I have noticed that disabling cpu frequency scaling doesn't matter too much on my core 2 duo processor. On normal usage the temperature is 50° with fixed 1.66mhz and tz4=30 (fan speed), and 45° using cpufreq-ondemand (tz4=30). This is not a big difference... 2007/1/29, Pieter De Wit <Pieter.DeWit@xxxxxxxxxxxxx>:
Hi Guys, I tried the suggestion below and it didn't seem to change anything - I even set the same trip points to TZ1. The fans still seem to spin faster in Linux compared to Windows. Then the other issue is that I can't switch a fan off once I force it on. Thanks, Pieter Show: cat /proc/acpi/thermal_zone/TZ0/trip_points or change TZ0 to TZ1 For many HP notebooks first trip point is to low. To change manually, for example: echo "105:100:100:78:70:60:50" > /proc/acpi/thermal_zone/TZ0/trip_points echo 10 > /proc/acpi/thermal_zone/TZ0/polling_frequency Then I have: maciek@rutek:~$ cat /proc/acpi/thermal_zone/TZ0/trip_points critical (S5): 105 C active[0]: 78 C: devices=0xcf7aea40 active[1]: 70 C: devices=0xcf7ae9dc active[2]: 60 C: devices=0xcf7ae98c active[3]: 50 C: devices=0xcf7ae93c maciek@rutek:~$ cat /proc/acpi/thermal_zone/TZ0/polling_frequency polling frequency: 10 seconds -- Maciej Rutecki <maciej.rutecki@xxxxxxxxx> http://www.unixy.pl LTG - Linux Testers Group (http://www.stardust.webpages.pl/ltg/wiki/) "This e-mail is sent on the Terms and Conditions that can be accessed by Clicking on this link http://www.vodacom.co.za/legal/email.jsp " - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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