I have a freshly installed (zoneminder liveCD) and freshly updated Mandrake 9.2 install on a Compaq EN SFF PII-400.

I have two Hauppauge ImpactVCB 64405 878 based capture cards installed. Both cards work fine as /dev/video0 (tested by swapping slots) under either Mandrake or RH9 (I tried that first) and under NT4, (but the "detect multiple cards" option in the windows configure was flaky - it worked on initial install, but when I tried the Osprey 100 drivers, I couldn't get it to work again. Either card works perfectly in PCI slot 1, but problematically in PCI slot 2. I'd call that a semi-success in Windows, making the Linux problems all the more vexing.)

The card configuration (model #, revs, SN's, slots) is here

Under Mandrake (and similarly under RH9, though motv /dev/video1 soon crashed xwindows, probably a config problem in Xwindows, fixed by switching to Mandrake and not using the latest Mach64 DRI experimental) I cannot get XAWTV to show the video from /dev/video1. The window opens fine, but it stays black, then every 10 seconds or so, a few scan lines of video get written. They appear to be correct, though it has never written far enough to fill in the other half of the interlace - just every other scan line, about 10-20 of them after a few minutes.

The output of 'xawtv -v 2 -hwscan' is here.

there's nothing I can see which would indicate why one card would work and the other not.

The output of 'xawtv -v 2 -c /dev/v4l/video0' is here. And a screen grab.

This seems to work fine. There are some inaccuracies in the naming of the ports but otherwise it works as expected.

The output of 'xawtv -v 2 -c /dev/v4l/video1' is here. And a screen grab.

This doesn't work, alas. The camera is the same. This is typical output - a few random scan lines. If I move the window around, sometimes the scan lines draw in little 1x16 or so pixel glitches in random locations on the screen. If I click in the window sometimes a few more scan lines draw, sometimes they vanish.

Curiously, with the -noxv option, the display is slightly better, but still wrong (more scan lines get drawn, if I move the window I can get a complete, but not live image) but the captures from XAWTV seem to be perfect (capture won't work without -noxv).

I CSDIFFed the files, and there's a pretty HTML coded version of the output, but I'm not sure what it means... but it looks nice. The bits that look curious are lines 232-245 and 429-633 (where the scan lines were being written a bit at a time).

Other potentially useful bits of information may be hidden within these relevent excerpts of:

The messages and syslogs, The kernel logs, and the ksyms log.

Compaq's hardware reference (pdf, 1.3MB) has some details on the PCI configuration, which might be useful.

Any hints would be very much appreciated.

Thanks,
-David