dvgrab not grabbing

[Martin C. <ma...@mk...>]

I am trying to grab DV from a Canopus ADVC-110 through a VIA VT6306
interface built into my Asus AMD motherboard.
Everything appears to work; dvgrab 3.5 can tell when I press play on my
VCR but it does not save a file or send DV to stdout. When I stop
capturing it flips the Canopus to digital input so there is some kind of
communication happening.
ffmpeg -f iec61883 does not work either, no errors other than
"libiec61883 error: Failed to get channels available." which I gather is
normal.

I am running Sparky Linux which is based on Debian testing.

$ uname -a


Linux thoth 4.11.0-1-amd64 #1 SMP Debian 4.11.6-1 (2017-06-19) x86_64
GNU/Linux

$ lsmod | grep -e 1394 -e firewire


firewire_sbp2          24576  0



firewire_ohci          40960  0



firewire_core          65536  2 firewire_sbp2,firewire_ohci



crc_itu_t              16384  2 rt73usb,firewire_core



scsi_mod              217088  7
firewire_sbp2,sd_mod,libata,scsi_transport_spi,sr_mod,sg,sym53c8xx

I manually loaded firewire_sbp2.

$ grep -e 1394 -e firewire /var/log/syslog
Aug  9 22:17:34 thoth kernel: [118687.861697] firewire_ohci
0000:04:08.0: isochronous cycle inconsistent
Aug  9 22:17:34 thoth kernel: [118688.380695] firewire_core
0000:04:08.0: created device fw1: GUID 00201101150049d8, S400
Aug  9 22:17:34 thoth kernel: [118688.380814] firewire_core
0000:04:08.0: phy config: new root=ffc1, gap_count=5
Aug  9 22:17:34 thoth kernel: [118688.381043] firewire_core
0000:04:08.0: IRM is not 1394a compliant, making local node (ffc0) root
Aug  9 22:17:34 thoth kernel: [118688.381046] firewire_core
0000:04:08.0: phy config: new root=ffc0, gap_count=5
Aug  9 22:17:46 thoth kernel: [118699.693242] firewire_core
0000:04:08.0: phy config: new root=ffc1, gap_count=5
Aug  9 22:17:46 thoth kernel: [118699.864283] firewire_core
0000:04:08.0: phy config: new root=ffc1, gap_count=5
Aug  9 22:17:46 thoth kernel: [118700.219950] firewire_core
0000:04:08.0: rediscovered device fw1
Aug  9 22:17:46 thoth kernel: [118700.356102] firewire_core
0000:04:08.0: phy config: new root=ffc1, gap_count=5
Aug  9 22:24:03 thoth kernel: [119076.678976] dumpiso[5628]: segfault at
0 ip 00007f65c3410a37 sp 00007ffd175ed590 error 6 in
libraw1394.so.11.1.0[7f65c3406000+f000]
Aug  9 22:24:24 thoth kernel: [119097.702687] dumpiso[5651]: segfault at
0 ip 00007f6374ce2a37 sp 00007ffd400664a0 error 6 in
libraw1394.so.11.1.0[7f6374cd8000+f000]
Aug  9 22:25:16 thoth kernel: [119149.516879] firewire_core
0000:04:08.0: refreshed device fw0
Aug  9 22:25:20 thoth kernel: [119154.504739] firewire_core
0000:04:08.0: refreshed device fw0

$ lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] RS880 Host Bridge
00:01.0 PCI bridge: ASUSTeK Computer Inc. AMD RS780/RS880 PCI to PCI
bridge (int gfx)
00:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI
to PCI bridge (PCIE port 4)
00:0a.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI
to PCI bridge (PCIE port 5)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 SATA Controller [IDE mode]
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.1 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB
OHCI1 Controller
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.1 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB
OHCI1 Controller
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus
Controller (rev 3c)
00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 IDE Controller
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00
Azalia (Intel HDA)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 LPC host controller
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to
PCI Bridge
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h
Processor HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h
Processor Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h
Processor DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h
Processor Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h
Processor Link Control
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] RS880 [Radeon HD 4250]
01:05.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RS880 HDMI
Audio [Radeon HD 4200 Series]
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
03:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host
Controller (rev 03)
04:05.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1010
Ultra3 SCSI Adapter (rev 01)
04:05.1 SCSI storage controller: LSI Logic / Symbios Logic 53c1010
Ultra3 SCSI Adapter (rev 01)
04:08.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire
II(M)] IEEE 1394 OHCI Controller (rev c0)

dumpiso segfaulting suggests there's something wrong in the software,
but that is the only other anomaly I have noticed so far. How can I get
it working or track down the bug?

Martin