Hi Am 13.11.25 um 21:37 schrieb Sean Anderson:
The graphics plane does not support XRGB8888, which is the default mode X uses for 24-bit color. Because of this, X must be set to use 16-bit color, which has a measurable performance penalty. Make the video plane the primary plane as it natively supports XRGB8888. An alternative approach to add XRGB8888 to the graphics plane is discussed in [1], as well as in patch 2.
Did you try to set drm_device.mode_config.preferred_depth = 16, like at [1]? IIRC user space looks at this value to auto-detect the color format.
[1] https://elixir.bootlin.com/linux/v6.17.7/source/drivers/gpu/drm/tiny/cirrus-qemu.c#L542
Best regards Thomas
[1] https://lore.kernel.org/dri-devel/[email protected]/ Sean Anderson (3): drm: zynqmp: Check property creation status drm: zynqmp: Make the video plane primary drm: zynqmp: Add blend mode property to graphics plane drivers/gpu/drm/xlnx/zynqmp_kms.c | 42 +++++++++++++++++++++++++------ 1 file changed, 34 insertions(+), 8 deletions(-)
-- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com GF: Jochen Jaser, Andrew McDonald, Werner Knoblich, (HRB 36809, AG Nürnberg)
