[mythtv-users] Getting no video in xawtv with correctly installed BTTV....any ideas? * lots of info provided*

Mike Miller miller44 at optonline.net
Mon Jun 30 00:35:01 EDT 2003


Heres what I got
debian:~# more /proc/interrupts
           CPU0       
  0:     724109          XT-PIC  timer
  1:       2779          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  5:        627          XT-PIC  eth0
  8:          3          XT-PIC  rtc
 11:       2037          XT-PIC  bttv
 12:      37569          XT-PIC  PS/2 Mouse
 14:       8735          XT-PIC  ide0
 15:          0          XT-PIC  ide1
NMI:          0 
LOC:     724088 
ERR:         65
MIS:          0

Doesn't appear to be any conflict...

-----Original Message-----
From: mythtv-users-bounces at snowman.net
[mailto:mythtv-users-bounces at snowman.net] On Behalf Of Ray Olszewski
Sent: Sunday, June 29, 2003 11:05 PM
To: 'Discussion about mythtv'
Subject: Re: [mythtv-users] Getting no video in xawtv with correctly
installed BTTV....any ideas? * lots of info provided*

This report looks to me more like a hardware problem than an xawtv
problem. 
It just happens to turn up with xawtv because that's the video app you
are 
using in your tests.

The important part is here (I think):

         bttv0: irq: SCERR risc_count=1f512008

This says that the bttv driver is reporting an error that comes from the

irq handler. SCERR just means System Call ERRor, not deeply informative.

But I did find one report on the v4l list that associated this behavior 
with IRQ sharing (in particular, sharing with another very active
device, 
the sound card). So look into that possibility. IRQ sharing itself is
legal 
in Linux, but it can still be a bad idea if two very active devices try
to 
use the same interrupt.

1. "more /proc/interrupts" will show you what devices have actively been

using IRQs. Run it after a failed attempt to use xawtv. See what else is
on 
IRQ 11.

2. If it looks like there is a conflict, the solution depends on your 
hardware and BIOS. You may need to move cards from slot to slot to
change 
the IRQ arrangement, or your BIOS might let you do it. Try to get the
bttv 
card on an irq not used by anything else.

At 09:39 PM 6/29/2003 -0400, Mike Miller wrote:
>I know I said I was quitting but I couldn't quite give up yet.  Ive
done
>some more poking around,
[...]




_______________________________________________
mythtv-users mailing list
mythtv-users at snowman.net
http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users




More information about the mythtv-users mailing list