So I had a working dual boot set up with Ubuntu 18.04 and Windows 10, when I ran an apt upgrade and now I can no longer boot into Ubuntu (windows works fine), with the recovery mode output stuck at “Loading initial ramdisk”. Previously, I’ve noted that my laptop is unable to run Ubuntu 19.04 (but it is able to run 18.10), with it also resulting in the same problem of being stuck on “loading initial ramdisk”.
I ran the yannubuntu boot repair tool, which fixed the problem for exactly one boot - without any apt upgrades or installations, the laptop failed to boot on successive attempts. Boot repair doesn’t work on further attempts either, here is the pastebin from the output: http://paste.ubuntu.com/p/wkGfGdQgJH/
This laptop model has no discrete graphics card so it’s not a driver issue with that.
Running the Linux 5.1.1 kernel, and switching to an older kernel does not help either