https://bugs.kde.org/show_bug.cgi?id=514928

[email protected] <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #1 from [email protected] <[email protected]> ---
I have encountered the same problem and managed to capture the terminal logs
when the white screen occurs. The errors confirm a failure in the Wayland color
management handshake between Chromium and KWin:

[11807:11807:0122/154756.558929:ERROR:ui/ozone/platform/wayland/host/wayland_wp_color_manager.cc:214]
Failed to populate image description for color space {r:[0.6368, 0.3298],
g:[0.2917, 0.6017], b:[0.1486, 0.0586], w:[0.3127, 0.3290]}, transfer:SRGB,
matrix:RGB, range:FULL}
[11807:11807:0122/154756.559091:ERROR:ui/ozone/platform/wayland/host/wayland_wp_color_manager.cc:296]
Unable to set image transfer function.
[11807:11807:0122/154756.559128:ERROR:ui/ozone/platform/wayland/host/wayland_wp_color_management_surface.cc:63]
Failed to create color management surface.

Analysis: This issue appears to be related to the Chromium implementation of
the color management protocol, similar to what has been reported for Brave
(see: https://github.com/brave/brave-browser/issues/50027). The white screen
occurs when the browser fails to communicate color space parameters via the
wp-color-management-v1 protocol. This failure consistently coincides with
setting the screen brightness to 100%.

Workaround: For anyone facing this issue, disabling the Wayland Color
Management feature in Chromium-based browsers prevents the white screen. Launch
the browser with this flag: --disable-features=WaylandWpColorManagerV1

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