I know it is long time since this was opened, however herewith I want to declare that this problem still exists nowadays in all Thinkpad line and it is not related to Linux.
From all what I have learned so far there is only one conclusion: Lenovo is gapping its fans to keep their products at low noise intentionally with the penalty of lower performance. This problem is getting annoying as more powerful a CPU is as it needs more cooling. No Linux OS is controlling the fans by default and it is obvious it is not Ubuntu or any other fault. It is simply Lenovo is hindering any OS to use higher fan speeds. JFYI in my situation the maximum disengaged fan in a Thinkpad Extreme is about 7800 rpm, however highest auto level is at 4800 rpm. thinkpad_acpi is offering level 7 max which equals to this 4800 rpm. Please note thinkpad_acpi is depending on registers which only offer levels but no fixed speed. For me personally this is a bad design decision and will go into the equation of vendor choice for the next purchase but who cares. PS: As a last there is a pulse setup thinkable which keeps the desired fan rpm at a certain level by alternating between full and highest, but this is a far off topic here. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/751689 Title: [Lenovo Thinkpad x201s] Overheat due to slow fans when on 'auto' Status in linux package in Ubuntu: Fix Released Status in linux source package in Maverick: Won't Fix Status in linux source package in Natty: Won't Fix Status in linux source package in Precise: Won't Fix Status in thinkfan package in Debian: Fix Released Status in linux package in Fedora: Won't Fix Bug description: On my Thinkpad x201s with an i7, if I utilize all of the CPUs/hyperthreads, the machine can be made to overheat very quickly. This is because of the default level setting of 'auto' in /proc/acpi/ibm/fan. On 'auto', the fan only ever goes up to around 4500rpm, while in 'disengaged' mode it can go as high as 6400rpm. At 4500rpm, the CPU continues to climb until the system is forcibly shutdown at 100C. If I reload thinkpad_acpi like so: $ sudo rmmod thinkpad_acpi $ sudo modprobe thinkpad_acpi fan_control=1 Then I can set the fan to disengaged mode manually: echo "level disengaged" > /proc/acpi/ibm/fan With this setting, I can utilize all of the CPUs for an extended time and not surpass 85C, still pretty hot but well under the 100C range. Furthermore, setting to level '7' (the supposed max fan speed) runs the fan at ~5300, well below the maximum fan speed. In maverick this did not seem to be as much of a problem (perhaps because of the lack of the big kernel lock in natty?). Related bugs: https://bugzilla.redhat.com/show_bug.cgi?id=675433 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610722 (against thinkfan package, but demonstrates that other x201 users are having the same problem) ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-7-generic 2.6.38-7.39 Regression: Yes Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38 Uname: Linux 2.6.38-7-generic x86_64 AcpiTables: Error: command ['gksu', '-D', 'Apport', '--', '/usr/share/apport/dump_acpi_tables.py'] failed with exit code 1: GNOME_SUDO_PASS Sorry, try again. sudo: 3 incorrect password attempts AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jamie 2641 F.... pulseaudio /dev/snd/pcmC0D0p: jamie 2641 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf2520000 irq 43' Mixer name : 'Intel IbexPeak HDMI' Components : 'HDA:14f15069,17aa2156,00100302 HDA:80862804,17aa21b5,00100000' Controls : 12 Simple ctrls : 6 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6QHT28WW-1.09' Mixer name : 'ThinkPad EC 6QHT28WW-1.09' Components : '' Controls : 1 Simple ctrls : 1 Card29.Amixer.values: Simple mixer control 'Console',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Tue Apr 5 11:56:28 2011 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=58280e6e-d161-43ea-8593-a89fb7b6851a InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1) MachineType: LENOVO 5129CTO ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=82571cfb-fdda-4d2f-b708-f8924aa0fe21 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-7-generic N/A linux-backports-modules-2.6.38-7-generic N/A linux-firmware 1.49 SourcePackage: linux UpgradeStatus: Upgraded to natty on 2011-02-24 (39 days ago) dmi.bios.date: 04/20/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 6QET44WW (1.14 ) dmi.board.name: 5129CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6QET44WW(1.14):bd04/20/2010:svnLENOVO:pn5129CTO:pvrThinkPadX201s:rvnLENOVO:rn5129CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 5129CTO dmi.product.version: ThinkPad X201s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/751689/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
