAMLLYNSniDonBSs5QzLvT6aM iISSshjhyykNPCTwZBS5d5LCMAJXuQ7OF7FIYYI7bgrKFX0hzNCAARDJE52/PgQA S1D4ra0slsKm62ezdiOuJhP4C/Hwqihv8/jMK9KmbBSNAyydZ+pPVXHd/JKaCd/U J+g72slzyAm/GYOe8kRb7JGUQsiDyDUbVOOoZZlarqxSEl0kvZFE7rIWBxuD0DGN iGkVB3e0ybIlVNPvjh2CsukBnD2TUYR1ssXFn7zp1Mh9qnQIfoTnQoSDkjDVV1b6 wi2Y1L3cu1kgfG0dCx6CNuH/K3/g0SXA55D8o+NrmLPAQYHWy/TGVm3eKQe30fg= =CY1F -----END PGP SIGNATURE-----
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