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Just two days ago (Jun 18, 2019), I was prompted to allow a routine Ubuntu update. After update finished and reboot, I'm no longer able to boot into Ubuntu. Specifically, I was taken to the Grub screen, select 'ubuntu', then face a purple screen, nothing happens afterward.

There's this thread, addressing I think the same issue. My question is :

Is it possible to roll back the Intel microcode change without doing what is suggested there,

sudo apt-get install intel-microcode=3.20180312.0~ubuntu18.04.1

Reason this is not possible is, in terminal mode, I have no access to internet.

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  • Have you looked in /var/cache/apt/archives/ to see if what you want to return to isn't already on your system (though if you're regular in cleaning/autoremove it may not be) as this would allow dpkg..
    – guiverc
    Jun 20, 2019 at 23:19
  • @guiverc Would microcode updates be in there? What would the file look like (name)? Will definitely look into, thks for suggesting this location.
    – horaceT
    Jun 21, 2019 at 0:58
  • I assume so, however my system was autoclean/autoremove in the last 15 hours so I don't see any microcode in mine (loads of other files as I'm running 19.10), but it'll look like a file found here security.ubuntu.com/ubuntu/pool/main/i/intel-microcode You could always download the version you want from this site using your existing device, transfer via sneaker-net (ie. tape/floppy/thumb-drive) and dpkg -i install that. (apt-get will use dpkg to do actual install once it's got everything.. ie. what your post talked of really as a fix just by-passing apt-get
    – guiverc
    Jun 21, 2019 at 1:22

1 Answer 1

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You need any System with internet access. Direkt download link intel-microcode_3.20180312.0~ubuntu18.04.1_amd64.deb 64-bit

or for 32-bit intel-microcode_3.20180312.0~ubuntu18.04.1_i386.deb

Save the file to an usb-stick. boot your bionic in recovery-mode. Make sure /-partition in mount rw. mount -o remount,rw / mount the usb-stick and install the package directly with dpkg

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