[ivtv-users] Insertion erros when installing cx18
sofasurferlinux at charter.net
Thu Oct 16 06:23:52 CEST 2008
Thanks for your attempt to help me. I have just one more question at
I had loaded the cx18 driver twice before and dmesg did show that the
card was recognized. In fact, I actually did have video at one time. But
after making a mess out of my system I reinstalled everything and have
not been able to get the card recognized since.
So now after the information you gave me about pci buses, I tend to
believe that I have a hardware issue or something related to packages.
It now seems obvious to me that I did something to change my system that
is causing the problem. Does this sound reasonable to you?
My problem is that I can not remember what changes I may have made to my
Here is a list of possible changes that I wonder about. Please tell me
if any of these may be related to my problem.
I. Could the problem be related to using a differant kernel than I
2. Could it be that originally I used the live cd installation and now I
am using the alternate cd installation?
3. Could it be related to installing a second hard drive on my system
and at differant times I have it enabled or disabled?
4. Anything else you may be able to think of that I may have done
Thanks a million for your time,
Andy Walls wrote:
> So there's not much specific advice I can give at this point. Only some
> general advice:
> 1. You can try loading the module also specifying the mmio_ndelay
> parameter. It may not help (actually it shouldn't), but it's easy
> enough to try:
> $ sudo modprobe -r cx18
> $ sudo modprobe cx18 debug=67 retry_mmio=1 mmio_ndelay=243 enc_mpg_buffers=1 enc_ts_buffers=0 enc_vbi_buffers=0 enc_yuv_buffers=0 enc_pcm_buffers=0
> 2. If that doesn't help with the PCI MMIO read errors, then you need to
> start experimenting to find out what on the PCI bus is causing all the
> read errors: a particular card, device driver, or latency timer on a
> bridge are the things I would check. I might also try to disable
> message signaled interrupts, if that's feasible.
> Alternatively, can you try the card in another system and see if you get
> the same sort of behavior?
> 3. If you can resolve the PCI bus read errors, and the DVB frontend
> appears to register, and you still get -ENOMEM being returned, only then
> concentrate on trying to free up memory.
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