Hi everybody, I've just bought a thinkpad T420s and I love it. The only issue I have at the moment is with the fan control and the thermal management. In particular I have no /proc/acpi/imb/thermal and no /proc/acpi/ibm/ecdump (even with experimental=1). What I see is only: [root@alessandro-thinky alessandro]# ls /proc/acpi/ibm/ beep bluetooth cmos driver fan hotkey led light video volume Other info from dmesg is: [root@alessandro-thinky alessandro]# dmesg | grep think thinkpad_acpi: ThinkPad BIOS 8CET28WW (1.05 ), EC unknown thinkpad_acpi: Lenovo ThinkPad T420s, model 417032U thinkpad_acpi: detected a 8-level brightness capable ThinkPad thinkpad_acpi: radio switch found; radios are enabled thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked Registered led device: tpacpi::thinklight Registered led device: tpacpi::thinkvantage thinkpad_acpi: Standard ACPI backlight interface available, not loading native one. thinkpad_acpi: Console audio control enabled, mode: monitor (read only) input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input11 Finally, sensors reports: [root@alessandro-thinky alessandro]# sensors thinkpad-isa-0000 Adapter: ISA adapter fan1: 3092 RPM coretemp-isa-0000 Adapter: ISA adapter Core 0: +44.0°C (high = +86.0°C, crit = +100.0°C) coretemp-isa-0002 Adapter: ISA adapter Core 1: +43.0°C (high = +86.0°C, crit = +100.0°C) acpitz-virtual-0 Adapter: Virtual device temp1: +44.0°C (crit = +97.0°C) I am also seeing rather high fan speeds. If the laptop is left idle the fan spins continuously (at low speed, but it still spins, even if the laptop is really cool). The fan starts spinning faster upon intensive tasks, as expected, however when the task finishes (e.g. compiling kernel finishes), it takes ages before the fan returs to spin slower. From /proc/acpi/ibm/fan the average spinning speed is around 4000 RPM. Nothing changes if I enable fan_control=1. Is this expected? Should I provide more information and if yes how? Should I write a fan control script based on the values reported by sensors instead of relying on /proc/acpi/ibm/fan ? If it helps I'm on archlinux, with stock 2.6.38.3 kernel for x86_64. Thanks very much, Alessandro PS: I've sent an email to the list 10 days ago but it is not showing up (I wasn't subscribed). This is an unpdated one, but I think nobody got the former. If you already received the first mail I'm sorry for the additional noise. ------------------------------------------------------------------------------ Fulfilling the Lean Software Promise Lean software platforms are now widely adopted and the benefits have been demonstrated beyond question. Learn why your peers are replacing JEE containers with lightweight application servers - and what you can gain from the move. http://p.sf.net/sfu/vmware-sfemails _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
