[Openchrome-users] 720x576Noscale does not work

[Udo van den Heuvel]

Hello,

On my VIA SP8000 I cannot get 720x576Noscale to work @ 24-bit color.
The result is a warped or wrapped picture.
It works fine at 16-bit color. Plain 720x576 does work @ 24-bit color.
Why Oh Why? I did check several sites but could not find the cure.
Below is parts of my xorg.conf, composed of info from surfing the web:

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "CTX VL700 series, MS700 series, PL7 series"
        DisplaySize  330        250
        HorizSync    30.0 - 70.0
        VertRefresh  50.0 - 75.0
        Option      "dpms"
EndSection

Section "Monitor"
        Identifier   "TV"
        VendorName   "Philips"
        ModelName    "Unknown"
        # Set for 4:3 display
        DisplaySize     400 300
        HorizSync    24.0 - 80.0
        VertRefresh  50.0 - 75.0
        Option      "nodpms"
        Option      "noddc"
        #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
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver "via"
        VendorName "VIA"
        BoardName "EPIA SP8000"
        BusID "PCI:1:0:0"

        Option "ActiveDevice" "CRT,TV" # CRT,
        Option "TVDotCrawl" "True"
        Option "TVType" "PAL"
        Option "TVOutput" "Composite"
        Option "EnableAGPDMA"   "true"
        Option  "PciRetry" "true"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "TV"
        DefaultDepth   24
        SubSection "Display"
                Viewport   0 0
                Depth     16
#               Modes    "800x600" "640x480"
#               Modes    "720x576"
                Modes    "720x576Noscale"
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
#               Modes    "800x600" "640x480"
                Modes    "720x576" # add for testing, does work
                Modes    "720x576Noscale" # this one gives warped image
        EndSubSection
EndSection

Anyone here that sees the cause of this weird (for me at least) behaviour?

Kind regards,
Udo