Hi,
I have setup an arcade cabinet built on a slim form Lenovo thinkcentre intel core2 Duo desktop with PCIE Radion 7000 series graphic card connected via DVI-I to an NTSC TV RGB modded and with ATOM-15 BIOS patch. It is a pretty standard hardware configuration I believe. I made it work on Windows 10 with CRTEmudriver groovymame using either standard resolutions (my preference) and superresolutions. I do not have any dual monitor configuration. Everything boot and run from the NTSC TV fine
Being a Linux guy, I now want to install groovyarcade. I am running from the 2020.06 version, booting from a USB key.
My problem is that the video I get is scrambled (sync problem):
On Power ON, I reach the groovy arcade boot menu where I can choose either 15kHZ or NTSC. So I am fine up to that point.
After that, if I select either 15kHz or NTSC, the splash screen picture that follows is scrambled.
I tried to change the resolution. I used the Tab option on the boot menu and edit the video mode from 640x480iS to 320x240eS. The resolution will change to 320x240 but still I got a scrambled picture
I tested the 15kHz signal. I disconnected my NTSV TV and connected VGA monitor. The picture is out of sync, so I believe the signal is 15kHz.
So the resolution is correct, 15kHz signal is correct, but the image is scrambled.
Is it an issue with this particular Radeon graphic cards series? Can I edit the modelines somehow to adjust? Did I miss a step?
Thx for your help and the great work around Groovyarcade.