[mythtv-users] HDTV sound okay, but no video

[Sammo]

Athlon XP 2500+, ATI Radeon 9550, Twinhan Visionplus DVB-T
Linux 2.6.12.2
XFree86 4.3
ATI fglrx-4-3-0_8.14.13-2_i386 driver with fglrx kernel module
compiled and installed
Mythtv 18.1 compiled for athlon-xp

SD channels work fine, with around 18%cpu for mythfrontend and 2.5%cpu
for XFree86

HD channels have perfect audio, but NO VIDEO!! 48%cpu for mythfrontend
and 0.5%cpu for XFree86. If I change from a SD channel to a HD
channel, the last frame of the SD channel remains on the screen. When
I change back to a SD channel from a HD channel, the SD channel is
fine again.

Tried turning off de-interlacing, and tried using libmpeg2 for
decoding, but same problem.

Any ideas appreciated.

Thanks ...