Videos in system settings are not starting

The example videos in System / Window Management / Kwin Effects are not starting here.
(plasma + wayland)

When started from shell this is the output ( last line is suspect ) :

qml: Page SubCategoryPage_QMLTYPE_2(0x61728fa2c120) is already in the PageRow
qml: Pushed pages do not conform to the rules. Please check the documentation.
qml: push (file:///usr/lib/qt6/qml/org/kde/kirigami/PageRow.qml:223)
onActiveSubCategoryRowChanged (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:180)
expression for onClicked (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:210)


qt.multimedia.ffmpeg: Using Qt multimedia with FFmpeg version n7.1 GPL version 3 or later
qt.multimedia.ffmpeg: Available HW decoding frameworks:
qt.multimedia.ffmpeg:      cuda
qt.multimedia.ffmpeg:      vdpau
qt.multimedia.ffmpeg:      vulkan
qt.multimedia.ffmpeg: Available HW encoding frameworks:
qt.multimedia.ffmpeg:      cuda
qt.multimedia.ffmpeg:      vdpau
qt.multimedia.ffmpeg:      vulkan
[ogg @ 0x7063fc001640] Broken file, keyframe not correctly marked.

inxi -Faz

System:
 Kernel: 6.12.10-arch1-1 arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
   clocksource: tsc avail: hpet,acpi_pm
   parameters: initrd=\1f62c144d99d4d2f823b7ba8ab2e1a86\6.12.10-arch1-1\initrd
   nvme_load=YES nowatchdog rw
   root=UUID=82b0d421-3eb8-4121-97f1-8efededa553a nvidia_drm.modeset=1 rw
   root=UUID=82b0d421-3eb8-4121-97f1-8efededa553a nvidia_drm.modeset=1
   systemd.machine_id=1f62c144d99d4d2f823b7ba8ab2e1a86
 Desktop: KDE Plasma v: 6.2.5 tk: Qt v: N/A info: frameworks v: 6.10.0
   wm: kwin_wayland vt: 1 dm: SDDM Distro: EndeavourOS base: Arch Linux
Machine:
 Type: Desktop Mobo: ASRock model: Z77 Pro3 serial: <superuser required>
   uuid: <superuser required> UEFI: American Megatrends v: P1.90
   date: 12/04/2012
CPU:
 Info: model: Intel Core i7-3770 bits: 64 type: MT MCP arch: Ivy Bridge
   gen: core 3 level: v2 built: 2012-15 process: Intel 22nm family: 6
   model-id: 0x3A (58) stepping: 9 microcode: 0x21
 Topology: cpus: 1x dies: 1 clusters: 4 cores: 4 threads: 8 tpc: 2
   smt: enabled cache: L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB
   desc: 4x256 KiB L3: 8 MiB desc: 1x8 MiB
 Speed (MHz): avg: 1600 min/max: 1600/3900 scaling: driver: intel_cpufreq
   governor: schedutil cores: 1: 1600 2: 1600 3: 1600 4: 1600 5: 1600 6: 1600
   7: 1600 8: 1600 bogomips: 54424
 Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
 Vulnerabilities:
 Type: gather_data_sampling status: Not affected
 Type: itlb_multihit status: KVM: Split huge pages
 Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
   vulnerable
 Type: mds mitigation: Clear CPU buffers; SMT vulnerable
 Type: meltdown mitigation: PTI
 Type: mmio_stale_data status: Unknown: No mitigations
 Type: reg_file_data_sampling status: Not affected
 Type: retbleed status: Not affected
 Type: spec_rstack_overflow status: Not affected
 Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
   prctl
 Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
   sanitization
 Type: spectre_v2 mitigation: Retpolines; IBPB: conditional; IBRS_FW;
   STIBP: conditional; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not
   affected
 Type: srbds status: Vulnerable: No microcode
 Type: tsx_async_abort status: Not affected
Graphics:
 Device-1: Intel IvyBridge GT2 [HD Graphics 4000] vendor: ASRock driver: i915
   v: kernel arch: Gen-7 process: Intel 22nm built: 2012-13 ports: active: none
   empty: DP-2, DP-3, HDMI-A-2, HDMI-A-3, VGA-1 bus-ID: 00:02.0
   chip-ID: 8086:0162 class-ID: 0380
 Device-2: NVIDIA GP106 [GeForce GTX 1060 3GB] vendor: Gigabyte
   driver: nvidia v: 565.77 alternate: nouveau,nvidia_drm non-free: 550/565.xx+
   status: current (as of 2025-01; EOL~2026-12-xx) arch: Pascal code: GP10x
   process: TSMC 16nm built: 2016-2021 pcie: gen: 3 speed: 8 GT/s lanes: 16
   ports: active: none off: HDMI-A-1 empty: DP-1,DVI-D-1,DVI-D-2
   bus-ID: 01:00.0 chip-ID: 10de:1c02 class-ID: 0300
 Device-3: EEH Datalink GmbH ALPHACOOL USB DISPLAY driver: N/A type: USB
   rev: 1.1 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 2-1.5:3
   chip-ID: 060c:04eb class-ID: ff00 serial: <filter>
 Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.4
   compositor: kwin_wayland driver: X: loaded: modesetting,nvidia
   alternate: fbdev,intel,nouveau,nv,vesa dri: crocus
   gpu: nvidia,nvidia-nvswitch display-ID: 0
 Monitor-1: HDMI-A-1 model: Samsung SMT27A300 built: 2011 res:
   mode: 1920x1080 hz: 60 scale: 100% (1) dpi: 82 gamma: 1.2
   size: 598x336mm (23.54x13.23") diag: 686mm (27") ratio: 16:9 modes:
   max: 1920x1080 min: 640x480
 API: EGL v: 1.5 hw: drv: nvidia platforms: device: 0 drv: nvidia gbm:
   drv: nvidia surfaceless: drv: nvidia wayland: drv: nvidia x11: drv: nvidia
 API: OpenGL v: 4.6.0 vendor: nvidia v: 565.77 glx-v: 1.4
   direct-render: yes renderer: NVIDIA GeForce GTX 1060 3GB/PCIe/SSE2
   memory: 2.93 GiB display-ID: :1.0
 API: Vulkan v: 1.4.303 layers: 1 device: 0 type: discrete-gpu name: NVIDIA
   GeForce GTX 1060 3GB driver: N/A device-ID: 10de:1c02
   surfaces: xcb,xlib,wayland
 Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
   de: kscreen-console,kscreen-doctor gpu: nvidia-settings,nvidia-smi
   wl: wayland-info x11: xdpyinfo, xprop, xrandr
Audio:
 Device-1: NVIDIA GP106 High Definition Audio vendor: Gigabyte
   driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
   bus-ID: 01:00.1 chip-ID: 10de:10f1 class-ID: 0403
 API: ALSA v: k6.12.10-arch1-1 status: kernel-api
   tools: alsactl,alsamixer,amixer
 Server-1: PipeWire v: 1.2.7 status: active with: 1: pipewire-pulse
   status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
   4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
 Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
   vendor: ASRock driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
   port: d000 bus-ID: 05:00.0 chip-ID: 10ec:8168 class-ID: 0200
 IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
 IF-ID-1: virbr0 state: down mac: <filter>
 IF-ID-2: vmnet1 state: unknown speed: N/A duplex: N/A mac: <filter>
 IF-ID-3: vmnet8 state: unknown speed: N/A duplex: N/A mac: <filter>
 Info: services: NetworkManager, sshd, systemd-timesyncd, wpa_supplicant
Drives:
 Local Storage: total: 2.43 TiB used: 356.03 GiB (14.3%)
 SMART Message: Unable to run smartctl. Root privileges required.
 ID-1: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 830 Series
   size: 119.24 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
   tech: SSD serial: <filter> fw-rev: 3B1Q scheme: GPT
 ID-2: /dev/sdb maj-min: 8:16 vendor: Kingston model: SA400S37240G
   size: 223.57 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
   tech: SSD serial: <filter> fw-rev: B1D1 scheme: GPT
 ID-3: /dev/sdc maj-min: 8:32 vendor: A-Data model: SU800 size: 238.47 GiB
   block-size: physical: 4096 B logical: 512 B speed: 3.0 Gb/s tech: SSD
   serial: <filter> fw-rev: 1A scheme: MBR
 ID-4: /dev/sdd maj-min: 8:48 vendor: Fanxiang model: S101 2TB MX
   size: 1.86 TiB block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s
   tech: SSD serial: <filter> fw-rev: 628 scheme: GPT
Partition:
 ID-1: / raw-size: 60.55 GiB size: 59.29 GiB (97.93%) used: 22.71 GiB (38.3%)
   fs: ext4 dev: /dev/sdb2 maj-min: 8:18
 ID-2: /home raw-size: 100.59 GiB size: 98.45 GiB (97.87%)
   used: 12.08 GiB (12.3%) fs: ext4 dev: /dev/sdb3 maj-min: 8:19
Swap:
 Alert: No swap data was found.
Sensors:
 System Temperatures: cpu: 26.0 C mobo: N/A
 Fan Speeds (rpm): N/A
Info:
 Memory: total: 32 GiB available: 31.23 GiB used: 2.53 GiB (8.1%)
 Processes: 262 Power: uptime: 52m states: freeze,mem,disk suspend: deep
   avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
   suspend, test_resume image: 12.44 GiB services: org_kde_powerdevil,
   power-profiles-daemon, upowerd Init: systemd v: 257 default: graphical
   tool: systemctl
 Packages: pm: pacman pkgs: 1378 libs: 319 tools: pacseek,yay Compilers:
   gcc: 14.2.1 Shell: Bash v: 5.2.37 running-in: konsole inxi: 3.3.37
1 Like

Confirmed, am on version 6.2.91 (beta) no videos work.

This has been a problem for a while at least for me. I’m pretty sure I even reported it, but last I checked it couldn’t be reproduced on kde neon at the time, so it seemed to be arch specific. Nothing could be done as it couldn’t really be reproduced. I’ll need to check other distros again to see if the problem has spread there yet.

Edit just tried with neon. They aren’t working there either. Time to track down and reopen that old bug report.

Looks like it was already reopened. Here you go
https://bugs.kde.org/show_bug.cgi?id=440244

So it seems to be a downstream problem (they say) because the ogg codec is working here. I don’t know if it’'s distro related too.

I know that what they said initially, but I’m hoping they reconsider since it is also broken in kde neon. Which theoretically should be making a best effort to do things as upstream intended.

Not working for me in EndeavourOS or Fedora :frowning_face:

2 Likes