[AG-TECH] vic gui freezes...
lujian at nlsde.buaa.edu.cn
Sun May 5 11:54:32 CDT 2002
We also had the problem before. we found the problem may comes from the bt8x8 drivers which drive your capture card.
Because of the problem, the VIC freezes for a long time, and stop sending RTCP Cname data, so the cname data refreshes very slowly in receiver sides.
I remember we took two metheds:
1. short term solution: put the default Vic sending framerate to 30fps.
2. long term solution: check your capture card, see if it has just one crystal unit 28.6Mhz, then replace it with a new capture card that has the crystal unit of 35.4Mhz. it works.
if your capture card always captures "mis-colored" wrong images, you can edit your /etc/modules.conf, and add the following line:
options bttv pll=1(,1,1, if you have multiple cards).
we are trying to fix a problem, that we are facing since the very
beginning of our AG activity, and that stayed with us throughout various
changes in AG software and OS releases:
whenever we start several vic instances on our capture machine with the
AG default frame rate / bandwidth values, the gui freezes after some
seconds. Video transmission is ok, but we have no chance to change the
settings of a specific video stream unless we restart the vic.
The problem disappears when we start with the low transmission/frame
rates of the ucl-vic defaults.
conflicting interrupts dont seem to be a problem here:
ag at ag-vin:~> cat /proc/interrupts
0: 200243 199649 IO-APIC-edge timer
1: 1035 1003 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
3: 18120 18213 IO-APIC-level bttv
4: 18906 18747 IO-APIC-level bttv
8: 1 1 IO-APIC-edge rtc
10: 21250 21610 IO-APIC-level bttv
11: 1011645 1012826 IO-APIC-level eth0
12: 78269 77369 IO-APIC-edge PS/2 Mouse
14: 3605 3788 IO-APIC-edge ide0
15: 2 3 IO-APIC-edge ide1
NMI: 0 0
LOC: 399801 399799
We are currently running SuSE. 7.3 on a dual Pentium III 866 MHz, but we
observed the same problems under the AG RedHat Release.
Any help would be greatly appreciated.
Forschungszentrum Juelich / Zentralinstitut fuer Angewandte Mathematik
D 52425 Juelich Tel/Fax : +49 2461 61 6411/6656
_______________________________ M.Sczimarowsky at fz-juelich.de __________
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