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Date:      Thu, 16 Oct 1997 08:57:15 -0500 (CDT)
From:      Alex Nash <nash@Mcs.Net>
To:        freebsd-multimedia@freebsd.org
Subject:   fxtv 0.45
Message-ID:  <Pine.BSF.3.95.971016085658.2547F-100000@Venus.mcs.net>

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I'm having a problem with fxtv 0.45, the latest bt848 driver
(2.2-stable as of about two days ago), and WinCast/TV dbx.
Specifically, fxtv dumps core.  Here's what I got from gdb:

  Starting program: /tmp/fx/./fxtv 
  Xlib:  extension "XFree86-DGA" missing on display ":0.0".
  Xlib:  extension "XFree86-VidModeExtension" missing on display ":0.0".
  Warning: Actions not found: TVSetChannel
  
  Program received signal SIGBUS, Bus error.
  0x17e1b in TVSCREENGetCurVidModeGeometry (s=0x63860, width=0xefbfd662,
  height=0xefbfd660) at tvscreen.c:180
  
  (gdb) print *s
  $1 = {display = 0x6b800, screen = 0, visual = 0x74a00, visual_modes =
  0x7e0e0, num_visuals = 3, active_visual = 2, fb_visual = 0x74800,
  base_addr = 0, pitch = 0, bank_size = 0, ram_size = 0,
  vmode_ext_supported = 0, vmode_majv = 0, vmode_minv = 0, vm_list =
  0x0, vm_list_len = 0, vm_startup = 0}

Line 180 attempts to dereference vm_list, which is NULL.  What I don't
know, is why vm_list is NULL.

The card appears to work properly under Windows (after I yanked out my
SMC network card :).  Also, I briefly had a version of fxtv 0.44 which
would start up and display static, but could not be coaxed into
displaying anything from my VCR.  I thought this might be a
kernel/user level mismatch (the program was built against older
sources), so I grabbed 0.45 to get everything in sync.

Any ideas would be greatly appreciated.

Alex





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