hverkuil at xs4all
Oct 14, 2008, 3:11 PM
Post #2 of 2
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Re: patch: avoid green screen on PVR350 TV-out after loading ivtv
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Hi Martin,
On Tuesday 14 October 2008 23:27:55 Martin Dauskardt wrote:
> it seems that my mails to Hans do not arrive, so I post it here now:
>
> When you load ivtv, you get a green screen on the tv-out of a PVR350.
> The green screen does not disappear until you actually use the
> decoder (/dev/video16) or load ivtvfb.
>
> When you load ivtvfb, it automatically loads ivtv. In this case,
> there is only a short green flashing as ivtvfb sets the screen blank
> (black).
>
> This behavior of the driver was introduced with
> http://linuxtv.org/hg/v4l-dvb/rev/8c953a1342bf
>
> The green screen happens because the cx23415 isn't sending any data
> to the saa7127 until the framebuffer is initialized or an MPEG is
> played back
>
> The attached patch fixes the green screen. It disables the saa7127
> video output immidiately after initializing it, and enables it as
> soon as it is used.
Hmm, for whatever reason I keep forgetting about this issue. Some
patches are just trivially right and I can quickly merge them, but this
patch needs a bit more thought and each time something else pops up
making me forget about this.
I'll really try to look at it this weekend, feel free to prod me on
Saturday. In general, if it looks I've forgotten to look at something I
probably have. I get a lot of mail and it's not uncommon for things to
slip through the cracks, so don't hesitate to mail reminders to me.
Regards,
Hans
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ivtv-driver.c-greenfix.diff
