08:54 <narmstrong> xdarklight: I think it's a alpha issue

08:55 <narmstrong> xdarklight: OSD_COLOR_MATRIX_32_RGBA causes the blue tint, but you must badly configure alpha, the framebuffer must have all alpha bits set, and kmscube buffer not

16:59 <xdarklight> narmstrong: I think you are right with this

17:00 <xdarklight> narmstrong: looking at the ALPHA value in VIU_OSD1_TEST_RDDATA[7:0] (and OSD2): 3.10 kernel: 0x1a2c=0x2d85757f, 0x1a4c=0x10808000 - mainline: 0x1a2c=0x10808000, 0x1a4c=0x00000000

17:00 <xdarklight> narmstrong: OSD1 is interesting, because alpha is 0x7f on 3.10 but 0x0 on mainline

18:00 <xdarklight> narmstrong: you're 100% right. if I do this https://pastebin.com/LHxTa9rb and then try the result on my Le Potato board then I end up in the same situation as on Meson8b: no framebuffer output but kmscube looks fine!