[Bug 216175] New: PowerColor Radeon Rx 6400 ITX does not work.

[bugzilla-daemon at kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216175

            Bug ID: 216175
           Summary: PowerColor Radeon Rx 6400 ITX does not work.
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.19-rc3
          Hardware: AMD
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: nobutarounosuke at gmail.com
        Regression: No

Created attachment 301277
  --> https://bugzilla.kernel.org/attachment.cgi?id=301277&action=edit
Attachment-A

My PowerColor Radeon Rx 6400 ITX never works. I explain it step by step.


My regular hardware set is here and it surely works well,

CPU: Ryzen 3 PRO 4350G
MB: Asrock A520M-ITX/AC 
BIOS: v1.90
Display output: From Ryzen 3 PRO 4350G via HDMI.

Next, I turn off the power supply and add Radeon RX 6400 and output from RX
6400.
In this time, a mosaic screen is shown. After some seconds, the screen becomes
black out.
Neither CTRL-ALT-DEL nor SysRq keys are work. (Attachment-A is the journal of
this run)

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