Oddness on upgrading

[Toby A Inkster <mail@xxxxxxxxxxxxxxxxx>]

Dear all,

I've recently upgraded Zapping and a bunch of other things (libzvbi, X,
but NOT my kernel) as part of a move from Mandrake 10.0 to 10.1.

Since doing this, video has displayed very strangely in both Zapping and
XawTV. Allow me to describe the effect:

        * the bottom half of the screen is cyan with stripes of what
        looks like interference across it.
        
        * the picture is not cropped, but compressed into the top half
        of the screen, and is of a poorer than usual quality.
        
        * when I change channels, the TV becomes silent.
        
        * however, if I hit "f" to put Zapping into full screen mode,
        the picture is perfect, no large cyan area and the sound comes
        back.
        
        * putting Zapping into capture mode crashes it, which is why I
        can't post screen shots.
        
        * running Zapping with "--no-xv" fails with this error message:
        "[tveng.c: 1201: round_boundary_4] This should have never been
        reached"

These same problems effect Zapping and XawTV. I then downgraded Zapping
back to my old version and the problem continued! So I guess the problem
lies with something Zapping "talks to" -- X? libzvbi?

Oddly, running XawTV with this command line:

	xawtv -c /dev/video1

seems to fix all those problems, but doing the equivalent with Zapping:

	zapping --device /dev/video1

does not fix the problems.

For now, I'm using XawTV, but I'd like to solve the problem properly. I
have *no* idea where the problem lies.

Any ideas?

Linux 2.4.25-9mdksmp
xawtv 3.93
zapping 0.7
libzvbi 0.2.8
X.org X11 6.7.0
Graphics card: ATI Mach64
Monitor: Dell P790
CPU: Dual Pentium III (Coppermine) 1 GHz

from /proc/pci:

  Bus  2, device   8, function  0:
    Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 2).
      IRQ 16.
      Master Capable.  Latency=66.  Min Gnt=16.Max Lat=40.
      Prefetchable 32 bit memory at 0xf7b00000 [0xf7b00fff].
  Bus  2, device   8, function  1:
    Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 2).
      IRQ 16.
      Master Capable.  Latency=66.  Min Gnt=4.Max Lat=255.
      Prefetchable 32 bit memory at 0xf7c00000 [0xf7c00fff].

any other info needed??

-- 
Toby A Inkster BSc (Hons) ARCS
Contact Me  ~ http://tobyinkster.co.uk/contact

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