@kessler94 Press Start+X to open the RetroArch menu, navigate to Settings -> Video -> Aspect Ratio, and change it to something you like. When you're done, remember to go to Configurations and save your changes.

@wheeliebar overscan_scale=1

Here are some handy links found

https://www.raspberrypi.org/forums/viewtopic.php?t=25933 https://raspberrypi.stackexchange.com/questions/46153/detect-hdmi-and-start-gui/46158#46158 (the guide from the Raspberry Pi site) https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

You can start playing with the command and see if you can switch manually between resolutions, on the fly. If this works, then you can incorporate it in a script to be run at boot.

Better late then never I suppose

https://github.com/libretro/RetroArch/pull/14628

Most systems that display in 256x224 are stretched by the TV.

The NES' pixels are actually 1.2x wider than tall, probably the same for other systems as well.

wonderful, i'll look into it, thanks!

@darkus I have the RPI system 24/7, but I don't have this problem. The TV turns off the screen after about 1h (2h maybe). I have the screensaver/power options active in EmulationStation, if that makes a difference.
One thing to try is to move the HDMI PI cable to a different TV port - if you have more than 1. Mine is set HDMI2, which is labeled PC, and has the Game mode active.

@lurker It can be done. A lot of people jump to the direct GPU which cannot be done, however the Displayotron Hat LCD panels you can get for the Pi which run over the GPIO interface use a frambuffer which runs independently from the GPU, so terrible framerates overall but for displaying 2D graphics.static images it is perfectly acceptable. All you need is a display of similar construction with an SPI interface to send the image to.

@obsidianspider You need a Sega Master System. It may not have been huge in the US but it was a big deal in Europe, Asia and South America. Sega's first big push into home gaming outside of Japan. Plus I like the aesthetics of it.
You also need an Atari 2600. Because Atari. And electronics with wood panelling are cool as .

@retro_pi if you read my post it’s in there. If you have specific questions I will be happy to answer them.

@batman I was looking into some LCDs too and I added most of those to my wish list while I was laying in bed the other night lol. But I discovered those 2k monitors and the capacitive touch monitors when I was making this post. Really good looking LCDs!

Ok guys, I have just redone the SD card and it's working perfect - as far as I can see the config file is identical to what I had it as. I have no idea what happened there but to be honest, its now working and the kids are happy so all is well.

Thank you all for your help and suggestions.

Hi,
I'm running into the same problem where my robopeak usb tft has red and blue swapped when I use fbcp.
Did you find a solution?

@foxcek please read my last post. Can you take a picture of the tv screen when you hit the info button or change the channel to the video mode you are using? I want to see what mode its on. Plus a pic of the back of your tv's video hookups with and without the cables plugged in.

@ethan8r Do you really want to play Retropie games on a tablet through the USB port? Think how bad the lag would be. In order for you to use the tablet as monitor consider these:

Most USB ports on tablets are for charging the battery. They do not take in information from other source other than through WIFI. Those that do, the video information from RPI has to be translated to USB data either through hardware/software hackery wizardry. Then you will need an application on the tablet to properly re-translate the information back to video. These translations would no doubt introduce delays and lags in game playing time.

Yep i tried but there is registration probleme on their forum. I'm blocked

Also something to consider is the shader you're using, as well as the resolution the Pi is running at. I currently cap my Pi to either 1280x720 or 640x480 depending on the emulator. Running the Pi on a CRT would kind of automatically limit the resolution, so that probably plays a big part in the performance improvements you've noticed.

However, It cannot be denied that overall, a CRT will perform better, even with these considerations, as your LCD TV has to process the video signal, whereas the CRT just takes it and displays it if it can.

Most adapters out there converts USB signals to HDMI (or other video format) signals to output video to monitor/TV. I have not known an adapter that converts HDMI signals to USB. If that can be done, you will also need a software in the tablet to interpret the USB signals back to video for the tablet to display. Also, said HDMI-to-USB adapter cannot be DRM compliant as it will be a means to pirate copyrighted video contents.