After moving my old laptop around I got home, booted it and got a very
distressing message:
messages.2.gz:Jun 14 22:40:09 hopek /bsd: acpitz2: Critical temperature
4938C (52112K), shutting down
Perhaps some dust moved around, or a cable disconnected.
Unfortunately, the system shut down before it booted. I booted bsd.rd,
read some manpages and booted with -c 'disable acpitz' - everything
worked fine. I attach a diff to only shutdown if the temperature is
below 2000C. If it's above then it's too late to shut down anyway :)
BTW, for no apparent reason my laptop started working fine again.
Index: acpitz.c
===================================================================
RCS file: /cvs/src/sys/dev/acpi/acpitz.c,v
retrieving revision 1.43
diff -u -r1.43 acpitz.c
--- acpitz.c 15 Jun 2011 00:15:54 -0000 1.43
+++ acpitz.c 16 Jun 2011 15:09:14 -0000
@@ -326,11 +326,17 @@
}
/* critical trip points */
if (sc->sc_crt != -1 && sc->sc_crt <= sc->sc_tmp) {
- /* do critical shutdown */
- printf("%s: critical temperature exceeded %dC (%dK), shutting "
- "down\n",
- DEVNAME(sc), KTOC(sc->sc_tmp), sc->sc_tmp);
- psignal(initproc, SIGUSR2);
+ if (KTOC(sc->sc_tmp) > 2000) {
+ printf("%s: absurdly high temperature %dC (%dK), "
+ "doing nothing\n",
+ DEVNAME(sc), KTOC(sc->sc_tmp), sc->sc_tmp);
+ } else {
+ /* do critical shutdown */
+ printf("%s: critical temperature exceeded %dC (%dK), "
+ "shutting down\n",
+ DEVNAME(sc), KTOC(sc->sc_tmp), sc->sc_tmp);
+ psignal(initproc, SIGUSR2);
+ }
}
if (sc->sc_hot != -1 && sc->sc_hot <= sc->sc_tmp) {
printf("%s: _HOT temperature\n", DEVNAME(sc));
--
Michal Mazurek
