Hi Thorsten, Thank you for the quick check and for linking the fixing patch set!
Good to know the warning is safe to ignore. I will keep an eye on the series and test it once it lands. Best regards, Robson Em ter., 1 de set. de 2026 às 04:16, Thorsten Leemhuis <[email protected]> escreveu: > > On 8/31/26 15:46, Robson Candido dos Santos Alves wrote: > > > > After updating from kernel v7.2.2 to v7.3-rc1, several DRM plane > > warnings regarding unset blend modes for pixel formats with alpha > > channels started appearing in dmesg during initialization. > > > > Good Version: > > - Kernel: 7.2.2-070202-generic > > - Display Core: v3.2.384 > > - Result: Driver initializes cleanly without plane/blend mode warnings. > > > > Bad Version: > > - Kernel: 7.3.0-070300rc1-generic > > - Display Core: v3.2.392 > > - Result: Driver emits the following warnings in dmesg: > > > > [drm] [PLANE:44:plane-0] pixel format with alpha exposed but blend > > mode not setup. Please fix. > Thx for the report. Not my area of expertise, but I guess that is caused > by 9813e158d13d ("drm/drm_blend: allow blend mode property without > PREMULTI") and will be fixed by the patch set "drm/atomic-state-helper: > fixes for blend-mode-prop warning": > https://lore.kernel.org/all/[email protected]/ > > That patches are afaics scheduled for inclusion in 7.4 -- but afaik the > the warning is safe to ignore. > > Ciao, Thorsten > > #regzbot introduced: 9813e158d13d >
