I can confirm overheating on HP ZBook 17 G6/860C, BIOS R92 Ver. 01.05.04 06/03/2020 with Ubuntu 5.4.0-84.94-generic kernel.
The problem occurs because of commit: --- thermal/drivers/int340x/processor_thermal: Fix tcc setting BugLink: https://bugs.launchpad.net/bugs/1938713 commit fe6a6de6692e7f7159c1ff42b07ecd737df712b4 upstream. The following fixes are done for tcc sysfs interface: - TCC is 6 bits only from bit 29-24 - TCC of 0 is valid - When BIT(31) is set, this register is read only - Check for invalid tcc value - Error for negative values --- diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c index 89a0153..576523d 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c @@ -150,24 +150,27 @@ static ssize_t tcc_offset_degree_celsius_show(struct device *dev, if (err) return err; - val = (val >> 24) & 0xff; + val = (val >> 24) & 0x3f; return sprintf(buf, "%d\n", (int)val); } -static int tcc_offset_update(int tcc) +static int tcc_offset_update(unsigned int tcc) { u64 val; int err; - if (!tcc) + if (tcc > 63) return -EINVAL; Previous version ignored tcc==0, now it is valid value! In my case during boot Ubuntu execute tcc_offset_update(0). Previous version ignored this value and (I suppose) it used value set by BIOS (in my case 2). When CPUs are fully loaded (for example when compiling kernel) my laptop is shutting down immediately to prevent overheating (on 5.4.0-81-generic works fine). It can be fixed manually by: echo 2 | sudo tee /sys/devices/pci0000:00/0000:00:04.0/tcc_offset_degree_celsius -- 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/1943103 Title: Kernel 5.4.0-84 Graphical Issues and Overheating Status in linux package in Ubuntu: Confirmed Bug description: > Windows are glitchy and laptop is overheating. cat /proc/version_signature: Ubuntu 5.4.0-84.94-generic 5.4.133 sudo lspci -vnvn: [Log Attached] --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: knj 6145 F.... pulseaudio CasperMD5CheckResult: skip DistroRelease: Linux Mint 20.2 InstallationDate: Installed on 2021-08-16 (24 days ago) InstallationMedia: Linux Mint 20.2 "Uma" - Release amd64 20210703 MachineType: LENOVO 82A1 NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: LANGUAGE=en_PH:en TERM=xterm-256color PATH=(custom, no user) LANG=en_PH.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-84-generic root=UUID=bf191557-7167-4211-a91d-d9ef3b7412f1 ro quiet splash ProcVersionSignature: Ubuntu 5.4.0-84.94-generic 5.4.133 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.4.0-84-generic N/A linux-backports-modules-5.4.0-84-generic N/A linux-firmware 1.187.16 Tags: uma Uname: Linux 5.4.0-84-generic x86_64 UnreportableReason: This report is about a package that is not installed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: N/A _MarkForUpload: False dmi.bios.date: 01/14/2021 dmi.bios.vendor: LENOVO dmi.bios.version: DHCN31WW dmi.board.asset.tag: ��������������� dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: ��������������� dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Yoga Slim 7 14IIL05 dmi.modalias: dmi:bvnLENOVO:bvrDHCN31WW:bd01/14/2021:svnLENOVO:pn82A1:pvrYogaSlim714IIL05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrYogaSlim714IIL05: dmi.product.family: Yoga Slim 7 14IIL05 dmi.product.name: 82A1 dmi.product.sku: LENOVO_MT_82A1_BU_idea_FM_Yoga Slim 7 14IIL05 dmi.product.version: Yoga Slim 7 14IIL05 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1943103/+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
