increase Raspi3 Raspbian real Colour Depth - Raspberry Pi Forums

dear all

have problem raspi 3 (but raspi 2) , raspbian , ubuntu mate last versions (but not openelec , kodi works perfectly): have misured colour depth xwininfo nominal 24-bit colour depth isn't real 1 see on monitors (either old monitor vga hdmi vga adapter , new monitors samsung mod. t22e39oew fullhd 1920 x 108 hdmi or samsung syncmaster bx2231 fullhd 1920 x 1080 hdmi) because colours "grained".

results of xwininfo command;

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pi@raspberrypi:~ $ xwininfo -root | grep depth depth: 24 

detailed info:

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pi@raspberrypi:~ $ xwininfo  xwininfo: please select window information clicking mouse in window.  xwininfo: window id: 0x160007f "(1) facebook - iceweasel"  absolute upper-left x: 0 absolute upper-left y: 65 relative upper-left x: 0 relative upper-left y: 29 width: 1824 height: 919 depth: 24 visual: 0x21 visual class: truecolor border width: 0 class: inputoutput colormap: 0x20 (installed) bit gravity state: northwestgravity window gravity state: northwestgravity backing store state: notuseful save under state: no map state: isviewable override redirect state: no corners: +0+65 -0+65 -0-0 +0-0 -geometry 1824x919+0-0 

colours not nitid think have en effective 16 bit colour depth

have inserted instructions

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framebuffer_depth=32 framebuffer_ignore_alpha=1  

in /boot/config.txt

have no effect

have enabled opengl driver
have no effect too, except increasing mps 38 60 fps.

can me increase effective colour depth 24-bit ?

thanks

stefano colonna

dear all

have repeated attempts , results:

after adding in /boot/config.txt instruction

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framebuffer_depth=24

in monitor samsung sync master bx2231 fullhd see 24bit colour depth
indeed in monitor tv samsung mod. t22e39oew don't see 24-bit of colour depth

attention , best regards

stefano colonna

raspberrypi