Mircea Bardac pisze: > Hi all, > > I'm currently running kernel 2.6.21.3 on a HP nx6325. > > I like having in the taskbar information about cpu/mem/temperature/etc. I > found a strange behaviour monitoring the ACPI provided temperature. It > currently shows for example 48C constantly, for lots of minutes. > > Doing a: dd if=/dev/urandom of=/dev/null increases the CPU usage and > temperature should increase too. The ACPI temperature stays the same though. > > I have also loaded the lm_sensors modules which, after some monitoring, appear > to be working right, meaning "it shows an increasing temperature if the CPU > usage increases". > > # cat /proc/acpi/thermal_zone/TZ1/temperature && sensors > temperature: 48 C > k8temp-pci-00c3 > Adapter: PCI adapter > Core0 Temp: > +54°C > Core1 Temp: > +53°C > > > The ACPI temperature increases only when the trip-point is reached. I hear the > fans starting. When the fans stop, the temperature drops "hard" to the > previous value. > > I've changed the polling frequency to 1: > # cat /proc/acpi/thermal_zone/TZ1/polling_frequency > polling frequency: 1 seconds > > I got the same effect: I can't see the temperature change dynamically, degree > by degree. Also, in a test, the sensor went up to 60-65C and the trip-point > did't activate. This was with polling set to 1. > Similar on nx6310. Sometimes when I turn on laptop when CPU temperature (first thermal zone - TZ0) is above 1st trip point the fan doesn't turn on now, but only when second trip point was reached. -- Maciej Rutecki http://www.maciek.unixy.pl
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