Canonical has withdrawn the Intel Microcode update that was released on November 11 for all supported versions of Ubuntu Linux. The update had problems launching some Intel Tiger Lake systems.
News security gaps επηρεάζουν όλα τα συστήματα Linux που τρέχουν με συγκεκριμένους επεξεργαστές της Intel. Έτσι στις 10 Νοεμβρίου, η Intel κυκλοφόρησε νέα ενημέρωση για το Intel Microcode σε συστήματα Linux. Οι updates were released along with new versions of the Linux Kernel to address these new flaws.
Canonical was fast enough to fix Intel Microcode packages on all supported versions of Ubuntu (Ubuntu 20.10, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS and Ubuntu 14.04 ESM).
Unfortunately, the Intel Microcode update caused problems for some processors in the Intel Tiger Lake family, so some systems could not start. So Canonical now uses the Intel Microcode update in the previous version only for the Tiger Lake family of processors.
Η company ενημέρωσε τους χρήστες ότι μπορούν να χρησιμοποιήσουν την παράμετρο του Kernel dis_ucode_ldr στο μενού εκκίνησης για να απενεργοποιήσουν τη φόρτωση του firmware σε περίπτωση δυσoperation.
If you are using one of the supported versions of Ubuntu on a computer running an Intel Tiger Lake processor and have already installed yesterday's Intel Microcode update, it is recommended that you update the system again to the new Intel Microcode version already in the main repositories.
If you installed the Intel Microcode update yesterday and are having issues booting, you should use the kernel command line option above (dis_ucode_ldr) to prevent the firmware from loading with problems.
Then update your system from the terminal using the commands.