[mythtv-users] Video Artifacts - Horizontal Bands, Green Flashes, Pincushion effect

[Henk Poley]

Van: Jason Giddens <jgiddens at nyc.rr.com>

> - At all times, whether in Mythfrontend, Live TV, DVD, or even just my
> desktop there are horizontal bands that move up the screen.  They are
> transparent, but slightly different in shade.  It's as if you divided
> the screen horizontally into 16 sections, and made every other section
> slightly darker than the preceding one, then made the sections scroll
> endlessly up the screen.  To my untrained eye, this appears to be some
> sort of RF interference, but changing the cable and the cables position
> in my rat's nest of wiring made no difference.

Hmm, add a Option ANTIFLICKER "adaptive" (or "high) to your XF86Config?
It should work with Winischhofer's driver at
http://www.winischhofer.net/linuxsisvga.shtml


> - Also at all times, the left side of the screen is curved inwards
> toward the center of the screen.  On a PC monitor this is called
> "Pincushion" and can be changed on the monitors OSD.  My 35" Toshiba has
> no such adjustment.

Hmm, what driver are you useing? I did have that with my plain text console
(non X) without the framebuffer driver I got from Winischhofer (it was
grayscale back then also, on my PAL TV).

> - While watching live TV, there are periodic artifacts.  Specifically
> there are green flashes that appear every few seconds randomly around
> the screen.  They appear as a green sparkle, maybe 2-6 pixels high and
> 10 pixels wide.

Could be anything, bad tv-card, bad driver options, bad tuneing, bad video
card, bad driver, bad XFree86 version, etc...

	Henk Poley <><