Dear openSUSE community, With the latest microcode-20201118 update, my Tumbleweed (on a Thinkpad T460) won't boot anymore. I initially thought that it is kernel-related but it looks like a regression was introduced after updating the intel-microcode from 20201110 to a version after that. It is not openSUSE-related as I can confirm that the same problem occurs with other operating systems (Ubuntu, Solus) too. Ubuntu tracks it here: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1882890 Nothing much happens with Intel: https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/3... Adding the kernel parameter dis_ucode_ldr via Yast restores boot capability, however leaves me without microcode protection. After adding kernel parameter "dis_ucode_ldr": dmesg | grep microcode [ 0.028313] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0xb2 (or later) [ 0.116757] SRBDS: Vulnerable: No microcode [ 0.116758] MDS: Vulnerable: Clear CPU buffers attempted, no microcode What is the recommended way to proceed? I looked via https://repology.org/project/intel-microcode/versions to email the packager but it looks like either Repology is configured in a way to not display any email addresses of openSUSE packagers or openSUSE doesn't publish them during the packaging process? Lastly, I went to https://build.opensuse.org/package/show/openSUSE:Factory/ucode-intel to check any current reported issues. Is this issue tracked elsewhere that I'm not aware of? Is anyone familiar whether Ubuntu applies a patch to the microcode they ship or would it rather make sense to rollback to 20201110 (I think this is the last one without the regression)? Information for package ucode-intel: ------------------------------------ Repository : openSUSE-Tumbleweed-Oss Name : ucode-intel Version : 20201118-1.1 Arch : x86_64 Vendor : openSUSE Installed Size : 3.5 MiB Installed : Yes (automatically) Status : up-to-date Source package : ucode-intel-20201118-1.1.src Summary : Microcode Updates for Intel x86/x86-64 CPUs Description : This package contains the microcode update blobs for Intel x86 and x86-64 CPUs. Many thanks for looking into this. Cheers Martin