On Thu, 26 Jun 2003, Holger Kiehl wrote: > Hello > > I am having problems receiving multiple multicast channels with the > linuxtv drivers. With the help of this list I managed to receive data > with the KNC1, Skystar2 and Nova DVB-s cards. With tcpdump and iptraf > I can see that data does arrive on all channels. I use closed source software > from Tellique to receive the data and with strace I can see that they > use poll() to detect if data does arrive on any of the channel. With > the first channel this works without any problems. However if there is > data on the second or third channel poll() does not detect this. > I tested this with two separate pc's one with the [EMAIL PROTECTED] that > comes with its own driver and the other with the Nova-s and linuxtv > driver and both had the exact same copy of the tellique software and > setup. Then started the tellique software on both machines with > strace and started iptraf to make sure data comes in. As soon as there > is data on for example the second channel the poll() with the [EMAIL PROTECTED] > driver returns but the linuxtv driver poll() does nothing. > > Now I do not know if you do need to program the receiving software differently > to receive all channels with linuxtv driver since ifconfig does setup > a device for each channel, while the [EMAIL PROTECTED] only uses a single > device for all channels. If that is not the case then this looks like > a bug in the linuxtv driver. > > Please, what can I do to receive more then one multicast channel with > linuxtv? > The problem has been solved, it was necessary to give each interface a different IP address. My mistake was that I gave them all the same IP (blush, blush ...). So the linuxtv driver is working correctly.
Comparing linuxtv and Nova card with the [EMAIL PROTECTED] I can see that the interrupts caused is much lower with linuxtv, nearly half that of the [EMAIL PROTECTED] Good! But what has me worried is the high temperature of any of those cards, [EMAIL PROTECTED], nova, skytar2 or knc1. They are all quit hot. Makes me wonder if these cards are designed to operate 24 hours 7 days a week? One last question what is the meaning of the following messages in /var/log/messages: Jul 1 12:33:58 dwdsat2 kernel: dvb0_0: filter mac=00 d0 5c 22 43 40 I get them very frequently, how can I get rid of them? Thanks, Holger (Kiehl) -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
