Version:            (using KDE 4.3.0)
OS:                Linux
Installed from:    Debian testing/unstable Packages

Steps to reproduce:
- select a video file
- press play in the preview area in the information panel
- the movie starts playing I head the sound, but I do not see the video

I am using the xine phonon backend. I tried with different video formats including mpg files from a DVD.

This might be related to bug #203759 where dragonplayer doesn't show videos when not in full screen mode. AFAIR this didn't happen with KDE 4.3 RC2 debian packages. For sure it worked with KDE 4.2.4 debian packages.

I am using these debian packages:

martin@shambhala:~> apt-show-versions | egrep "(phonon|kdelibs|dragon|dolphin|xine|xserver-xorg-video-radeon|xserver-xorg-core/)"
dolphin/sid uptodate 4:4.3.0-1
dragonplayer/sid uptodate 4:4.3.0-1
kdelibs/squeeze uptodate 4:3.5.10.dfsg.1-2
kdelibs-bin/sid uptodate 4:4.3.0-1
kdelibs-data/squeeze uptodate 4:3.5.10.dfsg.1-2
kdelibs-dbg/squeeze uptodate 4:3.5.10.dfsg.1-2
kdelibs4c2a/squeeze uptodate 4:3.5.10.dfsg.1-2
kdelibs5/sid uptodate 4:4.3.0-1
kdelibs5-data/sid uptodate 4:4.3.0-1
kdelibs5-dbg/sid uptodate 4:4.3.0-1
kdelibs5-dev/sid uptodate 4:4.3.0-1
libphonon-dev/sid uptodate 4:4.5.2-1
libphonon4/sid uptodate 4:4.5.2-1
libxine1/sid uptodate 1.1.16.3-1+b2
libxine1-bin/sid uptodate 1.1.16.3-1+b2
libxine1-console/sid uptodate 1.1.16.3-1+b2
libxine1-dbg/sid uptodate 1.1.16.3-1+b2
libxine1-ffmpeg/sid uptodate 1.1.16.3-1+b2
libxine1-misc-plugins/sid uptodate 1.1.16.3-1+b2
libxine1-plugins/sid uptodate 1.1.16.3-1
libxine1-x/sid uptodate 1.1.16.3-1+b2
libxinerama-dev/lenny uptodate 2:1.0.3-2
libxinerama1/lenny uptodate 2:1.0.3-2
phonon/sid uptodate 4:4.5.2-1
phonon-backend-gstreamer/sid uptodate 4:4.3.1-4
phonon-backend-xine/sid uptodate 4:4.3.1-4
phonon-dbg/sid uptodate 4:4.5.2-1
x11proto-xinerama-dev/lenny uptodate 1.1.2-5
xine-ui/squeeze uptodate 0.99.5+cvs20070914-2.1
xserver-xorg-core/sid uptodate 2:1.6.3-1+b1
xserver-xorg-video-radeon/sid uptodate 1:6.12.2-3
xserver-xorg-video-radeonhd/sid uptodate 1.2.5-1

on a ThinkPad T42 with

martin@shambhala:~> lspci -nn | grep VGA
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV350 [Mobility Radeon 9600 M10] [1002:4e50]