Re: [GnomeMeeting-list] Camera problems

[Andy Fraser <andy FraserPhysics com>]

>>>>> "DS" == Damien Sandras <dsandras seconix com> writes:

    DS> Le mardi 28 septembre 2004 à 01:22 -0700, Andy Fraser a écrit
    DS> :
    >> >>>>> "DS" == Damien Sandras <dsandras seconix com> writes:
    >> 
    DS> Then try to report a full backtrace so that we can fix any
    DS> possible problem.
    >>  How do I get a backtrace?
    >> 


    DS> run gnomemeeting inside gdb gdb gnomemeeting run when it
    DS> crashes, type : thread apply all bt and report the output
    DS> here.

    DS> Make sure you have run qcset as it is a cause of crash during
    DS> calls.

I quit working on the problem and taught Information Theory for a
while, but now I want to get back to the camera problem.  I've run GM
under gdb and I get complaints that there are no symbols, ie,

(gdb) run
Starting program: /usr/bin/gnomemeeting
(no debugging symbols found)...(no debugging symbols found)...

Must I compile GM from sources with the -g option, or is the following
useful?

I believe that the problem is in the USB driver or hardware because
I've tried three different cameras that use quickcam, pwc, and ov511
drivers, and I have similar trouble with each.  I can use GM on my own
machine which uses ohci_hcd.  The problem is on my son's machine which
uses uhci_hcd for 
"Product=VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller"

In any case, here is the result of "thread apply all bt" after killing
GM after it freezes:


Program received signal SIGINT, Interrupt.
[Switching to Thread -1239529152 (LWP 12723)]
0xb6878d25 in poll () from /lib/tls/libc.so.6
(gdb) thread apply all bt

Thread 6 (Thread -1276150864 (LWP 12741)):
#0  0xb6878d25 in poll () from /lib/tls/libc.so.6
#1  0xb784eb06 in g_main_loop_get_context () from /usr/lib/libglib-2.0.so.0
#2  0xb784df40 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#3  0xb784e603 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#4  0xb78e8eb2 in link_thread_io_context () from /usr/lib/libORBit-2.so.0
#5  0xb7867bad in g_static_private_free () from /usr/lib/libglib-2.0.so.0
#6  0xb6aea9b4 in start_thread () from /lib/tls/libpthread.so.0
#7  0x00000000 in ?? ()

Thread 5 (Thread -1267762256 (LWP 12740)):
#0  0xb687b3e7 in select () from /lib/tls/libc.so.6
#1  0xb6d2330b in PThread::PXBlockOnIO () from /usr/lib/libpt.so.1.6.6
#2  0xb6d08c37 in PChannel::PXSetIOBlock () from /usr/lib/libpt.so.1.6.6
#3  0xb6ce76a2 in PSocket::os_accept () from /usr/lib/libpt.so.1.6.6
#4  0xb6ce2145 in PTCPSocket::Accept () from /usr/lib/libpt.so.1.6.6
#5  0xb7499a63 in H323ListenerTCP::Accept ()
   from /usr/lib/libopenh323.so.1.13.5
#6  0xb7499f86 in H323ListenerTCP::Main () from /usr/lib/libopenh323.so.1.13.5
#7  0xb6d22feb in PThread::PX_ThreadStart () from /usr/lib/libpt.so.1.6.6
#8  0xb6aea9b4 in start_thread () from /lib/tls/libpthread.so.0
#9  0x00000000 in ?? ()

Thread 4 (Thread -1258943568 (LWP 12737)):
#0  0xb6aef4d1 in __read_nocancel () from /lib/tls/libpthread.so.0
#1  0xb61dcda0 in PVideoInputV4lDevice::NormalReadProcess ()
   from /usr/lib/pwlib/device/videoinput/v4l.so
#2  0xb61dcb73 in PVideoInputV4lDevice::GetFrameDataNoDelay ()
   from /usr/lib/pwlib/device/videoinput/v4l.so
#3  0xb61dc8bb in PVideoInputV4lDevice::GetFrameData ()
   from /usr/lib/pwlib/device/videoinput/v4l.so
#4  0xb6ce5f6b in PVideoChannel::Read () from /usr/lib/libpt.so.1.6.6
#5  0x08096d1b in GMVideoGrabber::Main ()
#6  0xb6d22feb in PThread::PX_ThreadStart () from /usr/lib/libpt.so.1.6.6
#7  0xb6aea9b4 in start_thread () from /lib/tls/libpthread.so.0
#8  0x00000000 in ?? ()

Thread 3 (Thread -1248994384 (LWP 12730)):
#0  0xb687b3e7 in select () from /lib/tls/libc.so.6
#1  0xb6d20f59 in PHouseKeepingThread::Main () from /usr/lib/libpt.so.1.6.6
#2  0xb6d22feb in PThread::PX_ThreadStart () from /usr/lib/libpt.so.1.6.6
#3  0xb6aea9b4 in start_thread () from /lib/tls/libpthread.so.0
#4  0x00000000 in ?? ()

Thread 2 (Thread -1240605776 (LWP 12727)):
#0  0xb6aed115 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/libpthread.so.0
#1  0xb6d245f5 in PSyncPoint::Wait () from /usr/lib/libpt.so.1.6.6
#2  0xb7450036 in H323ConnectionsCleaner::Main ()
   from /usr/lib/libopenh323.so.1.13.5
#3  0xb6d22feb in PThread::PX_ThreadStart () from /usr/lib/libpt.so.1.6.6
#4  0xb6aea9b4 in start_thread () from /lib/tls/libpthread.so.0
#5  0x00000000 in ?? ()

Thread 1 (Thread -1239529152 (LWP 12723)):
#0  0xb6878d25 in poll () from /lib/tls/libc.so.6
#1  0xb784eb06 in g_main_loop_get_context () from /usr/lib/libglib-2.0.so.0
#2  0xb784df40 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#3  0xb784e603 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#4  0xb7c434e3 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#5  0x080ae8d7 in main ()


-- 
Andy Fraser                                      Fraser Physics
andy FraserPhysics com                           3030 SW Sherwood Place
(503) 417-1705                                   Portland, OR 97201-2253