Software Support > GroovyMAME
GroovyArcade live-CD 2022 (collaborative effort)
Substring:
--- Quote from: pigzaj2 on January 09, 2024, 01:35:52 pm ---Looking for some assistance here. I am in process of trying to test the groovy arcade iso usb with my HD6450. I have my lcd monitor plugged into dvi and my vga connected into a vgactv2 which is plugged into the YPP component in on sony crt. I have tried the various settings on the live cd installer and none of them will output 15khz to the transcoder. The transcoder has led on it to show it's receiving a 15khz signal or 31khz signal or no signal and when turning on the VGA output, the transcoder will not receive a 15khz signal (shows no signal). is there a cfg setting or something i am missing? I also messed with an old amd card and flashing the bios to output 15khz which worked initially.. but when the live usb runs, it is never able to output 15khz to the transcoder.
later edit: After some more troubleshooting. The roms will load and display in 15khz, but nothing else will. Attract mode and the gasetup tool are in a higher res.
Thanks,
John
--- End quote ---
why plug the LCD ? which boot option are you choosing when booting on the USB stick ? You'll get a 15k OS if you select a 15k item
pigzaj2:
--- Quote from: Calamity on January 10, 2024, 03:28:42 am ---You have to force a 15 kHz EDID binary in the kernel boot line, force that output (vga) as enabled, and maybe also disable the output to your LCD monitor.
In syslinux.cfg:
monitor=generic_15 video=VGA-1:e drm.edid_firmware=VGA-1:edid/generic_15.bin
--- End quote ---
I added the following record to the USB \boot\syslinux\syslinux.cfg
--- Code: ---LABEL [PIGZA Test]
MENU LABEL [PIGZA Test]
LINUX /groovyarcade/boot/x86_64/vmlinuz-linux-15khz quiet rd.udev.log-priority=3 splash mitigations=off audit=0 consoleblank=0 drm.edid_firmware=VGA-1:edid/generic_15.bin monitor=generic_15 video=VGA-1:e
INITRD /groovyarcade/boot/intel-ucode.img,/groovyarcade/boot/amd-ucode.img,/groovyarcade/boot/x86_64/initramfs-linux-15khz.img
APPEND archisobasedir=groovyarcade archisolabel=GA_2023_11
--- End code ---
I ran two tests:
A. Only VGA connected - initial menu was in high res but after selecting my value above, was not able to see contents on TV but audible test said found switchres on VGA-1. i could not see the validate settings and menu but pressing enter until i hear the attract mode front end. From there, the only way to get anything to display on my TV was to select a game.
B. VGA and DVI connected - was able to see all content on DVI and audible test said found on vga and dvi with vga selected as default. I then installed to a hard drive and after install, the system loads attract mode in high res and will switch to 15khz when a game is selected.
When you mentioned disable LCD monitor, i assumed you meant to just unplug it from the video card.
pigzaj2:
--- Quote from: Substring on January 10, 2024, 03:00:16 pm ---why plug the LCD ? which boot option are you choosing when booting on the USB stick ? You'll get a 15k OS if you select a 15k item
--- End quote ---
If I leave the LCD unplugged, the usb will boot and i have a high res picker screen which is defaulted to 15khz (which I then select). The transcoder will report no signal and it will do the audible tests. i have no signal the whole time and then i know if i hit enter a few times, it will eventually end up at the live cd attract mode and i can hear the audio from it. if i pick a game, the transcoder switches from a no signal to a 15hkz signal and the rom works as expected. closing the rom will bring me back to a no signal situation and it's back at attract mode. one thing i noticed is that when i hit the power button, it did switch to 15khz to show the shutdown image/progress.
The website has been down for a while now but here is a link to the transcoder i'm using (have to use waybackmachine to even find it):
https://web.archive.org/web/20210126095319/https://www.retrotekshop.com/products?pn=VGACTV2
I tried same approach on another motherboard just to verify that maybe it was something with my Asus M3A78 motherboard that might cause it to fail but no luck there either.
Substring:
use the LCD for the boot menu, hightlight the option you want (here it should be EDID interlaced), unplug it, press enter, let it do the magic
pigzaj2:
Im starting to think maybe the transcoder is the issue. Selecting edid interlaced and unplugging LCD and hitting enter will go through this sequence:
- blank TV screen and then audio test begins.
- it says turning on VGA1. (nothing ever appears and transcoder says no signal). Then it says found switch on vga with edid.
- nothing is displayed on screen but I know it's sitting at the validate video screen so i hit enter a couple of times and it boots to attract mode.
- still no screen until I hit enter on the rom and it displays the rom.
- exit the game back to blank screen.
I have similar results with both of my ATI cards so maybe I just find another vga->ypp converter and retest.
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