Kernel 5.8 lsmod, lscpic, dmesg, sensors output ** Attachment added: "Kernel 5.8 lsmod, lscpic, dmesg, sensors output" https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/+bug/1910562/+attachment/5450315/+files/kern_5.8.txt
** Description changed: - After updating via apt dist-upgrade from kernel 5.4.0-59 to kernel 5.8.0-3 the fan on my + After updating via apt dist-upgrade from kernel 5.4.0-59 to kernel 5.8.0-34 the fan on my machine started switching on (for an instant) and off every 10 seconds even when idle with CPU at 48/50°C. Switching back to previous kernel solves temporary the problem, i.e. fans are always off with light desktop work. The new behavior is really annoying and I guess not healthy for the fans. I'm on latest Dell bios, with every other package updated. Di something in the thermal policies change between those two kernels? Is it possible to go back to previous behavior ? Thanks in advance for help Machine: Dell Precison 7540, intel i7-9750 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.8.0-34-generic 5.8.0-34.37~20.04.2 ProcVersionSignature: Ubuntu 5.8.0-34.37~20.04.2-generic 5.8.18 Uname: Linux 5.8.0-34-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu Jan 7 17:14:54 2021 InstallationDate: Installed on 2020-05-06 (246 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) SourcePackage: linux-signed-hwe-5.8 UpgradeStatus: No upgrade log present (probably fresh install) ** Description changed: - After updating via apt dist-upgrade from kernel 5.4.0-59 to kernel 5.8.0-34 the fan on my - machine started switching on (for an instant) and off every 10 seconds even - when idle with CPU at 48/50°C. + After updating via apt dist-upgrade from kernel 5.4.0-59 to kernel + 5.8.0-34 the fan on my machine started switching on (for an instant) and + off every 10 seconds even when idle with CPU at 48/50°C. - Switching back to previous kernel solves temporary the problem, i.e. fans are always off - with light desktop work. + Switching back to previous kernel solves temporary the problem, i.e. + fans are always off with light desktop work. The new behavior is really annoying and I guess not healthy for the fans. I'm on latest Dell bios, with every other package updated. Di something in the thermal policies change between those two kernels? Is it possible to go back to previous behavior ? Thanks in advance for help Machine: Dell Precison 7540, intel i7-9750 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.8.0-34-generic 5.8.0-34.37~20.04.2 ProcVersionSignature: Ubuntu 5.8.0-34.37~20.04.2-generic 5.8.18 Uname: Linux 5.8.0-34-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu Jan 7 17:14:54 2021 InstallationDate: Installed on 2020-05-06 (246 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) SourcePackage: linux-signed-hwe-5.8 UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1910562 Title: Fans switching on and off every 10 seconds after update to kernel 5.8.0-34 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/+bug/1910562/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
