Hi, On Fri, Dec 19, 2025 at 01:59:14PM +0200, Tomi Valkeinen wrote: > Hi Mikko, > > On 05/12/2025 14:37, Mikko Rapeli wrote: > > Hi, > > > > Currently on default yocto images Xorg fails to start on AMD KV260 > > because 24/32 color depth gets detected but does not actually work. > > > > These two patches fix the issue and now 16 bpp gets detected > > and Xorg starts and draws on external HDMI display using > > kernel.org based linux-yocto kernel. > > > > Anatoliy Klymenko (1): > > drm: xlnx: zynqmp_kms: Init fbdev with 16 bit color > > > > Mikko Rapeli (1): > > drm: xlnx: zynqmp_kms: set preferred_depth to 16 bpp > > > > drivers/gpu/drm/xlnx/zynqmp_kms.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > Did you notice the few already sent serieses on the list where the topic > has been discussed?
> [PATCH] drm: xlnx: zynqmp_dp: Support DRM_FORMAT_XRGB8888 > [PATCH 0/3] drm: zynqmp: Make the video plane primary Oh I wasn't aware of these. > Or is there something else on KV260 that messes up the 24 bit color? These look very similar and likely fix the X11 startup. I will give them a try. Cheers, -Mikko
