[Thuffir]

Passing in HDMI is what some of you have noticed a staircase effect that degrades the flattening of color?

Asrock330 I have a TV connected to a Sony BRAVIA Z4500.

Try to illustrate:



At first I thought it was the skin (Alaska) that I had paid, but asking the question in the Alaska forum I realized that the effect is also present on the videos.

By cons when I make a screenshot and I pass on my laptop the image is correct (like the picture I post).
When I launch a picture viewer on my WindowManager the picture is look bad again, so it come from Asrock or X server ...

Thx.

[calmdown]

Can't say I have the same problem as you, tried to really make it obvious with a similar "flashlight" effect on the alaska skin, but it seems alright to me.

I'm running a ASRock ION 330 HT with xbmclive, hdmi to a Samsung UE46B7070

[Thuffir]

Thx for the info, do you have make some modification on xorg.conf ?
I'll download xbmclive to make a try.

[calmdown]

Thx for the info, do you have make some modification on xorg.conf ?
I'll download xbmclive to make a try.

only changed to some custom ModeLine for my tv

Code:

Section "Monitor"
    Identifier     "Monitor0"
[b]    VendorName     "SAMSUNG"
    ModelName      "UE46B7070"
    HorizSync       26.0 - 81.0
    VertRefresh     24.0 - 75.0
    ModeLine       "1920x1080@60p" 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
    ModeLine       "1920x1080@24p" 74.16 1920 2558 2602 2750 1080 1084 1089 1125 +hsync +vsync[/b]
    Option         "DPMS"
[b]    Option         "ExactModeTimingsDVI" "TRUE"[/b]
EndSection

and

Code:

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "NoLogo" "True"
[b]    Option         "DynamicTwinView" "false"[/b]
    SubSection     "Display"
        Depth       24
[b]        Modes      "1920x1080@60p" "1920x1080@24p"[/b]
    EndSubSection
EndSection

Bolded stuff is what I've changed from original xorg.

[>>X<<]

Sounds like colour banding to me which would be your screens inaccuracy, basically it cant accurately display the gradients between colours so you get banding

[Thuffir]

@calmdown, thx for info, mine seem like yours.

@X I agree but there is no problem when I watch a BRay disc on my PS3 the picture is very accurate and pure so I think is hardware (cable, Asrock output quality) or software (xorg, xbmc).

Do you think modelines or frequencies as effect on colour banding ?

[Thuffir]

I just test with the Asrock optimized Team XBMCFreak's live CD here :
http://www.xbmc.org/forum/showthread.php?t=66388

And have the same colour banding / staircase effect.

In conclusion seem it's my TV Config who need some new settings or maybe try with a better quality cable.