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Hi mkjeong,Thank you for your question. I have a few questions to ask in order to be able to help you:1. Are you using a linux or android filesystem?2. Are you outputting to HDMI or using an LCD display supplied with the board?3. Did you compile the kernel/userspace mali drivers yourself?Typically we see issues like this when using single buffering, and so in the mean time you could check that you are in-fact using double buffering.ThanksChris
How do I check I am using double buffering? I don't remember me configuring that knob during the bringup. Is it in the kernel? kernel driver? user level driver? or application?Thanks for your help.Min
Hi mkjeong,Double buffering is enabled in drivers/media/video/samsung/tvout/s5p_tvout_fb.c, in the function s5p_tvout_fb_init_fbinfo. Make sure the line "fix->ypanstep" is set to 1 and not 0. Also it is just past 6pm here so you might not receive any further reply until tomorrow morning UK time.Also, I have private messaged you, in case you didn't spot it. If you could reply to that then I can escalate this issue.ThanksChris