https://bugs.kde.org/show_bug.cgi?id=505468

--- Comment #7 from Anton Valishin <[email protected]> ---
(In reply to TraceyC from comment #6)
> Thanks for the backtrace and example video.
> 
> I'm not able to reproduce this on git-master, KDE Neon Testing or Fedora 42
> using the testing steps, the attached video and a Firefox profile with no
> addons
> 
> Do you have any other system settings that might be relevant?

Firefox 
Version         141.0a1 (nightly) 
Build ID        20250613093648 (up to date)

You need to set 
        gfx.wayland.hdr=enabled
 in Firefox about:config. 

And you have to run it with HDR mode enabled

>From the issue on Mozilla's bug tracker
> From Firefox perspective HDR is not enabled (missing support for DRM 30313050 
> format ( VA_FOURCC_P010))
It still crashes, although there is a patch for 
       Disable direct HDR rendering if Wayland compositor is missing support
for YUV formats
       https://phabricator.services.mozilla.com/D253312
Maybe it did not land to nightly yet...

So... I've filed the bug that KWin is missing support of HDR formats and
modifiers from Firefox's view when HDR is enabled
>  iface_zwp_linux_buffer_params_v1 extension doesn't advertise dmabuf YUV P010 
> format used for HDR rendering

Thank you

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