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Aspect Ratio nightmare!
October 20, 2017
9:35 pm

Arcade Punk
Forum Posts: 1
Member Since:
October 20, 2017
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Hi guys,

I am running a Pi3 with the 7" Display, and I also am using raspi2raspi to utilize the HDMI port

I installed Damaso 32GB Ultimate Image, and everything looks great.

However, when I load ROMs, the aspect ratio is wrong. The ROMs load much larger than the display, while the overlays and menus all look OK. When I press select+X, the aspect ratio is set to CUSTOM. If I change to CORE, CONFIG, or 4:3 the ROMs look fine and are playable. However, when I quit a game and relaunch, the settings are lost. I have tinkered with all the different configuration settings in that menu. I have also adjusted boot config.txt and retroarch.cfg files for ALL systems as well as individual systems, with no luck! This has been very frustrating as I feel like I have searched the entire internet and tried every setting with no luck. Is there any way to fix this permanently?


April 11, 2018
5:52 pm
Forum Posts: 24
Member Since:
March 28, 2018
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When you're in RetroArch (Select & Y when in rom) go to Settings, Video, Aspect Ratio, use the D-Pad to scroll left or right to find the ratio that best fits your screen (pretty sure you've done all of this, but for other fellow future noobs). Once the ratio has been selected go back to the first menu page in RetroArch, select Quick Menu, then scroll up/down to Save Core Override. This should save the setting, in this instance ratio, for all roms within that system (emulator). This should fix the issue, you know, pending this is still a problem six months later.

Note: Saving Core Override doesn't always work, I am not sure why, as of yet.

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March 31, 2020
3:40 pm

Forum Posts: 10
Member Since:
February 12, 2020
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on the 64bit img of Childhood Memories by Damaso, I've done the following:


Enter the following directory (NEOGEO as an example):

/opt/retropie/configs/all/retroarch/config/FB Alpha 2012

The following command will list all files with string "aspect_ratio_index" and provide its value. Should be 22 or 23.
$ grep -rnwI . -e aspect_ratio_index

Depending on the result, you want to run the following command. For me it was 23. This command will change 23 into 0 (zero):
sed -i 's/aspect_ratio_index = "23"/aspect_ratio_index = "0"/g' *.cfg

Next run of a neogeo rom will be in full screen.

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