@Paulo: I downloaded the manual for your motherboard and found this http://dlcdnet.asus.com/pub/ASUS/mb/socketTR4/PRIME_X399-A/E13557_PRIME_X399-A_BIOS_EM_WEB_20171030.pdf
EPU Power Saving Mode The ASUS EPU (Energy Processing Unit) sets the CPU in its minimum power consumption settings. Enabling this item will apply lower CPU Core/Cache Voltage and help save energy consumption. Set this item to disabled if you are over clocking the system. Configuration options: [Disabled] [Enabled] Have you tried Disabling this? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1690085 Title: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1690085/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
