Public bug reported:
Tv-out (s-video) setup requires manual xrandr commands.
Using the open source drivers for the at-9250 - lspci reports 01:00.0 VGA
compatible controller: ATI Technologies Inc RV280 [Radeon 9200 PRO] (rev 01)
In order to let it detect S-video displays you need to manually call the
following command, otherwise no s-video output is detected at all.
xrandr --set load_detection 1
Then using the normal screen resolution tool (or xrandr manually) lets
you set up the tv-out output.
This is inconvenient if i want to use an s-video display normally, and
really annoying if i want to use only an s-video display - X will not
auto-configure it.
There is supposed to be work-around of the following entries in xorg.conf, but
if i do that it behaves strangely. If i have both an s-video output and a
monitor i get the monitor behaving correctly plus a black and white s-video
display showing a small part of the screen. If i unplug the monitor and use
only the s-video out i get garbage on the s-video output - it's detected
something, but it's not comprehensible.
Section "Device"
...
Option "TVDACLoadDetect" "TRUE"
EndSection
** Affects: xserver-xorg-driver-ati (Ubuntu)
Importance: Undecided
Status: New
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no tvout on ati 9250
https://bugs.launchpad.net/bugs/249232
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