On Sun, May 6, 2012 at 7:06 PM, Henrique de Moraes Holschuh <hmh@xxxxxxxxxx> wrote: > On Wed, 02 May 2012, r ll wrote: >> most of time the fan is working well, but usually every night I close the laptop >> let the Linux suspend; then resume on next morning, occasionally the laptop >> could become very hot, usually above 90℃ for long time, if I compile something >> or do some heavy work, it may go up over 128℃ then machine >> automatically shutdown, >> >> # cat /sys/devices/platform/thinkpad_hwmon/temp1_input >> 97000 >> # cat /sys/devices/platform/thinkpad_hwmon/fan1_input >> 65535 > > "-1" (reported as 65535) *is* the standard ThinkPad EC lingo for "not > available". Getting this in the tachometer is really weird, but > actually useful :p It is also the first time I've ever heard of this. > > Change your kernel to disable thinkpad-acpi fan control, i.e. make > *sure* thinkpad_acpi is always loaded with fan_control=0, even at the > first time it is loaded. You might need to mess with /etc/modprobe.d, > and maybe even update your initramfs. Once boot, I see it's "N", is it not enough to make sure? I always compile in the hdd drivers and filesystem code for root, so not using an initramfs; this thinkpad_acpi module is just loaded automatically by some init script, and my /etc/modprobe.d is empty, I'm using modprobe by kmod 7-2; $ cat /sys/module/thinkpad_acpi/parameters/fan_control N $ cat /sys/devices/platform/thinkpad_hwmon/fan1_input 3578 $ pacman -Q |grep kmod kmod 7-2 > > Run it like that for a while, so that you can access whether the problem > went away or not. Let's find out whether it is thinkpad-acpi or > something else that is getting the EC pissed off :-) > >> I tried unload & reload the kernel module but it still doesn't work; >> I tried manually set a speed level but it's still 65535, the machine >> is still hot > > So, whatever it is, it makes the EC ignore fan control commands. > > Are you using the "fan" ACPI module? Do you mean this CONFIG_ACPI_FAN ? I found it's Y, but I can try disable it; but do you think it's conflict with thinkpad_acpi fan ? $ grep -i fan /boot/config CONFIG_ACPI_FAN=y > > -- > "One disk to rule them all, One disk to find them. One disk to bring > them all and in the darkness grind them. In the Land of Redmond > where the shadows lie." -- The Silicon Valley Tarot > Henrique Holschuh -- Cheng Renquan (程任全) -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
