[MPlayer-matrox] mga_vid_test works but mplayer does not

[swen]

Hi all,
when I start mga_vid_test it displays the expected stuff on my tv but if I start
mplayer (e.g. "mplayer -vo mga -fs /data/pics/davos0303/tst.avi") it fails the
following output:
-- start --
Testing MGA G400 Backend Scaler with 32 MB of RAM
mga_vid_base = 0xb7da4000
(1) There should be a green square, offset by 10 pixels from
    the upper left corner displayed
(2) There should be a cool mosaic like pattern now.
(3) There should be a color blend with black, red, purple, blue
    corners (starting top left going CW)
data:/home/swen# mplayer -vo mga -fs /data/pics/davos0303/tst.avi
MPlayer 0.93-3.3.5  (C) 2000-2003 MPlayer Team
CPU: Intel  (Family: 8, Stepping: 9)
Detected cache-line size is 64 bytes
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with Runtime CPU Detection - WARNING - this is not optimal!
To get best performance, recompile MPlayer with --disable-runtime-cpudetection
Reading config file /etc/mplayer/mplayer.conf
Reading config file /root/.mplayer/config
Reading /root/.mplayer/codecs.conf: can't open '/root/.mplayer/codecs.conf': No
such file or directory
Reading /etc/mplayer/codecs.conf: can't open '/etc/mplayer/codecs.conf': No such
file or directory
Using built-in default codecs.conf
Font /root/.mplayer/font/font.desc loaded successfully! (206 chars)
Using Linux hardware RTC timing (1024Hz).
Can't open input config file /root/.mplayer/input.conf: No such file or directory
Can't open input config file /etc/mplayer/input.conf: No such file or directory
Falling back on default (hardcoded) input config

Playing /data/pics/davos0303/dscf0001.avi
AVI file format detected.
VIDEO:  [MJPG]  320x240  24bpp  15.00 fps  1845.7 kbps (225.3 kbyte/s)
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 8000 Hz, 1 ch, 8 bit (0x8), ratio: 8000->8000 (64.0 kbit)
Selected audio codec: [pcm] afm:pcm (Uncompressed PCM)
==========================================================================
Error opening/initializing the selected video_out (-vo) device.

-- end --

I currently try it as root to avoid any permission problems before the other
problems are resolved.

Any ideas whats missing? If I understand it correclty the config files are just
optional and the (internal) defaults should be ok.

Thanks,

  Swen