[Bug 205049] New: garbled graphics

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=205049

            Bug ID: 205049
           Summary: garbled graphics
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.2.15-200
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: lechp at onet.pl
        Regression: No

I'm getting severe graphics glitches in the desktop environment (XFCE, Fedora
30, on Lenovo Ideapad 330-15ARR with Ryzen 3), including text, text cursor,
images, buttons and other GUI elements including screen brightness pop-ups.
The annoyance level is severe, and usability is also affected. As can be seen
in the attachment, the output of "uname -a" is partly garbled. In this case I
know roughly what the output should have been, but I would be wary of doing
extensive debugging if I can't trust what I see on the screen.

Some of the errors last for about a second before self-correcting. Others
persist until some activity like clicking on a button with the mouse 'prompts'
the affected area of the display to be refreshed.

How to reproduce:
Normal interaction with D.E. using mouse and keyboard.

Temporary workaround:
Select kernel version 5.1.20x or older when restarting.

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