The cycle64Seconds interrupt is a regular interrupt caused by a timer of the FireWire chip. It is normal and intended (in this version of the kernel; kernel 3.6 does not enable this interrupt unless an application requests a certain register which depends on that timer).
The bus reset loop in comment 3, i.e. the cycling endlessly through generations 0...255 while the camcorder is connected, is indicating a problem low at the physical layer. Since we are talking about a camcorder from 1998 which implements IEEE 1394:1995 but not the amendment IEEE 1394a:2000, I first suspected that maybe the recent kernel drivers enable 1394a:2000 physical layer features too optimistically, so that the camcorder PHY is throwing a fit. However, seeing that a connection between PC and laptop does not succeed either, the most likely cause is rather a hardware defect of the cable or of the PC's card or (less likely) of the laptop's port. Here is how a successful bus reset with two nodes on the bus should look like, with firewire-ohci debug parameter set to 2: Sep 3 22:34:39 stein kernel: firewire_ohci 0000:0a:00.0: 2 selfIDs, generation 151, local node ID ffc1 Sep 3 22:34:39 stein kernel: firewire_ohci 0000:0a:00.0: selfID 0: 807fc494, phy 0 [p--] beta gc=63 -3W L Sep 3 22:34:39 stein kernel: firewire_ohci 0000:0a:00.0: selfID 0: 817f8972, phy 1 [-c.] S400 gc=63 +15W Lci (After this hardware-triggered bus reset with self-ID-complete event, one or a few more software-triggered bus resets and self-ID-complete events may follow when firewire-core or a remote node's firmware or system software reconfigures the bus or starts up the node's higher functions.) So the absence of a second self-identification packet on the PC and the absence of any interrupt at all on the laptop --- which both have 1394a:2000 compliant PHYs which are known to work with current Linux drivers --- show that defective hardware (e.g. the cable) is much more likely to be the culprit here than the drivers. If you try an older Ubuntu, best would be one which still has the ieee1394/ ohci1394/ raw1394 kernel drivers, i.e. with kernel 2.6.36 or older. I don't remember when these were removed from Ubuntu; distrowatch.com says at least that Ubuntu 10.10 had kernel 2.6.35. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1045047 Title: Firewire camera is not recognized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1045047/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
