[Bug 112288] Blank display on Ubuntu 19.10 on Ryzen 3 2200G and Ryzen 5 2400G APUs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112288

            Bug ID: 112288
           Summary: Blank display on Ubuntu 19.10 on Ryzen 3 2200G and
                    Ryzen 5 2400G APUs
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: mortenkjeldgaard at gmail.com

Filing bug report here on request by Ubuntu bug team, please see discussion on
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1848900

My problem arose after upgrading Ubuntu 19.04 -> 19.10. The lighted welcome
screen displays fine, but when I try to log in I get a black screen and the
monitor appears to be frozen (can't switch to virtual terminal either). The
machine is running normally and I can log on via ssh.

Other users in the above mentioned bug on LP have different variations of the
same problems, some have problems using the live DVD.

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