mirror-linux/Documentation/ABI/testing/sysfs-class-drm

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What: /sys/class/drm/.../boot_display
Date: January 2026
Contact: Linux DRI developers <dri-devel@vger.kernel.org>
Description:
This file indicates that displays connected to the device were
used to display the boot sequence. If a display connected to
the device was used to display the boot sequence the file will
be present and contain "1".