@otto_oz:
Which AMD Ryzen™?
Which AMD AM4 Chipset is present on your Mainboard? – X470, X370, X300, B450, B350, A320, A300?
- I’m beginning to suspect that, the X470, B450, A320 chipsets are preferred for the 2nd generation Ryzen™ CPUs (Zen+) …
Is the UEFI/BIOS version currently on your Mainboard the correct one for the Ryzen™ CPU/APU you’re using?
Please be aware that, despite the Leap 15.0 Kernel version (4.12) being supposedly OK for Ryzen™ CPUs, usually at least Kernel version 4.15 is needed to properly support Ryzen™ CPUs and, definitely needed if you have an APU – Vega graphics …
- Therefore, you may have to move to Tumbleweed (Kernel version 4.20) …