I’m having some trouble with one of my Rock Pi 4’s, it’s not booting Android and doesn’t have a HDMI signal… but I do get both the LED’s and a solid blue.
I initially thought it may have been an adapter issue, but I used an Anker QC 3.0 power adapter… and it doesn’t work. I have another Rock Pi 4, which can run Android just fine using the same power adapter.
I think I may have messed something up when I was trying to get a build of CentOS running on it… so I’m not sure how to fix it, or if this was the actual cause. But when I try Ubuntu Server or the Debian stretch image… it works fine. I’m using eMMC modules. If anyone can help shed some light, I’d appreciate it greatly. Thanks!