> Date: Fri, 02 Oct 2009 19:30:58 +0400 > From: "Marat N.Afanasyev" <ama...@ksu.ru> > Sender: owner-freebsd-sta...@freebsd.org > > kama wrote: > > Hi, > > > > there are a lot of different errors in various document regarding acpi > > that are wrong. > > > > In 'man acpi' it says that 'hint.acpi.0.disabled' should be placed in > > loader.conf. > > > > ------------- > > LOADER TUNABLES > > Tunables can be set at the loader(8) prompt before booting the kernel > > or > > stored in /boot/loader.conf. Many of these tunables also have a > > matching > > sysctl(8) entry for access after boot. > > ... > > hint.acpi.0.disabled > > Set this to 1 to disable all of ACPI. If ACPI has been > > disabled > > on your system due to a blacklist entry for your BIOS, you > > can > > set this to 0 to re-enable ACPI for testing. > > ... > > ------------- > > > > > > > > In 'man loader' it says: > > ------------- > > acpi_load > > Unset this to disable automatic loading of the ACPI module. > > See also hint.acpi.0.disabled in device.hints(5). > > ------------- > > > > In 'man device.hints' > > ------------- > > The following example disables the ACPI driver: > > > > hint.acpi.0.disabled="1" > > ------------- > > > > http://www.freebsd.org/doc/en/articles/laptop/article.html page also > > states that it should be in device.hints. > > > > > > Well, these are the ones I have found. There are a lot of misconfusion in > > various forums what to put where and how its done. Maybe its accurate on > > both places, but then that should be noted somewhere. > > > > /Bjorn > > > I was told that there's no difference between loader.conf and > device.hints, so you can place this option in either file
This is sort of correct. Hints may be placed in either place with the same results. But there is a difference on how the files, themselves are handled. /boot/loader.conf is never touched by a FreeBSD update, even for major versions. /boot/device.hints is subject to modification between versions. It is not automatically updated, but a new version is included in the /sys/ARCH/conf directory and an update may be required as drivers change. This will delete any custom hints. (E.g. The sio to uart transition on 8.0.) This is why I generally but any hints that really need to survive in /boot/loader.conf. (In my case, I have to disable APIC on my laptop.) -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: ober...@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
