Date: Wed, 04 Sep 2013 20:06:08 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Bengt Ahlgren <bengta@sics.se> Cc: Kevin Oberman <rkoberman@gmail.com>, freebsd-acpi <freebsd-acpi@FreeBSD.org>, Laura Marie Feeney <lmfeeney@sics.se>, Gleb Smirnoff <glebius@FreeBSD.org>, "Sergey A. Osokin" <osa@FreeBSD.org>, =?UTF-8?B?SmVhbi1Tw6liYXN0aWVuIFDDqWRyb24=?= <dumbbell@FreeBSD.org> Subject: Re: suspend/resume on Lenovo X1 (regression from reports on wiki) Message-ID: <5227CAF0.5040300@FreeBSD.org> In-Reply-To: <5227B893.1000509@FreeBSD.org> 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>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2013-09-04 18:47:47 -0400, Jung-uk Kim wrote: > On 2013-09-04 18:39:07 -0400, Bengt Ahlgren wrote: >> The value of hw.acpi.video.lcd0.brightness changes when the >> screen brightness keys (Fn+Home/End) are pressed, but nothing >> happens with the screen. Same goes for changing the value with >> sysctl. After a fresh boot it works with one issue. The screen >> brightness level seems to lag behind one keypress. Without >> acpi_video, screen brightness changes without the lag. > >> hw.acpi.video.lcd0.active is always stuck at 0 - can't change >> with sysctl (regardless if the screen is on after a fresh boot, >> or black after a text console suspend/resume): > >> [root@bit ~]# sysctl hw.acpi.video.lcd0.active=1 >> hw.acpi.video.lcd0.active: 0 -> 0 > >> Again, for my old X40 with non-KMS Xorg intel driver has >> (curiously, the screen blinks when issuing this sysctl command): > >> [bengta@P142 ~]$ sysctl hw.acpi.video hw.acpi.video.lcd0.active: >> 1 hw.acpi.video.crt0.active: 0 > > Then, KMS probably breaks acpi_video(4), too. :-( kib let me know that there is a way to make it work but it was not well-integrated to i915kms.ko. If you are interested in fixing it, dev/drm2/i915/intel_opregion.c is the source and you can download the specification from here: https://01.org/linuxgraphics/sites/default/files/documentation/acpi_igd_opregion_spec.pdf Jung-uk Kim -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (FreeBSD) iQEcBAEBAgAGBQJSJ8rwAAoJECXpabHZMqHOz3cIAIH5qAXbfWZrWgwJWYAyL9UI z0f/LC5ufqlpgnyvFAHZO75oDebKiDq8skGWDFDhEj8vjp8JIydZSM89EK5wj0zB eCAVwquzcasduGXQZSGyN2tPUqwCm3Fuw3Bsj2Fhwgy3Y0TA9Vsz2KGTH4qCuqWU 7W97FXpLmIOpMBh/LcWCE96hY8u0HxZmzFhjMn5MlJ7z07zEc58YRpieZ3MqACCx ml3dp56RVUQhXXZzrc5Vj+Oxgmti13Xrat7YrzVmpqSRzDtOLNaoqvk4sMz1Crh4 aXq1de1+7Hc+g2oroN3mqDcb5RXknqZ7Aq7wbiOCeQwOzK7vrs3khFWq9luWG9E= =nWlO -----END PGP SIGNATURE-----
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