base_frequency will only exist if the HWP feature is enabled in the processor, i.e there is a 'hwp' in the flags of /proc/cpuinfo.
Refer to https://www.kernel.org/doc/html/v5.0/admin- guide/pm/intel_pstate.html ** Changed in: linux-hwe-5.15 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-5.15 in Ubuntu. https://bugs.launchpad.net/bugs/1983574 Title: /sys/devices/system/cpu/cpufreq/policy0/base_frequency is missing for Intel(R) Core(TM) i7-4785T CPU @ 2.20GHz Status in linux-hwe-5.15 package in Ubuntu: Invalid Bug description: 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu $ lsb_release -rd Description: Ubuntu 20.04.4 LTS Release: 20.04 2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center $ apt-cache policy linux-image-5.15.0-43-generic linux-image-5.15.0-43-generic: Installed: 5.15.0-43.46~20.04.1 Candidate: 5.15.0-43.46~20.04.1 Version table: *** 5.15.0-43.46~20.04.1 500 500 http://mirror01.idc.hinet.net/ubuntu focal-updates/main amd64 Packages 500 http://mirror01.idc.hinet.net/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 3) What you expected to happen /sys/devices/system/cpu/cpufreq/policy0/base_frequency should exist. 4) What happened instead /sys/devices/system/cpu/cpufreq/policy0/base_frequency doesn't exist. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2019-09-22 (1047 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) Package: linux-image-5.15.0-43-generic 5.15.0-43.46~20.04.1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.15.0-43.46~20.04.1-generic 5.15.39 Tags: focal Uname: Linux 5.15.0-43-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-04-20 (836 days ago) UserGroups: adm cdrom dip docker libvirt lpadmin lxd microk8s plugdev sambashare sbuild sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.15/+bug/1983574/+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
