The obvious next question is, is anyone backporting this to the s10
kernel patch?
alan.
Dana H. Myers wrote:
[EMAIL PROTECTED] wrote:
BTW: thermal zone handling was introduced in Nevada build 40 as part of:
6363985 acpica: Metropolis SMB Alerts result in high background system load
Metropolis, of course, is the W2100z
(The "thermal" event can happen in overtemp conditions and some
other conditions; if the _TMP method is never evaluated the event is
never cleared)
Just to clarify this a bit; CR 6363985 occurs as a result of
oddly-written BIOS code and generally has nothing to do with an
actual over-temperature condition. Some revisions of the Metropolis
BIOS configure the on-board voltage/temperature/fan-speed monitor
chip to report an alert if any of these conditions stray outside
a specified range; transient power supply variations trigger an
alert which looks like an over-temperature condition.
The problem is that the BIOS is written oddly; it depends on
a thermal zone monitor to deliver the alert to the BIOS. This
has nothing to do with temperature. Adding a thermal zone monitor
to Solaris solves 6363985 as a side-effect.
In fact, the fans in Metropolis are under hardware control and
operate completely independently of the thermal zone monitor. I
ran an experiment in which I covered all the vents on a Metropolis
cabinet and loaded the CPUs, attempting to overheat it, and I could
not.
What I did discover is that the BIOS will filter-out transient
voltage-range events; if something is actually wrong, the BIOS
will log a DMI event. The next time you get a chance to reboot
the system, I'd suggest looking in the DMI event log and see
if there BIOS has logged any related messages.
Dana
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Alan Hargreaves - http://blogs.sun.com/tpenta
Staff Engineer (Kernel/VOSJEC/Performance)
Product Technical Support (APAC)
Sun Microsystems
I went in the World's Greatest shave for Leukaemia. See
http://blogs.sun.com/roller/page/tpenta?entry=hair_yesterday_gone_today
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