@mitu said in Using external DVD drive to play original game (not ripped):

Dreamcast uses GD-ROM as disc format and I don't think it's supported right now by RetroArch

I confirm it's not supported, in the first place no normal CD-ROM drive can read them.

@pheedback I had the same issue when I got my RPI4 a few weeks ago.

I have a fairly old 1080p Sony Bravia, first boot nothing so then all the usual cable swapping etc and managed to get video but no sound out of the other hdmi port. (Sound only from hdmi port 0 by default but can be changed).

After reading some posts on the official rpi forum, I tried a newer 1080p tv which ran perfectly. I have since read it could be the 4K output is not compatible with old 1080p tv’s, maybe an old hdmi version on the old tv?

I’ve gone back to the Sony TV and it works perfectly now, maybe the rpi has defaulted to a 1080p signal that it detected from the newer tv.

It's hard to say if you have the proper power supply. Maybe check your power cable. I use an extra long one and keep that in mind when I am troubleshooting. Maybe your Pi or new power supply is malfunctioning. Do you have a second Pi to test your current card?

Since it's global it sounds like you might need to do some additional troubleshooting. I would almost reinstall with a fresh image on the SD card (or a different one) to rule out the SD card, image & configuration. Maybe a different USB drive if that's what you're using.

It seems there's a lot that could happening to make a determination or if it was a larger/build related issue more would be posting.

Hi all, sorry for dragging up an old thread. Has anyone got this to work on the latest Retropie image (4.7.1)? I had it installed on an old 4.4 image working absolutely fine, thought I would update to latest image 4.7.1 followed all the same steps (actually copied what was written in the old image that worked) in relation to detecting hdmi. But I can’t get it to work in 4.7.1, it always defaults into hdmi and cannot get itself back into lcd when you don’t have an hdmi cable installed. I often see ‘Unk-Comp-Dev’ in the text when booting rather than ‘[E] No Device Present]. Wondering if the updated Retropie version somehow recognizes the LCD screen differently which is preventing this script from working? It seems to always boot into hdmi like it always thinks something is plugged in when it’s not.

Any help to get it working would be much appreciated!

Thanks!

Ok found a solution in another thread no longer need a script to do what I need just a simple addition to the config.txt file, all sorted! Thanks!