I successfully set up GM on one PC, but fail to do so on another PC.
[CRT]
tri-sync monitor on Sega New Net City
[PC1 - succeed]
Intel i5
AMD R9 290
[PC2 - fail]
AMD Ryzen
AMD RX 470
For the case of RX 470, I found a very strange situation. Sometimes I am able to switch to 2560x224 in ArcadeOSD, but sometimes it shows no signal.
Does anyone use RX 470 and able to make it works?
The attachments are two logs generated with -v sf2 on two PCs respectively.