http://bugzilla.opensuse.org/show_bug.cgi?id=1172016 Bug ID: 1172016 Summary: Unchecked MSR access errors occur during Intel P-state driver initialization on Thinkpad T520 Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.2 Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: john.serock@gmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Created attachment 838077 --> http://bugzilla.opensuse.org/attachment.cgi?id=838077&action=edit dmesg output showing unchecked MSR access errors Overview: Unchecked MSR access errors occur when the Intel P-state driver is initializing during the boot process. cpufreq fails to initialize policies for the CPUs. Steps to Reproduce: 1) Download http://download.opensuse.org/distribution/leap/15.2/iso/openSUSE-Leap-15.2-D... 2) Create bootable USB stick using SUSE Studio Imagewriter 3) Copy autoinst-152-thinkpad.xml autoyast control file to root directory of second USB stick 4) Plug bootable USB stick into Thinkpad 5) Plug USB stick with autoyast control file into Thinkpad 6) Turn on Thinkpad and press F12 for boot menu 7) Boot from USB stick 8) When prompted press E to edit kernel parameters. 9) Add kernel parameters: ifcfg=eth0=dhcp4 autoyast=usb:///autoinst-152-thinkpad.xml 10) Press F10 to continue 11) Complete installation 12) Boot Thinkpad Actual Results: When initializing the Intel P-state driver, unchecked MSR access errors occur and the following messages are displayed during the boot process: cpufreq: cpufreq_online: Failed to initialize policy for cpu: 0 (-19) cpufreq: cpufreq_online: Failed to initialize policy for cpu: 1 (-19) cpufreq: cpufreq_online: Failed to initialize policy for cpu: 2 (-19) cpufreq: cpufreq_online: Failed to initialize policy for cpu: 3 (-19) cpufreq uses the acpi-cpufreq, instead of the intel_pstate, scaling driver. Expected Results: No unchecked MSR access errors occur when the Intel P-state driver is initializing. cpufreq uses the intel_pstate scaling driver. Build Date & Hardware: Leap 15.2 Build date: 18-May-2020 (Build 654.2) Hardware: Lenovo ThinkPad T520, model 4239CTO BIOS: ThinkPad BIOS 8AET69WW (1.49) Autoyast bootloader resource: <bootloader> <global> auto <gfxmode>auto</gfxmode> <hiddenmenu>false</hiddenmenu> false false <terminal>gfxterm</terminal> <timeout config:type="integer">8</timeout> false </global> grub2-efi </bootloader> -- You are receiving this mail because: You are on the CC list for the bug.