Refresh or Sync problem with some games

[MikeH482]

I’ve been running into a few games that seem like they have refresh or sync issues. Most recent one I found was Capcom Bowling (capbowl). This issue seems to occur in both AdvMame106 and Mame172. I tried changing refresh in the mameinfo.txt file but it didn't solve it (or I didn’t guess the right refresh value). I’m using ArPiCade version 3.x in a vertical monitor setup, CGA monitor (EZ20). I attached a photo of what the monitor displays. Any help getting this to work properly is appreciated. Thanks!

[dee2eR]

I'll check it out and get back to you.

Is it on 3.X or 4.3?

[MikeH482]

3.x, RasPi 3B

[MikeH482]

Any idea what setting(s) I might need to adjust? Refresh rate?

[dee2eR]

It seems to be fine on my test bench, tested on MAME 0.172, ARpiCADE 3.X.1, vertical in both default low res & 240p only settings.

You may be able to adjust the sync pot(s) on your monitor chassis to sort it out, failing that I can help you adjust the res switch script so it uses something close to 57hz but not actually 57hz for 57hz games as a workaround.

Bit of a weird resolution being used by Capcom Bowling, MAME 172 reports it as 245p @ 57hz.

If you're fine with editing /boot/launchers/resSwitch.sh your self (back it up first just in case, and if you're on Windows use Notepad++) you can find these lines:

elif [ $(lessThan $r 56.90) == n ] && [ $(lessThan $r 57.20) == y ]; then
#37013862 269 2414 240 @ 57
## 1920 x 240 @ 57hz ## Joyfull Road + others exact
vcgencmd hdmi_timings 1920 1 72 202 220 240 1 6 7 16 0 0 0 57 0 37013862 1

elif [ $(lessThan $r 57.20) == n ] && [ $(lessThan $r 57.45) == y ]; then

and change them to:

# elif [ $(lessThan $r 56.90) == n ] && [ $(lessThan $r 57.20) == y ]; then
#37013862 269 2414 240 @ 57
## 1920 x 240 @ 57hz ## Joyfull Road + others exact
# vcgencmd hdmi_timings 1920 1 72 202 220 240 1 6 7 16 0 0 0 57 0 37013862 1

elif [ $(lessThan $r 56.90) == n ] && [ $(lessThan $r 57.45) == y ]; then

With these changes games using 57hz will run at 57.444855hz instead of 57hz and hopefully your issue will be fixed.

EDIT: fixed typo

[MikeH482]

I tried all the above and the only thing that works is adjusting the monitor's horizontal and vertical hold pots. But then that messes up the display on all the other games that were displaying fine previously, and even the AttractMode frontend is out of sync. Not sure what else to try or maybe just have to give up on games like Capcom Bowling.