>From my understanding, I can see that thermald is detecting the passive trip point temperature being reached at 75 degrees C and then it attempts to move to cpufreq index position 3; so it seems to be trying to do some passive CPU frequency switching.
Sensor hwmon :temp 76000 update_set_point 76000,0,98000 pref 0 type 1 temp 76000 trip 99000 Passive Trip point applicable Trip point applicable < 0:99000 cdev size for this trippoint 2 cdev at index 0:Processor Need to switch to next cdev cdev at index 3:cpufreq Need to switch to next cdev pref 0 type 2 temp 76000 trip 95000 Passive Trip point applicable Trip point applicable < 1:95000 cdev size for this trippoint 2 cdev at index 0:Processor Need to switch to next cdev cdev at index 3:cpufreq Need to switch to next cdev What is really interesting is that your firmware is configured to do passive (e.g. non-fan) cooling strategies at 75 degrees C. In the earlier analysis we saw that even at 20% CPU load your machine is close to this temperature. So, we can conclude that slightly busy CPU already into the thermal danger zone and informing the OS to start attempting passive cooling strategies. Key facts we can draw from this: At 20% utilization your machine is already moving into the zone where the designers of the machine believe that fan control is not sufficient and hence is triggering passive cooling strategies. That really tells me that your machine is having some cooling issues between the CPU and the fan. This implies that one should check that there is sufficient thermal paste between the CPU and the heat pipe. -- 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/1491797 Title: Shuts down when supposed to suspend as a reaction to self-caused overheat, session lost Status in linux package in Ubuntu: In Progress Bug description: Error: Kernel foolishly shuts down the computer when it overheats. /var/log/kern.log W500 kernel: [1448.648529] thermal thermal_zone1: critical temperature reached (100 C), shutting down Consequence: Shutting down destroys session in Ubuntu, Gnome, and all applications that can't remember their latest conscious state (most applications). Attempted repair, failed: Laptop has suspending ability, but I can't find the setting for the kernel to make the computer suspend instead of shutting down. Repair suggestions: 1. Persistence of session, so that everything would reappear after the restart. (this would also make updating less disruptive) 2. Do not heat the machine like crazy; speed up fans or slow down processes. (problematic Lenovo Thinkpad W500 fan on low speed right up to the fiery end) 3. Put the computer to suspend when it's too hot. (The problem has remained the same from at least Ubuntu 11.10 through 14.04) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-62-generic 3.13.0-62.102 ProcVersionSignature: Ubuntu 3.13.0-62.102-generic 3.13.11-ckt24 Uname: Linux 3.13.0-62-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.12 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: user 2171 F.... pulseaudio CurrentDesktop: Unity Date: Thu Sep 3 13:42:28 2015 HibernationDevice: RESUME=UUID=991e1383-ff5b-46c1-84c4-c904e1d81256 InstallationDate: Installed on 2013-12-29 (612 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO 4063B22 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-62-generic root=UUID=bd426989-b545-41b3-97b8-de9410f27aa6 ro persistent quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-62-generic N/A linux-backports-modules-3.13.0-62-generic N/A linux-firmware 1.127.15 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-04-27 (494 days ago) dmi.bios.date: 12/14/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 6FET92WW (3.22 ) dmi.board.name: 4063B22 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:bvr6FET92WW(3.22):bd12/14/2011:svnLENOVO:pn4063B22:pvrThinkPadW500:rvnLENOVO:rn4063B22:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4063B22 dmi.product.version: ThinkPad W500 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1491797/+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
