| 1 |
Am Samstag 30 September 2006 14:16 schrieb reader@×××××××.com: |
| 2 |
> Group, I recently built a ventilated stucture around my 4 desktops to |
| 3 |
> try to quiet things down and get rid of the heat. |
| 4 |
> |
| 5 |
> I made no provision for forced shutdown in case of overheat, which is |
| 6 |
> quite likely to happen if, for example the main ventilation fan went |
| 7 |
> down for some reason. |
| 8 |
> |
| 9 |
> Well, that happened due to stupidity on my part with getting used to |
| 10 |
> the new setup. I fired up a computer and neglected to turn the fan |
| 11 |
> on. Then left it running overnight. |
| 12 |
> |
| 13 |
> Well, given the confined space and very little/no ventilation (of my |
| 14 |
> homemade structure) the computer got hot... |
| 15 |
> |
| 16 |
> Sometime this morning I see syslog messages written to tty that say: |
| 17 |
> |
| 18 |
> Message from syslogd@reader at Sat Sep 30 04:41:32 2006 ... |
| 19 |
> reader kernel: CPU0: Temperature above threshold |
| 20 |
> |
| 21 |
> Message from syslogd@reader at Sat Sep 30 04:41:32 2006 ... |
| 22 |
> reader kernel: CPU0: Running in modulated clock mode |
| 23 |
> |
| 24 |
> [...] |
| 25 |
> |
| 26 |
> Some kind of attempt by kernel to cool things down. But will it |
| 27 |
> actually shutdown if it gets dangerously hot? |
| 28 |
> |
| 29 |
> Further, how can I discover what temperatures were involved when this |
| 30 |
> happened? |
| 31 |
> |
| 32 |
> Or can I set something to make a shutdown happen at a specific |
| 33 |
> temperature? |
| 34 |
> |
| 35 |
> A nicer solution would be somekind of added stand alone temperature |
| 36 |
> monitor in the enclosure that causes a controlled shutdown like one |
| 37 |
> gets with `shutdown -h now'. |
| 38 |
> |
| 39 |
> Anyone here with some experience in this kind of thing that can steer me |
| 40 |
> to some good information? |
| 41 |
|
| 42 |
Just have a look to your trip_point: |
| 43 |
|
| 44 |
mgisbers@mars ~ $ cat /proc/acpi/thermal_zone/THRM/trip_points |
| 45 |
critical (S5): 95 C |
| 46 |
passive: 87 C: tc1=1 tc2=5 tsp=10 devices=0xdff72dc4 |
| 47 |
|
| 48 |
When reaching 95° my computer starts to shutdown fast. |
| 49 |
|
| 50 |
I found more Information on |
| 51 |
http://acpi.sourceforge.net/documentation/thermal.html |
| 52 |
|
| 53 |
Maybe it helps you too. |
| 54 |
-- |
| 55 |
Michael Gisbers |
| 56 |
http://www.lugor.de |
Archives