[mythtv-users] New nVidia 169.07 and interlace changes?

[Tom Dexter]

On Dec 23, 2007 9:20 AM, Mark Buechler <mark.buechler at gmail.com> wrote:
> As far as tearing goes, I don't know that it's any fault of NVidia drivers.
> You probably need to enable sync to vblank in the nvidia settings. This is a
> necessary option when you're updating the video buffer at the same time as
> displaying it. If you don't update the buffer during the vblank interval,
> you'll see parts of both the previous frame (the top portion of the screen)
> and the next frame (the bottom portion) which results in a tearing effect.
>
> - Mark.
>

I have that enabled.  I'm assuming you don't have a 1080i interlaced
display.  If you did you'd know that the tearing issues are very much
a problem with the nVidia driver and have been since one of there 8xxx
drivers years ago.  Just search the archives for this list or the
nVidia linux forum.  Without deinterlacing the video, it'll look great
for maybe 15 seconds and then drift out of since.  Short of enabling
deinterlacing or managing to use one of their really old drivers (if
you can) there's no fix.

Some suspect it may be related to the fact that the nVidia driver
reports the RefreshRate as 60.05 when xorg reports it as 59.9.

Tom