in my earlier question you can find at: Blackscreen after GRUB screen right after upgrading Ubuntu 18.04
i describe my error:
I'm using an Asus Zenbook UX562F with an integrated GTX 1050 Max-Q. After the installation, I installed Nvidia-390 and updated the kernel with ukuu to 4.20.17 to fix no sound issue.
After the reboot, everything went well and I did:
apt-get update apt-get upgrade + J
All was done well, so I restarted and on the next boot after selecting Ubuntu in GRUB it gave me a long black screen (violet screen) where nothing changes after so much time.
I tried to add nomodeset and noveau.modeset=0 single and together but didn't help so I don't know what to do.
After investigating deeper by installing packages and try to boot i found out that the package which is causing the error is:
when i purge and block this package with:
sudo apt-get purge intel-microcode sudo apt-mark hold intel-microcode
before upgrading wuth
sudo apt-get upgrade
my system is able to boot normal.
The problem i see is that as i understand it the package protects my intel cpu
Intel® Core™ i7 8565U 1.8 GHz
is vulnearable to meltdown attacks which get fixed by the package.
What can i do to fix the vulnearbility and also get my system to a bootable state?
Thanks for your help Vimu
Edit: I used the manual update technique mentioned at (in german):
and i used the files from the intel github repo:
with the following code mentioned in the tutorial to update the firmware microcode files
sudo cp intel-ucode/06-8e-09 /lib/firmware/intel-ucode/ echo 1 | sudo tee /sys/devices/system/cpu/microcode/reload
i overwrote the old microcode firmware with the newest available on the intel repo
it leada to a bootable system
will this be the best possible fix without upgrading the intel-microcode package provided by apt?