xrandr not detecting S-Video connection

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage . I have classified this bug as a bug in xrandr.

Please attach your X server configuration file (/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.0.log) to the bug report as individual uncompressed file attachments using the "Attachment:" box below. Could you please also try to run without any /etc/X11/xorg.conf and let Xorg autodetect your display and video card? Please also attach the /var/log/Xorg.0.log from this attempt. Thanks in advance.

The S-video cable is able to be detected using the following command
xrandr --output S-video --set load_detection 1
It would be nicer if one did not have to do this command.

If I use the mirror option I can get the same output on the LCD and TV.
If I use dual monitor with the LCD as screen 0 and the TV as screen 1, the laptop becomes unresponsive.
There is also obvious corruption on the TV screen's output in dual monitor mode.
The laptop is still accessible remotely via SSH, and "/etc/init.d/gdm restart" via the ssh session brings the system back to life.

This is using the open source radeon drivers.

Hi james-superbug,

Please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.

Please attach the output of `lspci -vvnn` too.

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Hmm, not sure if this is a peculiarity of your hardware or a general problem, but fairly sure it's a driver issue in any case. See http://bugs.freedesktop.org/show_bug.cgi?id=16186 for example.

Please provide the information requested in the previous comment, and as well the output of xrandr --verbose and 'sudo get-edid|parse-edid' with the TV connected.

I have the same behavior on my Asus M6Ne with Mobility 9700 Radeon. xrandr -q says S-video disconnected even though it's actually connected. I've tried on both the Intrepid 8.10 LiveCD and a recent Jaunty 9.04 beta.

lspci -vvnn output

Using the --set command from jcdutton's comment works; xrandr then reports that the S-video is connected. I can then use the Display tool to enable the display and extend my desktop onto it. But the TV display starts out with a hash; you can see ghosts of the main laptop display sprayed across it and a lot of other garbage. Dragging a window from the main laptop display over to the TV display seems to draw correctly, and moving the window back off the TV leaves a correct background drawn in place, except for the rightmost ~200 pixels or so. Those remain a ghost trail of the window that was dragged over.

Interestingly, dragging the movie player over to the TV and then switching it to fullscreen mode works fine. But when exiting fullscreen mode, the same rightmost ~200 pixels are still garbage.

same problem with kubuntu 9.04

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

The #14 Xorg.0.log shows X loading. Then running xrand
xrandr --output S-video --set load_detection 1

I just noticed something that may be the cause of my problem.
(II) RADEON(0): Default TV standard: NTSC
(II) RADEON(0): TV standards supported by chip: NTSC

I have a PAL TV here in the UK.
In windows, I can set PAL and the output is fine.
It seems that in Linux I cannot set PAL.