Fw: [AG-TECH] Wierd problems with video using VIC in fedora 3/4

Natalia Costas Lago natalia at cesga.es
Sun Sep 4 09:23:17 CDT 2005

No idea about the real problem, just a suggestion... maybe of rebooting u can remove and reload the kernel module instead?.

I noticed the capture card u use has the c88xx chip; time ago (more than a year) I dealt with one of those, the driver was in 0.0.3 version by that time and I could hardly make it work (only with a kernel rebuild and much pain). I remember I posted my enquiries to ag-tech and more people did afterwards, search that thread (there are many concerning cx88 chip) to find some more information. Try a capture card with an 878 chip instead?.

Hope this helps,
Kind regards,
Natalia Costas Lago
email: natalia at cesga.es
Centro de Supercomputacion de Galicia (CESGA)
Avenida de Vigo, s/n Campus Sur 
15706 Santiago de Compostela - SPAIN
Tel:   +34  981 56 98 10 
Fax:  +34  981 59 46 16

  ----- Original Message ----- 
  From: Proshanta Saha 
  To: ag-tech at mcs.anl.gov 
  Sent: Saturday, September 03, 2005 7:36 AM
  Subject: [AG-TECH] Wierd problems with video using VIC in fedora 3/4


  I've been debugging a non-responsive vic window problem for days, what happens is that for the first 5 mins, I get perfect motion on all 3 cameras. All of a sudden one of them will freeze up. Stoping the session and staring it again causes vic to show a green window, and essentially render that capture card useless. Still works under tvtime, just not with vic. I am almost hitting a brick wall, ie. tried almost everything I could to find out if it was my server(dual core dell 380s), capture card (Hauppauge Winttv 401 c88xx version), linux (fedora 4), or the vic software. 

  Step 1: was making sure that the Wintv cards were all good, and had not problem running simultaneously for hrs, a fair amount of burn in tests were done, the tv cards all seem to be able to run at capture mode for hrs with no problem. 

  Step 2: was to see if vic was kind of not so nvidia friendly, the video capture server has a dual head 128mb PCI-E, which I've heard people find not so great to work with under linux. I personally did not find any such problems, running at 1600x1200 just fine, perfect response time and etc. But just for kicks I brought out a dual xeon dell box I had lying around, with more than ample horse power with a pretty simple video card, probably an intel i810 type of a card. Unfortunatley I faced the same problem.

  Step 3: Fedora 4 versus Fedora 3. So I decided to try Fedora 3 with some spare hard disks. Fedora 3 seems surprisingly easy to setup AG with, unlike the mountain I had to climb for Fedora 4. However, it seems to also mysteriously freeze one of the vic screens, after which every session would produce a greed screen on the frozen vic. Only a reboot will fix the green screen problem. But then after 5 mins of starting AG, I'm back to the frozen screen problem.

  Step 4: AG2.3 versus AG2.4, I was very excited when I saw that the screen did not freeze up after five minutes. But alas after about 15 mins or so I get a frozen window, and will show up as a green screen everytime after that. Only a reboot will fix that problem, and would eventually freeze up again.

  Step 5::Move 1 capture card to another machine, as it seems to be able to handle 2 just fine. But it appears that even in this case VIC would cause a frozen screen on one of the windows. And the usual green screen appears. The one with just 1 works perfectly. 

  So I'm kind of running out of ideas, since the capture cards on their own pass the burn in test. Software capture tests all pass. The VIC however mysteriously causes a frozen screen followed by a green screen in next vic startup. 

  Any suggestions would be most welcome. Kind of running out of hair to pull aswell. Thanks in advance.


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