Arch Linux User Repository

other than the theme parsing & xdg portal errors those errors/warnings are just how it is from upstream and what i get too so looks fine, if it is working now then it's all good. i'll add xdg-desktop-portal as a dependency too but it could just the implementation for your DE doesnt support that background mode thing which i don't think should affect usage/functionality

I re-installed it, all of a sudden it's opening correctly multiple times?

Anyway,

sh -c "stremio -o '%u'"

(stremio:707777): Gtk-WARNING **: 03:47:02.214: Theme parsing error: gtk.css:164:14: 'filter' is not a valid property name
2026-05-20T07:47:02.226371Z ERROR stremio_linux_shell::app: Failed to set background mode: A portal frontend implementing `org.freedesktop.portal.Background` was not found
Cannot load libcuda.so.1

(stremio:707777): libayatana-appindicator-WARNING **: 03:47:02.231: libayatana-appindicator is deprecated. Please use libayatana-appindicator-glib in newly written code.
(node:707779) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:707779) [DEP0060] DeprecationWarning: The `util._extend` API is deprecated. Please use Object.assign() instead.
(node:707779) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
Failed to convert IpcEvent to IpcMessageRequest: Unknown method
(node:707779) [DEP0044] DeprecationWarning: The `util.isArray` API is deprecated. Please use `Array.isArray()` instead.
Error: stream ended
    at Socket.onFinished (/usr/share/stremio/server.js:81013:145)
    at AsyncResource.runInAsyncScope (node:async_hooks:214:14)
    at Socket.<anonymous> (node:internal/streams/end-of-stream:61:21)
    at Socket.<anonymous> (node:internal/util:569:20)
    at Socket.onfinish (node:internal/streams/end-of-stream:125:16)
    at Socket.emit (node:events:519:28)
    at Socket.emit (node:domain:489:12)
    at finish (node:internal/streams/writable:955:10)
    at process.processTicksAndRejections (node:internal/process/task_queues:89:21)
Error: stream ended
    at Socket.onFinished (/usr/share/stremio/server.js:81013:145)
    at AsyncResource.runInAsyncScope (node:async_hooks:214:14)
    at Socket.<anonymous> (node:internal/streams/end-of-stream:61:21)
    at Socket.<anonymous> (node:internal/util:569:20)
    at Socket.onfinish (node:internal/streams/end-of-stream:125:16)
    at Socket.emit (node:events:519:28)
    at Socket.emit (node:domain:489:12)
    at finish (node:internal/streams/writable:955:10)
    at process.processTicksAndRejections (node:internal/process/task_queues:89:21)
[707777:707871:0520/034706.590461:ERROR:google_apis/gcm/engine/registration_request.cc:291] Registration response error message: DEPRECATED_ENDPOINT

it was missing a couple dependencies, critically nodejs so if you didn't already have that a black window would make sense. i've updated it to include that as a dependency. if it still doesn't work open the app from a terminal and share the output it gives here

Is there any reason why this just shows a black box when starting?