On Thu, 2020-04-16 at 20:54 +0000, Anton Keks wrote: > No, normally it's below 60C. > > I can get it to 80C (and shutdown) when the AC is plugged in and > charging the battery and I load my CPU a lot at the same time. > > Usually it means a video conference with several people and charging > at > the same time. A little bit of sun also helps. > > So I guess the cooling mechanism here is not adequate, if thermald > tries > to do anything about it at all. I am attaching thermald debug log, if > it > helps. > > Also, I usually can avoid the shutdown if I manually reduce CPU > target > temperature to 70C using this tool: > https://github.com/erpalma/throttled > This results in very heavy CPU throttling well below 1GHz.
Not sure if you ran dptfxtract tool on this system. May be thermald is not doing anything because there is no target device. Thanks, Srinivas > > > ** Attachment added: "thermald debug log" > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873083/+attachment/5355770/+files/thermald.txt > -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to thermald in Ubuntu. https://bugs.launchpad.net/bugs/1873083 Title: Lenovo Yoga C940 frequently does thermal shutdown Status in linux package in Ubuntu: Incomplete Status in thermald package in Ubuntu: New Bug description: On a bit higher load and especially if Laptop is charging, very often Kernel does an emergency thermal shutdown. thermal thermal_zone3: critical temperature reached (80 C), shutting down It says 80 C, but sensors command shows that temperatures hovering close to 100C before the shutdown happens. dmesg is often also full of these (for each core): mce: CPU2: Core temperature above threshold, cpu clock throttled (total events = 246766) When I boot to Windows, it seems that CPU is throttled more aggressively on load and thermal shutdown doesn't happen with a similar load, but CPU frequencies drop to 1600 range, while in Ubuntu they are 2800 range. I would rather have more throttling that computer shutting down randomly without the ability to save work. Is there a workaround? ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-21-generic 5.4.0-21.25 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 ApportVersion: 2.20.11-0ubuntu24 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: anton 1874 F.... pulseaudio /dev/snd/pcmC0D0p: anton 1874 F...m pulseaudio /dev/snd/pcmC0D6c: anton 1874 F...m pulseaudio CurrentDesktop: ubuntu:GNOME Date: Wed Apr 15 23:54:21 2020 InstallationDate: Installed on 2019-11-29 (137 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: LENOVO 81Q9 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=24af2874-e109-44f9-a5b9-8a9ce34b3f0f ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-21-generic N/A linux-backports-modules-5.4.0-21-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-04-04 (11 days ago) dmi.bios.date: 01/09/2020 dmi.bios.vendor: LENOVO dmi.bios.version: AUCN54WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0R32862 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga C940-14IIL dmi.modalias: dmi:bvnLENOVO:bvrAUCN54WW:bd01/09/2020:svnLENOVO:pn81Q9:pvrLenovoYogaC940-14IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0R32862WIN:cvnLENOVO:ct31:cvrLenovoYogaC940-14IIL: dmi.product.family: Yoga C940-14IIL dmi.product.name: 81Q9 dmi.product.sku: LENOVO_MT_81Q9_BU_idea_FM_Yoga C940-14IIL dmi.product.version: Lenovo Yoga C940-14IIL dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873083/+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
