The current version of linux-firmware (20220819.git8413c63c-0ubuntu1) contains a Breaks line with: `amd64-microcode (<= 3.20220411.1ubuntu1)`.
The linux-firmware patch proposed in comment 16 contains a Breaks line with: `amd64-microcode (<< 3.20220411.1~)`. The patch in comment 16 works. Using the Breaks line `amd64-microcode (<< 3.20220411.1~)` in the current version of linux-firmware (20220819.git8413c63c-0ubuntu1) I was able to install both linux-firmware and amd64-microcode in a fresh kinetic VM with: sudo apt install linux-firmware sudo apt --fix-broken install sudo apt install linux-firmware eslerm@sec-kinetic-amd64:~$ apt-cache policy linux-firmware linux-firmware: Installed: 20220819.git8413c63c-0ubuntu3 Candidate: 20220819.git8413c63c-0ubuntu3 Version table: *** 20220819.git8413c63c-0ubuntu3 500 500 http://192.168.122.1/debs/testing kinetic/ Packages 100 /var/lib/dpkg/status 20220819.git8413c63c-0ubuntu2 500 500 http://archive.ubuntu.com/ubuntu kinetic-proposed/main amd64 Packages 500 http://archive.ubuntu.com/ubuntu kinetic-proposed/main i386 Packages 20220711.gitdfa29317-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu kinetic/main amd64 Packages 500 http://archive.ubuntu.com/ubuntu kinetic/main i386 Packages eslerm@sec-kinetic-amd64:~$ apt-cache policy amd64-microcode amd64-microcode: Installed: 3.20220411.1ubuntu2 Candidate: 3.20220411.1ubuntu2 Version table: *** 3.20220411.1ubuntu2 500 500 http://archive.ubuntu.com/ubuntu kinetic-proposed/main amd64 Packages 100 /var/lib/dpkg/status 3.20191218.1ubuntu2 500 500 http://archive.ubuntu.com/ubuntu kinetic/main amd64 Packages ** Changed in: amd64-microcode (Ubuntu) Importance: Medium => Critical ** Changed in: linux-firmware (Ubuntu) Importance: Medium => Critical -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1983409 Title: Please merge amd64-microcode 3.20220411.1 (main) from Debian unstable (non-free) Status in amd64-microcode package in Ubuntu: Triaged Status in linux-firmware package in Ubuntu: Fix Committed Bug description: Request to update amd64-micrcode in kinetic from 3.20191218.1ubuntu2 to 3.20220411.1ubuntu1. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/amd64-microcode/+bug/1983409/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp