Operating System: Debian GNU/Linux 11
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
Kernel Version: 5.10.0-11-amd64
Graphics Processor: AMD RENOIR

Feb 04 00:22:02 hn kernel: vlc[518336]: segfault at 591 ip 00007fea93349e3d sp 00007fea93f65270 error 4 in libvdpau_radeonsi.so.1.0.0[7fea930cf000+591000]
Feb 04 00:22:02 hn kernel: Code: 48 83 ec 08 48 8b af 30 04 00 00 4c 8b a7 50 10 00 00 e8 66 ab ff ff 81 a3 f4 12 00 00 ff e7 ff ff 80 bb 36 6d 00 00 00 75 43 <41> 0f b6 94 24 91 05 00 00 85 d2 74 0d 80 bb 7e 10 00 00 00 0f 85
Feb 04 00:22:02 hn kernel: [drm:gfx_v9_0_priv_reg_irq [amdgpu]] *ERROR* Illegal register access in command stream
Feb 04 00:22:02 hn kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, signaled seq=4363649, emitted seq=4363650
Feb 04 00:22:02 hn kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process vlc pid 518275 thread vlc:cs0 pid 518302
Feb 04 00:22:02 hn kernel: amdgpu 0000:05:00.0: amdgpu: GPU reset begin!
...
Feb 04 00:22:02 hn kernel: [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to initialize parser -125!
Feb 04 00:22:26 hn org.kde.runners.baloo[2746]: The X11 connection broke (error 1). Did the X11 server die?
Feb 04 00:22:26 hn pulseaudio[1600]: X connection to :0 broken (explicit kill or server shutdown).
Feb 04 00:22:26 hn org.kde.kiod5[242718]: The X11 connection broke (error 1). Did the X11 server die?
Feb 04 00:22:26 hn org.kde.ActivityManager[1775]: The X11 connection broke (error 1). Did the X11 server die?
Feb 04 00:22:26 hn org.kde.KScreen[1977]: The X11 connection broke (error 1). Did the X11 server die?
Feb 04 00:22:26 hn org.kde.kiod5[242718]: Device 0 (VID=04e8 and PID=6860) is a Samsung Galaxy models (MTP).
Feb 04 00:22:26 hn kglobalaccel5[1783]: The X11 connection broke (error 1). Did the X11 server die?
Feb 04 00:22:26 hn systemd[1578]: xdg-desktop-portal-gtk.service: Main process exited, code=exited, status=1/FAILURE
...
Feb 04 00:22:26 hn xdg-desktop-portal-gtk[519473]: Unable to init server: Could not connect: Connection refused
Feb 04 00:22:26 hn xdg-desktop-por[519473]: cannot open display: :0
Feb 04 00:22:26 hn systemd[1578]: xdg-desktop-portal-gtk.service: Main process exited, code=exited, status=1/FAILURE
Feb 04 00:22:26 hn systemd[1578]: xdg-desktop-portal-gtk.service: Failed with result 'exit-code'.
Feb 04 00:22:26 hn systemd[1578]: Failed to start Portal service (GTK+/GNOME implementation).
...
Feb 04 00:24:26 hn dbus-daemon[1602]: [session uid=1000 pid=1602] Failed to activate service 'org.freedesktop.impl.portal.desktop.gtk': timed out (service_start_timeout=120000ms)

running vlc with "VDPAU_TRACE=1 VDPAU_TRACE_FILE=vlc.trace vlc".