|Originally posted by sengsational
I'll admit to not reading every post in this thread because most of it was over my head (you guys initially figuring out what I probably want to know!).
My initial setup, that I haven't changed, is the XBR910 with the TV tuner (MyHD) on the component input at 1080i. More challenging is the second connection to the Windows desktop on the DVI, which I have at 1360x720p (Radeon 9000, if that matters). I also use fullscreen Cineplayer on the HTPC 'desktop' to play DVD's too. To see the whole desktop I adjusted tilt, squeezed and shifted through the service menu, but I had to leave a bit of overscan because of 'edge artifacts' on video signals. My 4:3 ended-up off center, and my aspect ratio is off when I play DVDs (using a ruler (!) I find 1.2 instead of 1.33333, for instance). Also, on a maximized window, for instance, you can see a bow along the title bar (not a straight line). Finally, occasionally, depending on the OTA signal and it seems more often if I've got the tv zoomed, I'll see a very faint brightness change that passes from the right to my left. It's like a vertical bar of slightly brighter material is passing-by, about once per second. This is the least of my concerns, because it happens rarely, and you really have to be paying attention to see it.
My specific question is, would you recommend 540p and flipping HDPT for the Windows desktop on the DVI? Or does that only change the component input? Maybe I should flip it anyway so my 1080i doesn't get reconverted? Any general recommendations for an XBR910 as an HTPC monitor? What general recommendations would you have for next steps for me? I thought about buying that DVD to provide inputs to allow TV adjustments, but the one I looked at got trashed by reviewers.
Looking back at this thread, the advice particularly regarding overscan adjustments does seem to be all over the map. My philosophy re how to approach this has changed though. So let me start there.
At some point I went and reset all my geometry settings back to their defaults. Since then, here is the strategy I have used for sizing and positioning. (Much of this will probably be old news to skilled Powerstrip users.)
A) I use only a single input and signal which can dramatically simplify calibration, although this may not be practical for most people.
B) I leave HCNT, HSIZ, VSIZ, VPOS basically at their defaults (or as other more generic geometry calibration tools dictate).
C) Although it's possible to adjust the horizontal size of the raster with the controls in PS, this does not seem to work for horizontal position
. So I use HPOS for this. Unfortunately, adjusting this for a computer input can potentially throw off the position of other video inputs. More below.
D) I use the horizontal sizing
controls (with Frequencies Locked) in Powerstrip's Advanced Timing Options to scale the raster/porches to fit the screen with the amount of horizontal
overscan I desire. With this approach I can use just about any acceptable horizontal resolution I want and get a decent fit, without having to change anything on the TV.
E) I use the vertical positioning
control in PS's Advanced Timing Options (with Frequencies Locked) to adjust the vertical
porches of the raster for a good position. Another option is to use 2170D_1/SCRL on the TV.
F) One of the simpler ways to adjust the vertical size for no overscan, is to use something like a 480p rez @ 540p timing, or a 640p rez @ 720p (I believe there are HDTV Derived modes something like these included with PS) or a custom resolution could be created at a 540p, 720p, or 1080i timing to achieve a more perfect fit. Another option is to use 2170D_1/ASPT on the TV.
If you need your TV to work well for both an HTPC and other video sources, then the fewer items you tweak on the TV, the simpler it will be. Horizontal positioning is the area where there's the biggest problem with this. Since I'm only using one signal, namely the bypassed 1080i
HPOS works fine. However, if you're not in the same boat then another strategy may be needed, perhaps involving the MID controls. Wish I could offer better advice on this.