<html><body><p> <pre> > Jason: > That is a lot of information, and quite above my head! Thank you > though. > > I should note that the log items I sent you are from the "good" > kernel - > 6.11 with the commit reverted. Here is a much longer set of logs: > https://termbin.com/co6v > > I've rebuild 6.11 with the log statement enabled and the "bad" > behavior. > Here is a dmesg from that: https://termbin.com/xiev > Hi Adam, I think something wrong with your dmesg links, both logs look the same. We should see this log in the "bad" one: fmt:0x34325258, has_alpha:0x0, alpha:0xffff, con:0x2000 But anyway, I think the reason for the downgrade is clear enough to me. So let's try to figure out the solution. > These logs are both from `dmesg`. > > I'm fairly certain I've built with the patch you referenced enabled. > The > kernels I run are just release kernels, not RCs or git branches or > anything. The mainline v6.11 kernel is the one that has this problem. > If > that patch has been merged into 6.11 (which, looks like it has) then > it's in the kernel I'm building. Got it. Then OVL_CONST_BLEND might be the unsupported configuration in MT8173, I think we should remove the XRGB8888 format for MT8173. Could you please try this modification and see if it'll change to use others supported format to show the text? --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -102,12 +102,9 @@ static inline bool is_10bit_rgb(u32 fmt) } static const u32 mt8173_formats[] = { - DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, - DRM_FORMAT_BGRX8888, DRM_FORMAT_BGRA8888, DRM_FORMAT_ABGR8888, - DRM_FORMAT_XBGR8888, DRM_FORMAT_RGB888, DRM_FORMAT_BGR888, DRM_FORMAT_RGB565, Regards, Jason-JH.Lin > > - Adam Thiede </pre> </p></body></html><pre>************* MEDIATEK Confidentiality Notice ******************** The information contained in this e-mail message (including any attachments) may be confidential, proprietary, privileged, or otherwise exempt from disclosure under applicable laws. It is intended to be conveyed only to the designated recipient(s). Any use, dissemination, distribution, printing, retaining or copying of this e-mail (including its attachments) by unintended recipient(s) is strictly prohibited and may be unlawful. If you are not an intended recipient of this e-mail, or believe that you have received this e-mail in error, please notify the sender immediately (by replying to this e-mail), delete any and all copies of this e-mail (including any attachments) from your system, and do not disclose the content of this e-mail to any other person. Thank you! </pre>