[Openchrome-users] Troublshooting NoScale Problems on VT1622A

[Jake Thompson]

Hi All,
So after alot of playing and tweaking, I am still having the "Green Fade"
issue with my VT1622A.

Running the display in 720x480Noscale causes a green fade on the top of the
screen and alot of refresh flicker(enough to give me a headache).

If I run in 720x480Over, these problems disappear, however due to the Over
scaling video playback is no longer smooth and looks bad.  When using
720x480BNoscale, playback is smooth, but the refresh causes the flicker and
the top has the "green".

Thin white lines and other white object you can notice a flicker, also it
seems to affect all the pixels across the screen, so you can see a
difference in the screen along the horizontal where the flickering is taking
place.

The green fade takes about 15-25% of the top of the screen.  I am not to
sure if it really is green, but when there is a blue background, it is
noticably there as green, if I use a grey or black, it is not too
noticiable, but if you look close it is still there.

I have not been able to get a "screen shot" of it, my digital camera is
broken.

What else can I do to help resolve this problem, I will try out anything you
think might help.
I have compiled the latest SVN code and I have also tried the latest kelkoo
rpm package, both without success.

My System:
VIA EPIA MII1000
1G Memory
NTSC TV Only connected to S-Video, no other monitor
Running Fedora Core 5

Here is what I am using for options in xorg.conf

Section "Monitor"
        Identifier   "MonitorTV"
        VendorName   ""
        ModelName    "TV-NTSC"
        HorizSync    24.0 - 80.0
        VertRefresh  50.0 - 75.0
        DisplaySize  400 300

        #Refresh Rate 60Hz
        ModeLine "720x480" 26.7 720 736 808 896 480 481 484 497
        ModeLine "720x576" 32.7 720 744 816 912 576 577 580 597
        ModeLine "848x480" 31.5 848 864 952 1056 480 481 484 497
        ModeLine "856x480" 31.7 856 872 960 1064 480 481 484 497
        ModeLine "1024x512" 41.3 1024 1056 1160 1296 512 513 516 531
        ModeLine "1280x768" 80.1 1280 1344 1480 1680 768 769 772 795
        ModeLine "1440x1050" 126.2 1440 1536 1688 1936 1050 1051 1054 1087
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "via"
        VendorName  "Videocard vendor"
        BoardName   "S3 UniChrome"
        Option      "PciRetry" "true"
        Option      "ActiveDevice"  "TV"
        Option      "TVType"        "NTSC"
        Option      "TVOutput"      "S-Video"
        Option      "EnableAGPDMA" "true"
        Option "XvmcUsesTextures" "false"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "MonitorTV"
        DefaultDepth     24
        SubSection "Display"
                Depth     24
                Modes     "720x480Noscale"
        EndSubSection
EndSection

Section "DRI"
        Group        0
        Mode         0666
EndSection

Thanks and let me know what I can do to help, I do not know how to code
drivers, but I can apply patches and compile anything that is needed.

Jake
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