Update from email: Intel_pstate driver is part of CPU performance scaling system which is focus on performance scaling. (https://01.org/linuxgraphics/gfx-docs/drm/admin-guide/pm/cpufreq.html) And the Linux kernel supports CPU performance scaling by means of the CPUFreq (CPU Frequency scaling) subsystem that consists of three layers of code: the core, scaling governors and scaling drivers(intel_pstate).
Intel_idle driver is for CPU idle time management. (https://01.org/linuxgraphics/gfx-docs/drm/admin-guide/pm/intel_idle.html?highlight=intel_idle) It is the default CPU idle time management driver for the Nehalem and later generations of Intel processors IceLake support Intel_pstate. Currently Intel_pstate is platform independent, not special code of ICX. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1951941 Title: Icelake cpus are not showing intel_pstate support on 20.04, 20.10, 21.04, 21.10 (ga & hwe kernels) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1951941/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
