[mythtv-users] VIDIOCMCAPTURE0: Device or resource busy
Chris Picton
chrisp at tangent.co.za
Sat Aug 23 19:54:23 UTC 2008
Final follow-up
Problem solved.
First, this does appear to be a kernel issue with bttv and v4l1:
http://kerneltrap.org/mailarchive/linux-kernel/2008/8/4/2806884
Using kernel version 2.6.24 works fine.
In addition, patching mythtv to use v4l2 for bttv cards allows it to
work with kernels >= 2.6.25. This also reduced my CPU time while
recording from 40% to 25% (Sempron 2400+)
932c932
< if (driver == "cx8800" || driver == "go7007" || driver ==
"em28xx")
---
> if (driver == "cx8800" || driver == "go7007" || driver ==
"em28xx" || driver == "bttv")
I have not yet experienced any channel changing errors as documented
here:
http://www.mythtv.org/pipermail/mythtv-dev/2005-February/031229.html
On Sat, 2008-08-23 at 20:18 +0200, Chris Picton wrote:
> On Sat, 2008-08-23 at 09:30 +0200, Chris Picton wrote:
> > On Sat, 2008-08-23 at 00:20 +0200, Xaero wrote:
> > > same problem
> > > see
> > > http://mythtv.org/pipermail/mythtv-users/2008-August/231432.html
> > >
> > > which card are you using?
> >
> > I have a Leadtek TV2000XP RM
> >
> > I will try with an older kernel (currently I am using 2.6.26, but my
> > previous installation was 2.6.22)
> Results of the above test:
>
> I tried mythtv 0.20.2, but same issue
>
> I then tried kernel 2.6.19.7, and LiveTV works fine.
>
> So I assume this is a kernel incompatibility.
>
> Xaero - what kernel version are you using?
>
>
> > >
> > > 2008/8/22 Chris Picton <chrisp at tangent.co.za>
> > > I am getting
> > > the
> > > following error when trying to watch live tv:
> > >
> > > 2008-08-22 20:52:26.096 TVRec(1): Changing from None to
> > > WatchingLiveTV
> > > 2008-08-22 20:52:26.102 TVRec(1): HW Tuner: 1->1
> > > 2008-08-22 20:52:27.251 AutoExpire: CalcParams(): Max required
> > > Free
> > > Space: 2.0 GB w/freq: 15 min
> > > VIDIOCMCAPTUREi0: Device or resource busy
> > > VIDIOCMCAPTUREi1: Device or resource busy
> > > VIDIOCMCAPTURE0: Device or resource busy
> > > VIDIOCMCAPTURE1: Device or resource busy
> > > (last two lines continually repeated)
> > >
> > > I am reading from a bttv card, using the 'Television' input.
> > >
>
> ---------------------+-----------------------------------
> Chris Picton | Key ID: 9D28A988 (wwwkeys.pgp.net)
> Technical Director | PGP Key Fingerprint:
> Tangent Systems | 2B46 29EA D530 79EC D9EA
> 011 447 8096 | 3ED0 229D 6DD6 9D28 A988
> chrisp at tangent.co.za | www.tangent.co.za/keys/chrisp.asc
> ---------------------+-----------------------------------
> _______________________________________________
> mythtv-users mailing list
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---------------------+-----------------------------------
Chris Picton | Key ID: 9D28A988 (wwwkeys.pgp.net)
Technical Director | PGP Key Fingerprint:
Tangent Systems | 2B46 29EA D530 79EC D9EA
011 447 8096 | 3ED0 229D 6DD6 9D28 A988
chrisp at tangent.co.za | www.tangent.co.za/keys/chrisp.asc
---------------------+-----------------------------------
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