chromium-browser cannot cast desktop to chromecast, immediately disconnects

Until recently, the chromium-browser was able to cast desktop windows to a chromecast device via the three-dot-menu and then 'Cast...'. This stopped working, but I can't tell exactly when, since I use this feature rather seldomly.

The current behavior is as follows:

• The chromecast device is detected and appears in the menu as a cast target.
• When starting a cast for a tab or for desktop, the menu switches to show that it is casting and the chromecast connected screen goes black, but only briefly.
• Then the casting stops as if I had stopped it manually.
• On a site like youtube, casting of the video still works.
• Current version is 89.0.4389.90.

What I tried:

• I varied all 'cast' related combinations in chrome://flags.
• Looking at all .log or LOG files in ~/.config/chromium brought up no hints.

Any hints as to how to fix or at least debug this further appreciated.

1 Answer

After some more digging, I found this reddit post and it actually has a solution: In chromium use

• three-dot-menu -> settings
• search for 'accel' and disable 'Use hardware acceleration when available'.

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