(2014-07-10, 16:06)furii Wrote: (2014-07-10, 05:11)Matt Devo Wrote: If your set supports it (mine does, Panny VT50), you can set the color range to auto, leave the intel driver setting on Automatic (default), and set XBMC to full range (default) and everything will look like it should
my blacks were ok the problem was the banding which was clearly visible on the greyscale ramp test pattern.
your post had me wanting to do a full set of testing as there seem to be quite a few of us with panny plasmas (RIP) and intel hardware. this is based on the avsforum test patterns for black clipping (basic settings\1-black clipping.mp4) and the grey scale ramp (misc patters\1-greyscale ramp.mp4). in every instance my panasonic vt50 detected the color range (menu > picture > hdmi settings > hdmi/dvi rgb range) as limited (or as they call it standard). in no instance did it detect it as full range (or as they call it non-standard).
xrandr default
-----------------------------------------------------
16-235 xbmc setting disabled
tv set to auto/limited: black clipping good (ref 16)
tv set to full: blacks extremely grey (ref 16)
greyscale ramp: stairstepping [
image]
16-235 xbmc setting enabled
tv set to auto/limited: black clipping incorrect (ref 0)
tv set to full/limited: black clipping incorrect and blacks extremely grey (ref 0)
greyscale ramp: smooth [
image]
xrandr "Full"
-----------------------------------------------------
16-235 xbmc setting disabled
tv set to auto/limited: blacks too black (ref >25)
tv set to full: black clipping good (ref 16)
greyscale ramp: stairstepping [
image]
16-235 xbmc setting enabled
tv set to auto/limited: black clipping good (ref 16)
tv set to full: black clipping wrong (ref 0)
greyscale ramp: smooth [
image]
xrandr "Limited 16:235"
-----------------------------------------------------
16-235 xbmc setting disabled
hdmi auto/limited: black clipping ok (ref 16)
hdmi full: blacks extremely grey (ref 16)
greyscale ramp: stairstepping [
image]
16-235 xbmc setting enabled
hdmi auto/limited: black clipping wrong (ref 0)
hdmi full: black clipping wrong and blacks grey (ref 0)
greyscale ramp: smooth [
image]
greyscale ramp images are included for each iteration even though it wasn't necessary.
tl;dr: the only combination that produced proper black clipping and a smooth greyscale ramp was setting xrandr to full and enabling the 16-235 xbmc setting. and according to lmyllari and others that know better than me BTB and WTW are untouched.