Sporadic sync problems on PVM

[rogerxy]

Hi
I have a PVM-20M7MDE that for the most times works perfectly with MiSTer but in some certain places in certain games (most games tbh) I experience sync problems. I use RGB - Sync on Green. Not sure why these sync problems occur but I've compiled a clip of some examples. If anyone have any idea I would appreciate it very much

https://youtu.be/9LvdwkoPWCQ

Thank you

[rcade]

Maybe bad cable or bad settings in the mister.ini?
I ran those two games just now on my (14") PVM and sync is fine.

Are you using analog board or HDMI converter?

I only use analog board and have:
composite_sync=1
vga_scaler=0

I also combined the H and V sync wires on my cable to go to the Sync on the PVM, but I don't believe that matters- it works with only the one.

My PVM does not care about SOG at all. The only thing that switch does is change the color slightly.

[MikeS1]

The sync out of the analog Io board is pretty weak, I'd use the external sync on your tv. I think it can use csync out of the hsync signal.

[Wave]

I recently got a PVM-2950Q that is fussy about sync / MiSTer's known iffy analog board sync and resolved the rolling RGB/YPbPr by getting a cheap Extron RGB 160xi to normalize the sync before it reached the monitor. Worked perfectly.

Also, the monitor syncs perfectly to the MikeS (hey Mike!) Y/C cores without needing external help.