tv-output on radeon 7000M using crtc 0

[Songmao Tian]

Hello,
   
    radeon vidix driver of Mplayer seems to use crtc 0,  so I want to 
force tv-out to use crtc 0, I issue the following command but failed.

loongson at debian:~/project/x-ati/xrandr/xrandr$ ./xrandr --output S-video 
--mode 640x480 --crtc 0
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  155 (RANDR)
  Minor opcode of failed request:  21 ()
  Serial number of failed request:  17
  Current serial number in output stream:  17

so how to fix it? I have been tracing the xrandr, but without good result.


btw, I have successfully dump a 640x480(NTSC) mode const from...windows xp.

    {
    640,                /* horResolution */
    480,                /* verResolution */
    TV_STD_NTSC,        /* standard */
    803,                /* horTotal */
    600,                /* verTotal */
    627,                /* horStart */
    665,                /* horSyncStart */
    512,                /* verSyncStart */
    408059,             /* defRestart */
    584,                /* crtcPLL_N */
    91,                 /* crtcPLL_M */
    6,                  /* crtcPLL_postDiv */
    1022,               /* pixToTV */
    },


Tian