[BUG] ubuntu-kde latest fails on RK3576/arm64 with "Your platform is not supported, ensure you have a CPU with AVX2 support"

[snakedreamy]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

ubuntu-kde latest fails on RK3576/arm64 with "Your platform is not supported, ensure you have a CPU with AVX2 support"

Expected Behavior

No response

Steps To Reproduce

Known bad

The latest image tag reproduces the issue:

ghcr.io/linuxserver/webtop:ubuntu-kde

Minimal repro

podman run -d \
  --name webtop-test \
  -p 3010:3000 \
  -p 3011:3001 \
  --security-opt label=disable \
  ghcr.io/linuxserver/webtop:ubuntu-kde

Environment

- OS:Armbian 26.2.1
- How docker service was installed:

CPU architecture

arm64

Docker creation

podman run -d \
  --name webtop-test \
  -p 3010:3000 \
  -p 3011:3001 \
  --security-opt label=disable \
  ghcr.io/linuxserver/webtop:ubuntu-kde

Container logs

[migrations] started
[migrations] no migrations found
usermod: no changes
───────────────────────────────────────

      ██╗     ███████╗██╗ ██████╗
      ██║     ██╔════╝██║██╔═══██╗
      ██║     ███████╗██║██║   ██║
      ██║     ╚════██║██║██║   ██║
      ███████╗███████║██║╚██████╔╝
      ╚══════╝╚══════╝╚═╝ ╚═════╝

   Brought to you by linuxserver.io
───────────────────────────────────────

To support LSIO projects visit:
https://www.linuxserver.io/donate/

───────────────────────────────────────
GID/UID
───────────────────────────────────────

User UID:    911
User GID:    911
───────────────────────────────────────
...+.......+..+......+.+......+..+.+.....+.+...............+.........+..............+...+....+.........+.....+++++++++++++++++++++++++++++++++++++++*......+...+.+...+...+..+++++++++++++++++++++++++++++++++++++++*........+...+...........+......+..........+........+...+....+.....+.+.....+...+............+.......+......+.........+..+..........+...+...+..+......+......+...+.............+..+......+.+..............+.+....................+......+....+........+......+.......+.....+....+.....+................+..++++++
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-----
[ls.io-init] CPU does not support AVX2. Falling back to X11
[ls.io-init] Creating initial backup of menu.xml
[ls.io-init] Creating initial backup of system rc.xml
[custom-init] No custom files found, skipping...
_XSERVTransmkdir: ERROR: euid != 0,directory /tmp/.X11-unix will not be created.
screen 0 shmid 0
xsettingsd: Loaded 1 setting from /config/.xsettingsd
[ls.io-init] done.
xsettingsd: Created window 0x200001 on screen 0 with timestamp 4613552
xsettingsd: Selection _XSETTINGS_S0 is owned by 0x0
xsettingsd: Took ownership of selection _XSETTINGS_S0
19
20
INFO:selkies.__main__:Starting mode 'websockets'...
INFO:selkies.__main__:Starting Selkies in 'websockets' mode.
INFO:data_websocket:pcmflux library found. Audio capture is available.
INFO:data_websocket:pixelflux library found. Striped encoding modes available.
INFO:root:Expected C js_config_t size (from ctypes): 1354 bytes
INFO:main:Upload directory ensured: /config/Desktop
INFO:main:Legacy Mode ENABLED (SELKIES_MASTER_TOKEN is not set).
INFO:main:Starting Selkies (WebSocket Mode) with settings: {'_setting_definitions': [{'name': 'audio_enabled', 'type': 'bool', 'default': True, 'help': 'Enable server-to-client audio streaming.'}, {'name': 'microphone_enabled', 'type': 'bool', 'default': True, 'help': 'Enable client-to-server microphone forwarding.'}, {'name': 'gamepad_enabled', 'type': 'bool', 'default': True, 'help': 'Enable gamepad support.'}, {'name': 'clipboard_enabled', 'type': 'bool', 'default': True, 'help': 'Enable clipboard synchronization.'}, {'name': 'clipboard_in_enabled', 'type': 'bool', 'default': True, 'help': 'Enable client-to-server clipboard synchronization.'}, {'name': 'clipboard_out_enabled', 'type': 'bool', 'default': True, 'help': 'Enable server-to-client clipboard synchronization.'}, {'name': 'command_enabled', 'type': 'bool', 'default': True, 'help': 'Enable parsing of command websocket messages.'}, {'name': 'file_transfers', 'type': 'list', 'default': 'upload,download', 'meta': {'allowed': ['upload', 'download']}, 'help': 'Allowed file transfer directions (comma-separated: "upload,download"). Set to "" or "none" to disable.'}, {'name': 'framerate', 'type': 'range', 'default': '8-120', 'meta': {'default_value': 60}, 'help': 'Allowed framerate range (e.g., "8-165") or a fixed value (e.g., "60").'}, {'name': 'audio_bitrate', 'type': 'enum', 'default': '320000', 'meta': {'allowed': ['64000', '128000', '192000', '256000', '320000']}, 'help': 'The default audio bitrate.'}, {'name': 'is_manual_resolution_mode', 'type': 'bool', 'default': False, 'help': 'Lock the resolution to the manual width/height values.'}, {'name': 'manual_width', 'type': 'int', 'default': 0, 'help': 'Lock width to a fixed value. Setting this forces manual resolution mode.'}, {'name': 'manual_height', 'type': 'int', 'default': 0, 'help': 'Lock height to a fixed value. Setting this forces manual resolution mode.'}, {'name': 'scaling_dpi', 'type': 'enum', 'default': '96', 'meta': {'allowed': ['96', '120', '144', '168', '192', '216', '240', '264', '288']}, 'help': 'The default DPI for UI scaling.'}, {'name': 'enable_binary_clipboard', 'type': 'bool', 'default': False, 'help': 'Allow binary data (e.g., images) on the clipboard.'}, {'name': 'use_browser_cursors', 'type': 'bool', 'default': False, 'help': 'Use browser CSS cursors instead of rendering to canvas.'}, {'name': 'use_css_scaling', 'type': 'bool', 'default': False, 'help': 'HiDPI when false, if true a lower resolution is sent from the client and the canvas is stretched.'}, {'name': 'ui_title', 'type': 'str', 'default': 'Selkies', 'help': 'Title in top left corner of sidebar.'}, {'name': 'ui_show_logo', 'type': 'bool', 'default': True, 'help': 'Show the Selkies logo in the sidebar.'}, {'name': 'ui_show_core_buttons', 'type': 'bool', 'default': True, 'help': 'Show the core components buttons display, audio, microphone, and gamepad.'}, {'name': 'ui_show_sidebar', 'type': 'bool', 'default': True, 'help': 'Show the main sidebar UI.'}, {'name': 'ui_sidebar_show_video_settings', 'type': 'bool', 'default': True, 'help': 'Show the video settings section in the sidebar.'}, {'name': 'ui_sidebar_show_screen_settings', 'type': 'bool', 'default': True, 'help': 'Show the screen settings section in the sidebar.'}, {'name': 'ui_sidebar_show_audio_settings', 'type': 'bool', 'default': True, 'help': 'Show the audio settings section in the sidebar.'}, {'name': 'ui_sidebar_show_stats', 'type': 'bool', 'default': True, 'help': 'Show the stats section in the sidebar.'}, {'name': 'ui_sidebar_show_clipboard', 'type': 'bool', 'default': True, 'help': 'Show the clipboard section in the sidebar.'}, {'name': 'ui_sidebar_show_files', 'type': 'bool', 'default': True, 'help': 'Show the file transfer section in the sidebar.'}, {'name': 'ui_sidebar_show_apps', 'type': 'bool', 'default': True, 'help': 'Show the applications section in the sidebar.'}, {'name': 'ui_sidebar_show_sharing', 'type': 'bool', 'default': True, 'help': 'Show the sharing section in the sidebar.'}, {'name': 'ui_sidebar_show_gamepads', 'type': 'bool', 'default': True, 'help': 'Show the gamepads section in the sidebar.'}, {'name': 'ui_sidebar_show_fullscreen', 'type': 'bool', 'default': True, 'help': 'Show the fullscreen button in the sidebar.'}, {'name': 'ui_sidebar_show_gaming_mode', 'type': 'bool', 'default': True, 'help': 'Show the gaming mode button in the sidebar.'}, {'name': 'ui_sidebar_show_trackpad', 'type': 'bool', 'default': True, 'help': 'Show the virtual trackpad button in the sidebar.'}, {'name': 'ui_sidebar_show_keyboard_button', 'type': 'bool', 'default': True, 'help': 'Show the on-screen keyboard button in the display area.'}, {'name': 'ui_sidebar_show_soft_buttons', 'type': 'bool', 'default': True, 'help': 'Show the soft buttons section in the sidebar.'}, {'name': 'enable_sharing', 'type': 'bool', 'default': True, 'help': 'Master toggle for all sharing features.'}, {'name': 'enable_collab', 'type': 'bool', 'default': True, 'help': 'Enable collaborative (read-write) sharing link.'}, {'name': 'enable_shared', 'type': 'bool', 'default': True, 'help': 'Enable view-only sharing links.'}, {'name': 'enable_player2', 'type': 'bool', 'default': True, 'help': 'Enable sharing link for gamepad player 2.'}, {'name': 'enable_player3', 'type': 'bool', 'default': True, 'help': 'Enable sharing link for gamepad player 3.'}, {'name': 'enable_player4', 'type': 'bool', 'default': True, 'help': 'Enable sharing link for gamepad player 4.'}, {'name': 'debug', 'type': 'bool', 'default': False, 'help': 'Enable debug logging.'}, {'name': 'mode', 'type': 'str', 'default': 'websockets', 'help': "Specify the mode: 'webrtc' or 'websockets'; defaults to websockets"}, {'name': 'enable_dual_mode', 'type': 'bool', 'default': False, 'help': 'Enable switching Streaming modes from UI'}, {'name': 'audio_device_name', 'type': 'str', 'default': 'output.monitor', 'help': 'Audio device name for pcmflux capture.'}, {'name': 'encoder', 'type': 'enum', 'default': 'x264enc', 'meta': {'allowed': ['x264enc', 'x264enc-striped', 'jpeg']}, 'help': 'The default video encoder.'}, {'name': 'h264_crf', 'type': 'range', 'default': '5-50', 'meta': {'default_value': 25}, 'help': 'Allowed H.264 CRF range (e.g., "5-50") or a fixed value.'}, {'name': 'jpeg_quality', 'type': 'range', 'default': '1-100', 'meta': {'default_value': 40}, 'help': 'Allowed JPEG quality range (e.g., "1-100") or a fixed value.'}, {'name': 'h264_fullcolor', 'type': 'bool', 'default': False, 'help': 'Enable H.264 full color range for pixelflux encoders.'}, {'name': 'h264_streaming_mode', 'type': 'bool', 'default': False, 'help': 'Enable H.264 streaming mode for pixelflux encoders.'}, {'name': 'use_cpu', 'type': 'bool', 'default': False, 'help': 'Force CPU-based encoding for pixelflux.'}, {'name': 'use_paint_over_quality', 'type': 'bool', 'default': True, 'help': 'Enable high-quality paint-over for static scenes.'}, {'name': 'paint_over_jpeg_quality', 'type': 'range', 'default': '1-100', 'meta': {'default_value': 90}, 'help': 'Allowed JPEG paint-over quality range or a fixed value.'}, {'name': 'h264_paintover_crf', 'type': 'range', 'default': '5-50', 'meta': {'default_value': 18}, 'help': 'Allowed H.264 paint-over CRF range or a fixed value.'}, {'name': 'h264_paintover_burst_frames', 'type': 'range', 'default': '1-30', 'meta': {'default_value': 5}, 'help': 'Allowed H.264 paint-over burst frames range or a fixed value.'}, {'name': 'second_screen', 'type': 'bool', 'default': True, 'help': 'Enable support for a second monitor/display.'}, {'name': 'port', 'type': 'int', 'default': 8081, 'env_var': 'CUSTOM_WS_PORT', 'help': 'Port for the data websocket server.'}, {'name': 'control_port', 'type': 'int', 'default': 8083, 'help': 'Port for the internal control plane API.'}, {'name': 'master_token', 'type': 'str', 'default': '', 'help': 'Master token to enable secure mode and protect the control plane API.'}, {'name': 'dri_node', 'type': 'str', 'default': '', 'env_var': 'DRI_NODE', 'help': 'Path to the DRI render node for VA-API.'}, {'name': 'watermark_path', 'type': 'str', 'default': '', 'env_var': 'WATERMARK_PNG', 'help': 'Absolute path to the watermark PNG file.'}, {'name': 'watermark_location', 'type': 'int', 'default': -1, 'env_var': 'WATERMARK_LOCATION', 'help': 'Watermark location enum (0-6).'}, {'name': 'wayland_socket_index', 'type': 'int', 'default': 0, 'help': 'Index for the Wayland command socket (e.g. 0 for wayland-0).'}], 'audio_enabled': (True, False), 'microphone_enabled': (True, False), 'gamepad_enabled': (False, False), 'clipboard_enabled': (True, False), 'clipboard_in_enabled': (True, False), 'clipboard_out_enabled': (True, False), 'command_enabled': (True, False), 'file_transfers': ['upload', 'download'], 'framerate': (8, 120), 'audio_bitrate': '320000', 'is_manual_resolution_mode': (False, False), 'manual_width': 0, 'manual_height': 0, 'scaling_dpi': '96', 'enable_binary_clipboard': (False, False), 'use_browser_cursors': (False, False), 'use_css_scaling': (False, False), 'ui_title': 'Selkies', 'ui_show_logo': (True, False), 'ui_show_core_buttons': (True, False), 'ui_show_sidebar': (True, False), 'ui_sidebar_show_video_settings': (True, False), 'ui_sidebar_show_screen_settings': (True, False), 'ui_sidebar_show_audio_settings': (True, False), 'ui_sidebar_show_stats': (True, False), 'ui_sidebar_show_clipboard': (True, False), 'ui_sidebar_show_files': (True, False), 'ui_sidebar_show_apps': (True, False), 'ui_sidebar_show_sharing': (True, False), 'ui_sidebar_show_gamepads': (False, False), 'ui_sidebar_show_fullscreen': (True, False), 'ui_sidebar_show_gaming_mode': (True, False), 'ui_sidebar_show_trackpad': (True, False), 'ui_sidebar_show_keyboard_button': (True, False), 'ui_sidebar_show_soft_buttons': (True, False), 'enable_sharing': (True, False), 'enable_collab': (True, False), 'enable_shared': (True, False), 'enable_player2': (False, False), 'enable_player3': (False, False), 'enable_player4': (True, False), 'debug': (False, False), 'mode': 'websockets', 'enable_dual_mode': (False, False), 'audio_device_name': 'output.monitor', 'encoder': 'x264enc', 'h264_crf': (5, 50), 'jpeg_quality': (1, 100), 'h264_fullcolor': (False, False), 'h264_streaming_mode': (False, False), 'use_cpu': (False, False), 'use_paint_over_quality': (True, False), 'paint_over_jpeg_quality': (1, 100), 'h264_paintover_crf': (5, 50), 'h264_paintover_burst_frames': (1, 30), 'second_screen': (True, False), 'port': 8082, 'control_port': 8083, 'master_token': '', 'dri_node': '', 'watermark_path': '', 'watermark_location': -1, 'wayland_socket_index': 0}
INFO:main:Initial Encoder: x264enc, Framerate: 60
INFO:main:SelkiesStreamingApp initialized: encoder=x264enc, display=1024x768
INFO:main:All main components initialized. Running server...
INFO:webrtc_input:System DPI detected as ~96. Cursor size cap set to 32x32px.
INFO:webrtc_input:Resetting keyboard modifiers.
INFO:webrtc_input:Clipboard monitor running (binary mode: False)
INFO:webrtc_input:Found XFIXES version 4.0
INFO:webrtc_input:starting cursor monitor
INFO:webrtc_input:watching for cursor changes
WARNING:data_websocket:Cannot broadcast cursor data: no clients connected or server not ready.
INFO:data_websocket:Data WebSocket Server listening on port 8082
INFO:webrtc_input:Initializing 4 persistent gamepad instances...
INFO:root:Packed js_config payload for 'Microsoft X-Box 360 pad' (js0): len=1360 bytes. Name='Microsoft X-Box 360 pad', Vendor=0x045e, Product=0x028e, Version=0x0100, Reported Buttons=11 (Array capacity: 512), Reported Axes=8 (Array capacity: 64)
INFO:selkies_gamepad:Gamepad configured. JS socket: /tmp/selkies_js0.sock, EVDEV socket: /tmp/selkies_event1000.sock. Using fixed config: Microsoft X-Box 360 pad
INFO:webrtc_input:Initialized and started persistent gamepad instance for index 0 (Name: 'Microsoft X-Box 360 pad', JS: /tmp/selkies_js0.sock, EVDEV: /tmp/selkies_event1000.sock).
INFO:root:Packed js_config payload for 'Microsoft X-Box 360 pad' (js1): len=1360 bytes. Name='Microsoft X-Box 360 pad', Vendor=0x045e, Product=0x028e, Version=0x0100, Reported Buttons=11 (Array capacity: 512), Reported Axes=8 (Array capacity: 64)
INFO:selkies_gamepad:Gamepad configured. JS socket: /tmp/selkies_js1.sock, EVDEV socket: /tmp/selkies_event1001.sock. Using fixed config: Microsoft X-Box 360 pad
INFO:webrtc_input:Initialized and started persistent gamepad instance for index 1 (Name: 'Microsoft X-Box 360 pad', JS: /tmp/selkies_js1.sock, EVDEV: /tmp/selkies_event1001.sock).
INFO:root:Packed js_config payload for 'Microsoft X-Box 360 pad' (js2): len=1360 bytes. Name='Microsoft X-Box 360 pad', Vendor=0x045e, Product=0x028e, Version=0x0100, Reported Buttons=11 (Array capacity: 512), Reported Axes=8 (Array capacity: 64)
INFO:selkies_gamepad:Gamepad configured. JS socket: /tmp/selkies_js2.sock, EVDEV socket: /tmp/selkies_event1002.sock. Using fixed config: Microsoft X-Box 360 pad
INFO:webrtc_input:Initialized and started persistent gamepad instance for index 2 (Name: 'Microsoft X-Box 360 pad', JS: /tmp/selkies_js2.sock, EVDEV: /tmp/selkies_event1002.sock).
INFO:root:Packed js_config payload for 'Microsoft X-Box 360 pad' (js3): len=1360 bytes. Name='Microsoft X-Box 360 pad', Vendor=0x045e, Product=0x028e, Version=0x0100, Reported Buttons=11 (Array capacity: 512), Reported Axes=8 (Array capacity: 64)
INFO:selkies_gamepad:Gamepad configured. JS socket: /tmp/selkies_js3.sock, EVDEV socket: /tmp/selkies_event1003.sock. Using fixed config: Microsoft X-Box 360 pad
INFO:webrtc_input:Initialized and started persistent gamepad instance for index 3 (Name: 'Microsoft X-Box 360 pad', JS: /tmp/selkies_js3.sock, EVDEV: /tmp/selkies_event1003.sock).
INFO:selkies_gamepad:Gamepad /tmp/selkies_js0.sock: Event processor started.
INFO:selkies_gamepad:JS interposer server listening on /tmp/selkies_js0.sock
INFO:selkies_gamepad:Gamepad /tmp/selkies_js1.sock: Event processor started.
INFO:selkies_gamepad:JS interposer server listening on /tmp/selkies_js1.sock
INFO:selkies_gamepad:Gamepad /tmp/selkies_js2.sock: Event processor started.
INFO:selkies_gamepad:JS interposer server listening on /tmp/selkies_js2.sock
INFO:selkies_gamepad:Gamepad /tmp/selkies_js3.sock: Event processor started.
INFO:selkies_gamepad:JS interposer server listening on /tmp/selkies_js3.sock
INFO:selkies_gamepad:EVDEV interposer server listening on /tmp/selkies_event1000.sock
INFO:selkies_gamepad:EVDEV interposer server listening on /tmp/selkies_event1001.sock
INFO:selkies_gamepad:EVDEV interposer server listening on /tmp/selkies_event1002.sock
INFO:selkies_gamepad:EVDEV interposer server listening on /tmp/selkies_event1003.sock

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[thelamer]

that is my bad I need to change this to take arm into account:

https://github.com/linuxserver/docker-baseimage-selkies/blob/master/root/etc/s6-overlay/s6-rc.d/init-selkies-config/run#L3-L8

I essentially walled out arm with this logic it always falls back to X11

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[snakedreamy]

that is my bad I need to change this to take arm into account:

https://github.com/linuxserver/docker-baseimage-selkies/blob/master/root/etc/s6-overlay/s6-rc.d/init-selkies-config/run#L3-L8

I essentially walled out arm with this logic it always falls back to X11

Thanks, that makes sense.

I can confirm this is on RK3576 / arm64, and the known-good older digest works while the latest image fails. I’ll pin the working digest for now and wait for the fix.

Please let me know when the ARM-aware logic update is merged so I can retest.