2012/5/5 matt sendtom...@gmail.com:
On 05/01/12 10:13, Nikolay Tychina wrote:
Considering the fact that brightness keys work until kernel is
loaded,
is it possible to make them work
after the kernel is booted in some simple way?
I remember my previous laptop was able to control brightness without
any acpi_* modules and disregarding
OS running.
What make and model laptop? What OS? (this one, and the previous?)
% head -24 /var/run/dmesg.boot
should provide a clue or two.
cheers, Ian
This is Samsung RV511-S02 which runs FreeBSD 9-RELEASE, previous was
Acer Aspire 5520G running FreeBSD 8-STABLE until it burned away in
2010, and I couldn't find dmesg for it.
Regards
ACPI set debug layer 'ACPI_ALL_COMPONENTS ACPI_ALL_DRIVERS' level
'ACPI_LV_ERROR'
Copyright (c) 1992-2012 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-RELEASE #1: Thu Feb 23 18:33:29 MSK 2012
nicholas@rv511:/usr/obj/usr/src/sys/GENERIC amd64
CPU: Intel(R) Core(TM) i3 CPU M 380 @ 2.53GHz (2527.05-MHz K8-class
CPU)
Origin = GenuineIntel Id = 0x20655 Family = 6 Model = 25 Stepping
= 5
Features=0xbfebfbffFPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE
Features2=0x9ae3bdSSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,POPCNT
AMD Features=0x28100800SYSCALL,NX,RDTSCP,LM
AMD Features2=0x1LAHF
TSC: P-state invariant, performance statistics
real memory = 4294967296 (4096 MB)
avail memory = 3940532224 (3757 MB)
Event timer LAPIC quality 600
ACPI APIC Table:PTLTD APIC
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 SMT threads
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 4
cpu3 (AP): APIC ID: 5
___
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
I know that Thinkpads (obviously not the same but the information may be
useful) start in BIOS mode, where acpi does not handle most hotkeys,
brightness etc. So the brightness keys work. As soon as acpi attaches,
however, it trapdoors into ACPI mode, where it expects Windows or Linux
drivers to handle hotkeys and call either acpi video extensions or other
ACPI methods to initiate display changes and brightness. Have you tried
using the acpi_video module?
The reason it works during early kernel and prior on Thinkpads is due to the
fact it hasn't been trapdoored into ACPI mode yet.
Matt
I have tried it, but changing brightness in sysctl doesn't affect anything.
Have just found samsung-laptop.c from linux that reads This driver is
needed because a number of Samsung laptops do not hook their control
settings through ACPI. So we have to poke around in the BIOS to do
things like brightness values, and special key controls.
heh
Nikolay
___
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
