intel-microcode is provided as binaries by Intel - other than removing the particular microcode binary blob from the package which is used by this particular processor, there is nothing the Ubuntu developers can do to fix this. I notice on the upstream Intel github project page there is a comment that they are aware of issues for some CPUs and particular microcodes https://github.com/intel/Intel-Linux-Processor-Microcode- Data-Files/issues/31#issuecomment-761228960 - and their suggestion is to ensure you are running the latest BIOS update for your machine - can you please make sure you try this first?
** Bug watch added: github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues #31 https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1911893 Title: latest microcode is not working properly on intel core i9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1911893/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs