-----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----- _______________________________________________ freebsd-acpi@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-acpi To unsubscribe, send any mail to "freebsd-acpi-unsubscr...@freebsd.org"
