[Bug 298579] [NEW] dvgrab, Error: no camera exists

Sun Nov 16 02:22:47 UTC 2008

Public bug reported:

Binary package hint: dvgrab

plug in dv cam to firewire
dvgrab
Let record for a while (seems dependent on -buffers.)

Observed: output file stops growing.
Expected: keep saving till runs out of disk space.

hit ^C, dvgrab exits.  
run dvgrab again:
Error: no camera exists

dmesg
[ 6100.712604] ieee1394: raw1394: /dev/raw1394 device initialized
[ 6100.739458] NOTE: The dv1394 driver is unsupported and may be removed in a future Linux release. Use raw1394 instead.
[ 6496.912143] ieee1394: Node changed: 0-01:1023 -> 0-00:1023
[ 6496.913693] ieee1394: Node suspended: ID:BUS[0-00:1023]  GUID[008088030a613f59]
[ 7473.494115] ieee1394: Node resumed: ID:BUS[0-00:1023]  GUID[008088030a613f59]
[ 7473.496279] ieee1394: Node changed: 0-00:1023 -> 0-01:1023
[ 8638.124157] ieee1394: Node changed: 0-01:1023 -> 0-00:1023
[ 8638.125760] ieee1394: Node suspended: ID:BUS[0-00:1023]  GUID[008088030a613f59]

I was trying to reproduce a segfault, so I was running under gdb.  I
have seen this behavior when run from a prompt too.

juser at dhcp186:~/temp/dvgrab$ gdb dvgrab
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
(gdb) run -buffers 7
Starting program: /usr/bin/dvgrab -buffers 7
[Thread debugging using libthread_db enabled]
Found AV/C device with GUID 0x008088030a613f59
[New Thread 0xb7b266c0 (LWP 16947)]
[New Thread 0xb6edcb90 (LWP 16950)]
[New Thread 0xb663ab90 (LWP 16951)]
Warning: Cannot set RR-scheduler
Warning: Cannot disable swapping
Capture Started

"dvgrab-002.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:19:53
This error means that the frames could not be written fast enough.

"dvgrab-002.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:24:12
This error means that the frames could not be written fast enough.
"dvgrab-002.dv":   999.98 MiB  8738 frames timecode 00:1226794963:00.597172 date 2008.11.15 19:24:40
Warning: 20 dropped frames.                                                     

"dvgrab-003.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:26:33
This error means that the frames could not be written fast enough.

"dvgrab-003.dv": buffer underrun near: timecode 520:64:01.-1225932200 date 2008.11.15 19:26:38
This error means that the frames could not be written fast enough.
"dvgrab-003.dv":   999.98 MiB  8738 frames timecode 00:1226795255:00.597171 date 2008.11.15 19:29:31
Warning: 5 dropped frames.                                                      

"dvgrab-004.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:30:04
This error means that the frames could not be written fast enough.

"dvgrab-004.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:30:15
This error means that the frames could not be written fast enough.

"dvgrab-004.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:33:16
This error means that the frames could not be written fast enough.
"dvgrab-004.dv":   999.98 MiB  8738 frames timecode 00:1226795547:00.597173 date 2008.11.15 19:34:23
Warning: 8 dropped frames.                                                      

"dvgrab-005.dv": buffer underrun near: timecode 520:64:111633.04 date 2008.11.15 19:38:08
This error means that the frames could not be written fast enough.

^C
Program received signal SIGINT, Interrupt.
[Switching to Thread 0xb7b266c0 (LWP 16947)]
0xb808c430 in __kernel_vsyscall ()
(gdb) quit
The program is running.  Exit anyway? (y or n) y

juser at dhcp186:~/temp/dvgrab$ dvgrab           
Error: no camera exists

juser at dhcp186:~/temp/dvgrab$ lsb_release -rd
Description:	Ubuntu 8.10
Release:	8.10

juser at dhcp186:~/temp/dvgrab$ apt-cache policy dvgrab
dvgrab:
  Installed: 3.1-2.1
  Candidate: 3.1-2.1
  Version table:
 *** 3.1-2.1 0
        100 /var/lib/dpkg/status
     3.1-2 0
        500 http://cp333 intrepid/universe Packages

juser at dhcp186:~/temp/dvgrab$ uname -a
Linux dhcp186 2.6.27-7-generic #1 SMP Tue Nov 4 19:33:20 UTC 2008 i686 GNU/Linux

** Affects: dvgrab (Ubuntu)
     Importance: Undecided
         Status: New

-- 
dvgrab,  Error: no camera exists 
https://bugs.launchpad.net/bugs/298579
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