On Mon, Jan 16, 2006 at 11:51:39AM -0600, [EMAIL PROTECTED] wrote: > Some sysctl's can not be changed on a running system try reading the > defaults/loader.conf in /boot/ see if you can change the acpi thermal > setting in there if not just add those sysctl with a = 50C etc.. to > loader.conf and reboot
This didn't seem to work. I tried putting the following: hw.acpi.thermal.tz0._CRT=70 into both /boot/loader.conf and /etc/sysctl.conf to no avail (value remained at 60). Bob > > > > On Wed, Jun 22, 2005 at 01:52:22PM -0300, Matthew Flanagan wrote: > >> On 22 Jun 2005 11:46:31 -0400, Lowell Gilbert > >> <[EMAIL PROTECTED]> wrote: > >> > Matthew Flanagan <[EMAIL PROTECTED]> writes: > >> > > >> > > I`ve installed a FreeBSD 5.4-STABLE and I was building some ports > >> when > >> > > suddenly my system shut down. Upon rebooting it and checking > >> > > /var/log/messages, I found the following lines: > >> > > > >> > > Jun 21 16:01:30 bell root: WARNING: system temperature too high, > >> > > shutting down soon! > >> > > Jun 21 16:01:40 bell kernel: acpi_tz0: WARNING - current temperature > >> > > (60.0C) exceeds safe limits > >> > > > >> > > Then I realized what had happened. My acpi_thermal sysctl's are: > >> > > > >> > > hw.acpi.thermal.min_runtime: 0 > >> > > hw.acpi.thermal.polling_rate: 10 > >> > > hw.acpi.thermal.tz0.temperature: 50.0C > >> > > hw.acpi.thermal.tz0.active: 0 > >> > > hw.acpi.thermal.tz0.thermal_flags: 1 > >> > > hw.acpi.thermal.tz0._PSV: 50.0C > >> > > hw.acpi.thermal.tz0._HOT: -1 > >> > > hw.acpi.thermal.tz0._CRT: 60.0C > >> > > hw.acpi.thermal.tz0._ACx: 50.0C -1 -1 -1 -1 -1 -1 -1 -1 -1 > >> > > > >> > > When I try to raise hw.acpi.thermal.tz0._CRT to 85C (which is the > >> > threshold in > >> > > the BIOS setup) it doesn't work: > >> > > > >> > > bell# sysctl hw.acpi.thermal.tz0._CRT=3580 # 3580 tenths of > >> Kelvin=85C > >> > > sysctl: oid 'hw.acpi.thermal.tz0._CRT' is read only > >> > > > >> > > I've tried /etc/sysctl.conf as well, but I get the same error. > >> > > > >> > > Now, my question is: how do I change this value? I've read several > >> > manpages > >> > > (acpi(4), acpi_thermal(4), acpiconf(8), and many others) and checked > >> the > >> > > handbook, to no avail. Can anyone point me to the right direction? > >> > > >> > Can it be set at boot time? [from the loader?] > >> > >> Perhaps, but loader(8) lists the kernel tunable parameters available, > >> and > >> hw.acpi.thermal.tz%d._CRT isn't one of them. > > > > Did you ever discover a resolution to this? I have a Shuttle SN95G5 > > system that is doing the same thing. To make matters worse, it appears > > that the hw.acpi.thermal.tz0.temperature value that is being returned is > > 5 to 10 degrees higher than what BIOS thinks (I am inclined to believe > > the BIOS on this one). I can change the CPU fan speed settings in the > > BIOS. It has pretty extensive control of this, with the default setting > > of "SMART FAN" where it controls fan speed based on CPU temperature. > > Unfortunately, in that mode the hw.acpi.thermal.tz0.temperature slews to > > 60C (while BIOS reads below 50C) before the fan has sped up enough. I > > can also set the fan speed control to fixed, relatively higher values, > > but the fan noise is then bothersome. > > > > So, anyone know where the 60C value for hw.acpi.thermal.tz0._CRT is > > derived from and how to change it? > > > > Thanks, > > Bob > > > > > >> > >> Cheers, > >> Matt > >> _______________________________________________ > >> freebsd-questions@freebsd.org mailing list > >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions > >> To unsubscribe, send any mail to > >> "[EMAIL PROTECTED]" > > > > -- > > Bob Willcox Maintainer's Motto: > > [EMAIL PROTECTED] If we can't fix it, it ain't broke. > > Austin, TX > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to > > "[EMAIL PROTECTED]" > > > -- Bob Willcox Maintainer's Motto: [EMAIL PROTECTED] If we can't fix it, it ain't broke. Austin, TX _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
