Re: Brightness keys and booting the kernel
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
Re: Brightness keys and booting the kernel
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:PTLTDAPIC 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 ___ 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
Brightness keys and booting the kernel
Hi, 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. Regards 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
Re: Brightness keys and booting the kernel
On Tue, 1 May 2012 14:55:59 +0400, 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 ___ 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
