Does the problem go away if "intel_pstate=disable" is provided in kernel cmdline? There were many accounts of CPU being stuck at 800MHz, and they were not caused by OS at all: https://forums.bit-tech.net/index.php?threads/solved-laptop-stuck-at-800mhz.338423/ https://linustechtips.com/main/topic/531278-skylake-system-stuck-at-800mhz/ https://www.dell.com/community/Laptops-General-Read-Only/Dell-XPS-9550-CPU-Multiplier-Stuck-at-8/td-p/4740654
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838141 Title: intel_pstate not working. CPU frequency fixed at 800MHz. No cpu frequency scaling. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1838141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
