Comment # 19 on bug 1213438 from Andreas Jaeger

Takashi, just tried your test kernel after the system would not boot up with
kernel-default-5.14.21-150500.55.7.1.x86_64, it seemed to crash while starting
X server without any chance for me to grab any debug info.
With your new kernel (kernel-default-5.14.21-150500.3.1.g62ee467) everything
works fine.

Since the released kernel breaks several amdgpu systems, I propose to release
an update quickly and not wait for the August update.

# hwinfo --gfxcard
31: PCI 500.0: 0300 VGA compatible controller (VGA)             
  [Created at pci.386]
  Unique ID: Ddhb.uZbpCsxmrO5
  Parent ID: JZZT.nyyq4tDu6x8
  SysFS ID: /devices/pci0000:00/0000:00:08.1/0000:05:00.0
  SysFS BusID: 0000:05:00.0
  Hardware Class: graphics card
  Model: "ATI Picasso"
  Vendor: pci 0x1002 "ATI Technologies Inc"
  Device: pci 0x15d8 "Picasso"
  SubVendor: pci 0x17aa "Lenovo"
  SubDevice: pci 0x5127 
  Revision: 0xd1
  Driver: "amdgpu"
  Driver Modules: "amdgpu"
  Memory Range: 0xc0000000-0xcfffffff (ro,non-prefetchable)
  Memory Range: 0xd0000000-0xd01fffff (ro,non-prefetchable)
  I/O Ports: 0x1000-0x1fff (rw)
  Memory Range: 0xd0500000-0xd057ffff (rw,non-prefetchable)
  IRQ: 50 (no events)
  Module Alias: "pci:v00001002d000015D8sv000017AAsd00005127bc03sc00i00"
  Driver Info #0:
    Driver Status: amdgpu is active
    Driver Activation Cmd: "modprobe amdgpu"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #25 (PCI bridge)

Primary display adapter: #31