ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: alextu 2205 F...m pulseaudio /dev/snd/controlC0: alextu 2205 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2019-07-20 (2 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) MachineType: Dell Inc. XPS 13 9380 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-1045-oem root=UUID=77efb06b-1ce6-4749-a131-67f57aa8b21b ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-1045.50-oem 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-1045-oem N/A linux-backports-modules-4.15.0-1045-oem N/A linux-firmware 1.173.9 Tags: bionic Uname: Linux 4.15.0-1045-oem x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: sudo WifiSyslog: _MarkForUpload: True dmi.bios.date: 03/29/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.3.2 dmi.board.name: 0KTW76 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.3.2:bd03/29/2019:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn0KTW76:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9380 dmi.sys.vendor: Dell Inc.
** Tags added: bionic -- 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/1781924 Title: Kernel wrong temperature reporting Status in OEM Priority Project: New Status in linux package in Ubuntu: Expired Bug description: I'm having some thermal trouble since I've started using kernel >4.0.x with my new laptop. According to psensor and sensord, CPU temperature jumps above the 90C, stays there for around 1second, and goes back to 50C. All transitions happen in around 100ms. I've cleaned and re- applied thermal paste and checked the connections twice. More interestingly, this doesn't happen when the CPU is under heavy-load, but when it is waiting idly. Sometimes sensord reports the CPU temp has gone over the critical threshold of the CPU and device shuts down itself immediately. There is also Windows 10 installed as a dual boot and didn't see this problem on it when idle or under heavy load. Dmesg output is full of following warnings; [ 1282.296247] CPU0: Core temperature above threshold, cpu clock throttled (total events = 109)[ 1282.296267] CPU4: Core temperature above threshold, cpu clock throttled (total events = 109) [ 1282.296269] CPU5: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296269] CPU1: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296271] CPU4: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296272] CPU6: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296273] CPU2: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296274] CPU7: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296275] CPU3: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.296281] CPU0: Package temperature above threshold, cpu clock throttled (total events = 220) [ 1282.297226] CPU4: Core temperature/speed normal [ 1282.297227] CPU5: Package temperature/speed normal [ 1282.297228] CPU0: Core temperature/speed normal [ 1282.297229] CPU1: Package temperature/speed normal [ 1282.297229] CPU0: Package temperature/speed normal [ 1282.297230] CPU4: Package temperature/speed normal [ 1282.297233] CPU3: Package temperature/speed normal [ 1282.297233] CPU7: Package temperature/speed normal [ 1282.297269] CPU2: Package temperature/speed normal [ 1282.297269] CPU6: Package temperature/speed normal Because of wrong temperature reporting, kernel throttles the CPU and reduces overall performance, which results in frustrating user experience. I've tried followings and find a temporary solution; - intel_pstate enabled, turbo-boost enabled > problem exists - intel_pstate enabled, turbo-boost disabled > problem frequency reduced - intel_pstate disabled, governor set to anythig other than powersave > problem exists - intel_pstate disabled, governor set to powersave > problem frequency reduced I'm suspicious about a kernel bug such as; - https://bugzilla.redhat.com/show_bug.cgi?id=924570 - https://bugzilla.redhat.com/show_bug.cgi?id=1317190 --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D7p: burak 1547 F...m pulseaudio /dev/snd/controlC0: burak 1547 F.... pulseaudio CurrentDesktop: X-Cinnamon DistroRelease: Linux Mint 19 HibernationDevice: RESUME=UUID=60a9fd7e-ec69-448a-b19a-93efaa6035ed Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 04f3:0903 Elan Microelectronics Corp. Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bus 001 Device 002: ID 045e:07a5 Microsoft Corp. Wireless Receiver 1461C Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. UX430UNR NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-24-generic root=UUID=692de7fe-530f-4849-89ec-a5b4413af7dc ro quiet splash intel_pstate=disable vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-24-generic N/A linux-backports-modules-4.15.0-24-generic N/A linux-firmware 1.173.1 Tags: tara Uname: Linux 4.15.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 11/28/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX430UNR.302 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX430UNR dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX430UNR.302:bd11/28/2017:svnASUSTeKCOMPUTERINC.:pnUX430UNR:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX430UNR:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: UX dmi.product.name: UX430UNR dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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