How to set to make imx6q HDMI display full screen

[zjz]

the left margin and right margin of picture the imx6q HDMI(1920x1080) display on TV is too wide.

Here is fb_videomode when resolution is 1920x1080

mxc_cea_mode	[16] = {
		NULL, 60, 1920, 1080, 6734, 148, 88, 36, 4, 44, 5,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,
	}

I changed the value of left margin and right margin showed above

The value is writen to corresponding register in function hdmi_av_composer but nothing changed. 

so  how can I eliminate the left and right margin imx6q HDMI display on TV?

[jamiew]

Also worth double checking your TV is set to "Just Scan" in the aspect ratio menu rather than "16:9" etc as TVs often don't map 1920x1080 pixel to pixel.

[zjz]

Thks for your reply

[CarlosCasillas]

Hi,

If you are using Android and you have cloned displays (for example, LVDS display and HDMI monitor), both will be set to the lower resolution (typically, the LVDS display resolution) although manually setting the resolution on the FB driver. If you want full screen on the HDMI screen, you could try disabling the LVDS display and only sending the video to the HDMI interface. If you want to force the resolution, you could try using ADB commands for manually changing it on this way.

Hope this will be useful for you.
Best regards!
/Carlos

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