intel-ucode: add README
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intel-ucode/README
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intel-ucode/README
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post-install
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---
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Enabling Intel microcode updates
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Microcode must be loaded by the bootloader.
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These updates must be enabled by adding /boot/early-ucode.cpio as the *FIRST* initrd in the bootloader config file.
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This is in addition to the normal initrd file, if you are using one.
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GRUB2
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---
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- Automatic method
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grub-mkconfig will automatically detect the microcode update and configure GRUB appropriately.
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After installing the intel-ucode package, regenerate the GRUB config to activate loading the microcode update by running:
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# grub-mkconfig -o /boot/grub/grub.cfg
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- Manual method
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Alternatively, manually add /boot/early-ucode.cpio to grub.cfg, so
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it looks similar to below:
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echo 'Loading Linux 4.15.3 ...'
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linux /boot/vmlinuz-4.15.3 root=/dev/sdb1 ro rootfstype=ext4 rootfstype=ext4 quiet
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echo 'Loading intel microcode ...'
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initrd /boot/early-ucode.cpio $OTHER_INITRD
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You'll have to do it for every kernel you have,
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so the use of the automagic method is reccomended.
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OTHER BOOTLOADERS
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---
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Patches to add them to the README welcome :)
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