Hello!
Good news:
geexbox-devel-20161106-r538361b-x86_64.iso with xf86-video-nvidia-legacy_340.98-1_x86_64.opk booting properly without black screen.
Bad news:
Hardware acceleration (VDPAU) in this configuration not working, therefore the CPU usage is very high.
In old version in SYSTEM-SETTINGS-VIDEOS-PLAYBACK menu was item “use hardware acceleration (VDPAU)”, in the current version I have not found it.