Honestly, I've already forgotten what the problem was there. Most likely, I used the Armbian installer and specified where to install the distribution in the automatic image download mode. Before that, I had tried writing it manually. Besides that, I found an important nuance — if you install software through armbian-config, for example GNOME and Chromium, the Plymouth splash screen will be automatically configured at boot, and hardware video decoding will be enabled in the browser, which for some reason does not get enabled when installing manually.