On Tue, 2008-10-14 at 07:01 +0200, Duncan Webb wrote:
> On 13/10/2008 22:57, Pascal Schirrmann said the following:
> > Pascal Schirrmann a écrit :
> >> Pascal Schirrmann a écrit :
> >>   
> >>> I'm in France, so most program are in SECAM, I don't know if this has 
> >>> something to do with my trouble.
> >>>   
> >>>     
> >> OK, I got it (and in some ways, it returns to freevo, sorry :-|).
> >>
> >> Since long time, PVR card did work in a kind of generic PAL or generic 
> >> SECAM mode. For secam, this was a value of ff0000, witch this result :
> >>
> >> $ v4l2-ctl -S
> >> Video Standard = 0x00ff0000
> >>         SECAM-B/D/G/H/K/K1/L/Lc
> >>
> >> This doesn't work anymore (at least on my system !)
> >> But if I select the 'French secam' (that is, secam-L) :
> >> $ v4l2-ctl -s secam-L
> >> Standard set to 00400000
> >> $ v4l2-ctl -S
> >> Video Standard = 0x00400000
> >>         SECAM-L
> >>
> >>
> >> Then the sound is back here (to be able to do that, I change the 
> >> standard in ferrvo.conf to a wrong value. So freevo complains, but the 
> >> TV has sound !)
> >>
> >>   
> > OK, I tried my chance on the ivtv-users list, and here is the answer of 
> > Hans Verkuil :
> > 
> > ------------------------------------------------------------------------------------------------
> > 
> > Hi Pascal,
> > 
> > It's not a bug, it's the right behavior. I'm even a bit surprised that 
> > this has worked in the past. Setting generic secam is a bad thing to do 
> > as there is really no such thing. In practice you have SECAM-BG, 
> > SECAM-DK and SECAM-L. And it is basically undefined what will happen if 
> > you just set SECAM.
> 
> More than likely the driver used a specific standard, such as SECAM-BG 
> when SECAM was selected.
> 
> Has anyone noticed that the ivtv driver now loads the firmware, not on 
> the module loading but when it is first accessed? If this is the new 
> behaviour then it is a nice feature, as the drivers can be modprobed in 
> a standard order.
> 
> Duncan

Yeah I noticed this and it fails to load the firmware so now and then on
my pvr150 with ivtv 2.3.0, As an result I am ending up with a lot of
static recordings. Still investigating why this behaviour is
intermittent though before reporting it through the proper channels.
Could be a race condition when passing on the v4l2 commands with freevo.
Not sure yet. 

fyi. 

ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
ivtv0: Encoder revision: 0x02060039
i2c-adapter i2c-1: sendbytes: NAK bailout.
cx25840 1-0044: firmware load i2c failure
i2c-adapter i2c-1: sendbytes: NAK bailout.
tuner 1-0061: tuner type not set
tuner 1-0061: tuner type not set
tuner 1-0061: tuner type not set

 /Robert Winder 



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