Difference between revisions of "Talk:How to control fan speed"
(Adding Z61m Fan speeds in Discussionarea. Please add to the List.) |
Eismcsquare (Talk | contribs) m (New section: disengaged mode reset automatically) |
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(perhaps this table helps a little bit.) | (perhaps this table helps a little bit.) | ||
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| + | == disengaged mode reset automatically == | ||
| + | |||
| + | For some reason, whenever I issue command echo level disengaged > /proc/acpi/ibm/fan, the mode is reset to auto ("by hardware") in few seconds. | ||
| + | |||
| + | Thinkpad T60 | ||
| + | Ubuntu Gutsy | ||
| + | |||
| + | root@Thinkbaby-Ubuntu:~# uname -a | ||
| + | Linux Thinkbaby-Ubuntu 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux | ||
| + | |||
| + | I have also added "options thinkpad_acpi fan_control=1" to /etc/modprobe.d/options. | ||
| + | |||
| + | Any idea? | ||
Revision as of 03:18, 12 June 2008
Z61m is the same like Z60.
The kernel 2.6.18 ibm_acpi 1.12a does not allow speed command. but with direct ecdump it works. the displayed fan speed changes. (But i dont notice any noise difference)
On Z61m and Kenrel and unpatched ibm_acpi from 2.6.18: on Start the Fan is disabled :( speed 0. with echo enable > fan the fan goes to maximum rpm of 2400. (Temperatur goes above 78°C .. Bad)
On Full CPU Duty: Mode RPM 0 0 (fast switch) 1 2257 (slow switch, 5-10s) 2 2257 3 2664 (fast switch) 4 2699-2719 5 2800 6 3400 7 3284 (100%load cpu temp 68°C) 8-F same as 7 0x8F 2600 !! 0xFF speed is not chaning anymore ? (not measurement ?) 0xCF 4200 (very slow chaning.. 30s for spin up)
(perhaps this table helps a little bit.)
disengaged mode reset automatically
For some reason, whenever I issue command echo level disengaged > /proc/acpi/ibm/fan, the mode is reset to auto ("by hardware") in few seconds.
Thinkpad T60 Ubuntu Gutsy
root@Thinkbaby-Ubuntu:~# uname -a Linux Thinkbaby-Ubuntu 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux
I have also added "options thinkpad_acpi fan_control=1" to /etc/modprobe.d/options.
Any idea?
