[mythtv-users] tv-out black and white only

[Stefan G. Weichinger]

Greets,

yesterday my old tv-set blew up, so I got another old one today.

Plain old box (Grundig ST 70-745) ... I don't need much because I only
record and watch DVB-S via mythtv.

My former TV-set was connected via composite video: 3 rca-plugs into the
front.

The "new" one only has scart input on the rear, so I used an adapter to
plug in the 3 rca-plugs into the adapter and that into the tv-set.

On the frontend I use the yellow S-video output and an adapter from
audio jack two red/white RCA plugs.

My mythfrontend boots gentoo via PXE and comes up fine, I see colors
when the init-scripts start up (those little [ok]s).

The frontend itself is old hardware as well and uses a Nvidia GeForce2
MX/MX 400 for tv-out. This worked fine for years now (until the very
moment the old tv-set blew up yesterday ...)

But now I don't get colors within X/mythtv. I tried some different
cabling (there is an S-video out on the card and an S-video input on
that adapter, I have a s-video cable and another adapter from the yellow
RCA to S-video ....)

I also started fiddling with xorg.conf and googling around ...

As far as I understand the hardware should be OK: if the linux CLI shows
colors the hw should be capable of transporting the color-information?

Could anyone point out anything on how to proceed?

Thanks a lot!

Stefan

Attached parts of xorg.conf.

-->

Section "Monitor"
    Identifier     "Mon1"
    VertRefresh     60.0
    HorizSync       30-50
EndSection

Section "Device"
    Identifier     "Vc1"
    Driver         "nvidia"
EndSection

Section "Screen"
    Identifier     "Screen 1"
    Device         "Vc1"
    Monitor        "Mon1"

    Option     "UseEDID" "FALSE"
    Option     "ConnectedMonitor" "TV"
    Option "TVStandard" "PAL"
#Option     "TvOutFormat" "SVIDEO"
Option     "TvOutFormat" "COMPOSITE"
    Option      "AddARGBGLXVisuals" "True"
EndSection