#29 tv-off from command-line works differ than if using GUI

[monomakh]

Good day!

I have the following problem with botn nv/nvidia drivers:

I have GeForce 4 Ti 4200 VIVO (Philips 7108A tv encoder) card.
If I loading when my s-video cable is not plugged to videocard - than canvas is pure, all works fine.
If load linux when cable is connected than canvas looks bad: color depth seems low, refresh rate seems low too.
Even if TV is disabled - canvas in noise and dust.
(http://www.nvnews.net/vbulletin/showthread.php?t=83955)
I have found a workaround for normal disable of TV:

Here is a workaround:
Start Nvidia X server settings.
set twinview on TV-0
run nvtv tool
press F1 (TV on)
press F2 (TV off)
Now, picture is good!
now you can set disabled on TV-0 at Nvidia X server settings.

But its exhausting work to do this each time after start of linux. I want to automate this process using command-line options of nvtv. I configure x-server settings to twinview by default, so after start of X server nvtv can be runned.

BUT! If try to do the following:

nvtv --tv-on -r 640,480 -s Small
sleep 5
#nvtv -N -m -X -r 1280,1024
nvtv --tv-off

after tv-off i see only strange multicolor lines which moving if i try to type something on keyboard. I dont see my pure and good desktop as i see if press F2 from nvtv GUI.

Why nvtv --tv-off from command-line differ than from nvtv GUI? And if its possible which extend parameters needed to --tv-off for normal tv-off?