Would it be possible for you to do a kernel bisection?

First, find the last -rc kernel works and the first -rc kernel doesn’t
work from http://kernel.ubuntu.com/~kernel-ppa/mainline/

Then,
$ sudo apt build-dep linux
$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
$ cd linux
$ git bisect start
$ git bisect good $(the working version you found)
$ git bisect bad $(the non-working version found)
$ make localmodconfig
$ make -j`nproc` deb-pkg
Install the newly built kernel, then reboot with it.
If it doesn’t work,
$ git bisect old
Otherwise,
$ git bisect new
Repeat to "make -j`nproc` deb-pkg" until you find the commit fixes the issue.

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https://bugs.launchpad.net/bugs/1850099

Title:
  Kernel 5.3.0-19 panic after upgrade to eoan ermine from disco dingo

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