[Alchete]

Two options:

1) Full range output:

Code:

xrandr --output HDMI1 --set "Broadcast RGB" "Full"

, disable VA-API decoding

2) Limited range output (with nightly):

Code:

xrandr --output HDMI1 --set "Broadcast RGB" "Full"

, disable VA-API decoding, set 16-235 range in system -> video and set limited range RGB from your TV/monitor. This gives the best quality (no banding in greyscale ramp, blacks and whites don't clip).

Thank you lmyllari. I tried the test package you linked and setting #2 was the only one that gave me acceptable results. Much better! Excellent work!!

Hopefully software decoding holds up under the strain.

Do you suspect the Intel driver or XBMC as the source of the problem? How can we report it to the right party?