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First, not all models of TW68xx cards have the TV-Out capability. Second, at the moment the driver sets the output to be "Channel 0", and does not offer any capability to switch the output to a different channel. I may try to implement something in the future, but that is a rather low prio...

Your own description practically answers the question - it is referred to as a "so called 4ch card" because it is actually only a single device with 4 input channels which can be individually selected. All of the four input connectors go to the single TW68 chip, and the driver routes them ...

I understand your frustration, but hope you can understand my perspective. The driver is distributed in source form, because it is not yet a built-in part of the Linux kernel. The user must compile the driver under his particular operating system. The compilation process results in a "kernel mo...

davjo - For the 'warning' please see my reply to iddqd. If you have an 8-chip card, that will give you 8 separate devices (/dev/video0 .... /dev/video7 if there are no other video interfaces). Depending upon the particular card, the manufacturer might advertise it as "16 channels" and prov...

Please refer to the topic http://www.zoneminder.com/forums/viewtopic.php?t=14588

Bill

iddqd - This looks like a problem within the particular OpenSuSe kernel that you are using, since the kernel symbol "preempt_schedule" is missing. I will continue searching through reports for other drivers, but in the mean time could you please try updating your kernel to a later release?...

moorsey, antov and others with TW6800 chips: Thanks to some good work by robby in helping to debug problems, the driver's handling of the TW6800 has been improved. It's still not doing as well as with the TW6802 and TW6805, but is progressing. The source for the improved code is at http://gitorious....

I made a few changes to the handling of the switching of video input which will (hopefully) improve the driver's handling of single-chip boards with multiple inputs, as well as correct a few minor problems. I also updated the Version Number of the driver to be Version 0.0.3. As usual, the updated so...

whatboy,

uhhh... perhaps "rmmod tw68" to remove the one already installed?

Bill

robby, Thanks for the further info on the tw6800. That card's very difficult for me, because I don't have any card with that chip for testing (mine are all tw6802 and tw6805). The timeout messages are certainly a problem, but I'm pretty sure that's the same problem others are reporting (and I'm curr...

I found another control register on the TW68xx which has a big effect on the resynchronization after switching the chip's input, and I adjusted the initialisation of that register. The updated source is on gitorious.org/tw68. For multiple cameras per chip, it will be necessary to set the variable CA...

whatboy, I assume (from the 30fps) that you're running 2 NTSC cams on 2 chips for your current testing. How about your "options"? bensttech pointed out to me a post in another forum suggesting setting options, "config" tab, CAPTURES_PER_FRAME to a higher value. When I experiment ...

jamhed and whatboy, Don't get confused between chips and channels. A TW68xx chip can handle up to 4 inputs (that's why the driver labels them 'Composite 1' through 'Composite 4'). Board manufacturers like to talk about "Channels" (it sounds better). A single-chip card is often advertised a...

Good news for those affected by "ghosting", or interference between channels - thanks to some really great hardware debugging by bensttech, the problem has been fixed. Just update to the latest source from gittorious, recompile and reinstall, and all should be good (and let me know if this...

mooresey, Some bad news, I'm afraid. According to your lspci, your board is using TW6800 chips, while all of the other people posting have TW6802 or TW6805 chips. On my 4-chip TW6805 board, for instance, I get: [bill@bbsuper tw68-v2]$ lspci | grep 68 06:04.0 Multimedia video controller: Techwell Inc...