I'm afraid I won't be able to test the Bionic version before the end of the 
year. I don't have a Bionic installation on my machine, and the next free 
weekend for installing a new system and doing tests like that would be in 
2020...
Anybody else, who could give it a try?

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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/1848848

Title:
  Firmware for Radeon RX5700 (navi10) missing / boot failure

Status in linux-firmware package in Ubuntu:
  Fix Released
Status in linux-firmware source package in Bionic:
  Fix Committed
Status in linux-firmware source package in Eoan:
  Fix Released

Bug description:
  As an owner of a Radeon RX5700 GPU, I was really looking forward to
  the Eoan release which includes the Linux Kernel 5.3 and Mesa 19.2 -
  both with finally Radeon RX5700 (navi10) support. However, upgrading
  my system from Kubuntu 18.10 (working) via 19.04 (does not boot) to
  19.10 resulted in a boot failure. Last message shown on the screen is:

  fb0: switching to amdgpudrmfb from EFI VGA

  After some research I found that the package linux-firmware does not
  include the necessary files /lib/firmware/amdgpu/navi10_*. After I
  manually copied the missing files from the repository
  git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-
  firmware.git, I was able to boot normally.

  Please update the package linux-firmware and add the needed firmware.

  
  $ lsb_release -rd
  Description:    Ubuntu 19.10
  Release:        19.10
  $ apt-cache policy linux-firmware
  linux-firmware:
    Installiert:           1.183
    Installationskandidat: 1.183
    Versionstabelle:
   *** 1.183 500
          500 http://de.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
          500 http://de.archive.ubuntu.com/ubuntu eoan/main i386 Packages
          100 /var/lib/dpkg/status

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