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Weird resolutions generated
#1
Hi,

I was just setting up an ubuntu retroarch machine for a crt monitor. I tried with retroarch mainline first, but the modelines generated by crt switchres were off-center.

I tried mme4linux and the issue, while slightly different, still persists.

For example, the modeline generated for genesis (genesis-plus-gx) is as follows (xrandr output):

Code:
CRT7_320x224_59.92 (0x4db)  6.131MHz -HSync -VSync
  h: width   320 start  330 end  357 total  392 skew    0 clock  15.64KHz
  v: height  224 start  234 end  237 total  261

The modeline I was using previously using under windows for crtemudriver is this:

Modeline "320x224 NTSC (60Hz)" 6.700 320 336 367 426 224 236 239 262 -hsync -vsync

xrandr:

Code:
MANUAL_320x224 (0x4dc)  6.700MHz -HSync -VSync *current
  h: width   320 start  336 end  367 total  426 skew    0 clock  15.73KHz
  v: height  224 start  236 end  239 total  262           clock  60.03Hz

I got this modeline from http://www.geocities.ws/podernixie/htpc/modes-en.html. These are usually very good, and produce a centered image on a monitor that was calibrated using consoles outputting 240p.

The visual issue is that the image is slightly wider than it should be, and the left is extremely cut off. I took a couple of pictures:

MME4crt modeline

manual modeline

Checking with the underscan option of my bvm, I can see that the image starts right at the left edge of the screen, rather than being centered.

I tested with a couple of fba games, nestopia, and snes9x, and they all present the same issue. I tried playing with the X Centering option without much success (setting it to 4 kinda freaked out the bvm).

I am using ubuntu server with nodm + openbox, compiled mme4crt by hand, gl driver.

Let me know if I can provide any more information.
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Messages In This Thread
Weird resolutions generated - by kamicane - 03-12-2019, 02:18 PM
RE: Weird resolutions generated - by alphanu - 03-12-2019, 02:41 PM
RE: Weird resolutions generated - by kamicane - 03-12-2019, 04:01 PM
RE: Weird resolutions generated - by kamicane - 03-13-2019, 05:41 AM
RE: Weird resolutions generated - by retrorepair - 03-13-2019, 01:40 PM
RE: Weird resolutions generated - by kamicane - 03-13-2019, 05:39 PM
RE: Weird resolutions generated - by retrorepair - 03-15-2019, 09:10 PM

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