@Philipp & @Doug: I couldn't reproduce your issue on my E5-2697 v3 platform with 0x2B and 0x36 microcode in Ubuntu 16.04. E5-2697 v3 has the same F/M/S with the affected processor E5-1650 v3 and E5-2687W v3.
Could you tell me what's your conclusion that it is a microcode regression or upstream kernel regression ? From comment#27, it seems a kernel regression, but the title and some comments always point to microcode regression. Could you reproduce it with 16.04 ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1480349 Title: Intel Microcode Breaks frequency scaling in Xeon® E5-2687W v3 & E5-1650 v3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1480349/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
