Comment # 2 on bug 1206864 from Karl Mistelberger

(In reply to Takashi Iwai from comment #1)
> Looks like a problem of amdgpu.
> 
> I suppose it's something new in 6.1.x, and not happening with 6.0.x kernel?
> If yes, please report to the upstream, e.g. gitlab.freedesktop.org Issues.

Last (almost) known good kernel is 5.18.11-1:

Jan 05 03:20:49 erlangen kernel: [drm] PCIE GART of 256M enabled (table at
0x000000F400300000).
Jan 05 03:20:49 erlangen kernel: [drm] Fence fallback timer expired on ring
sdma0
Jan 05 03:20:49 erlangen kernel: [drm] Fence fallback timer expired on ring
sdma0
Jan 05 03:20:49 erlangen kernel: [drm] UVD and UVD ENC initialized
successfully.
Jan 05 03:20:49 erlangen kernel: [drm] VCE initialized successfully.

All 6.0 and newer fail.

> In anyway, please give the hardware details.

erlangen:~ # inxi -zaG
Graphics:
  Device-1: AMD Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X]
    vendor: Sapphire driver: amdgpu v: kernel arch: GCN-4 code: Arctic Islands
    process: GF 14nm built: 2016-20 pcie: gen: 3 speed: 8 GT/s lanes: 8 ports:
    active: HDMI-A-1 empty: DP-1,DVI-D-1 bus-ID: 2b:00.0 chip-ID: 1002:699f
    class-ID: 0300 temp: 49.0 C
  Display: x11 server: X.Org v: 21.1.6 with: Xwayland v: 22.1.7
    compositor: kwin_x11 driver: X: loaded: amdgpu
    unloaded: fbdev,modesetting,vesa dri: radeonsi gpu: amdgpu display-ID: :0
    screens: 1
  Screen-1: 0 s-res: 3840x2160 s-dpi: 192 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93")
  Monitor-1: HDMI-A-1 mapped: HDMI-A-0 model: Samsung LU28R55
    serial: <filter> built: 2038 res: 3840x2160 hz: 60 dpi: 154 gamma: 1.2
    size: 632x360mm (24.88x14.17") diag: 727mm (28.6") ratio: 16:9 modes:
    max: 3840x2160 min: 720x400
  API: OpenGL v: 4.6 Mesa 22.3.2 renderer: AMD Radeon RX 550 / 550 Series
    (polaris12 LLVM 15.0.6 DRM 3.46 5.18.11-1-default) direct render: Yes
erlangen:~ #