Hello, thank you for answer. Problems occurs on all channels and don't depend on number of channels used. I have tried to run only one channel, but it didn't help. I bought this card from dx.com for 65$. May be, I'll be able to provide access to my testing system with this card, if it is enought. Regards Radek Masin Dne Po, 07/23/2012 02:20 odp., Devin Heitmueller <dheitmueller@xxxxxxxxxxxxxx> napsal(a): > On Mon, Jul 23, 2012 at 3:40 AM, Radek Mašín <radek@xxxxxxxx> wrote: > > Hello, > > may be one more problem. I use Zoneminder software for capturing pictures from card and occasionally > > I get corrupted picture. Please take a look for attached files. > > Looks like the IRQ handler wasn't servicing fast enough, causing parts > of a frame to get dropped. Does this only happen when you have a > bunch of streams running in parallel? > > This sort of performance issue would be very difficult to debug > without one of the developers having a board. From what I understand > the code provided by Conexant was merged essentially as-is (with some > codingstyle cleanups and zero testing), with no upstream developers > actually having the hardware. > > You're probably out of luck unless you're willing to pay somebody to > get a board and debug the problem. > > Devin > > -- > Devin J. Heitmueller - Kernel Labs > http://www.kernellabs.com > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html