HDMI works with Kernel 4.16 in some cases (1080p,1280×1024). Driver with fbdev was backported to 4.14 and ported to 4.19.in 5.0 hdmi works but fbdev does not.
Discussion in Forum.
Resolution can be set in BPI-BOOT/bananapi/bpi-r2/linux/uEnv.txt:
bootopts=vmalloc=496M debug=7 initcall_debug=0 video=1280x1024-32
this resolution will be used for both virtual Console and X-Server.
more about this setting: https://nouveau.freedesktop.org/wiki/KernelModeSetting/
to resize only font on Console this can be done:
available fonts are in /usr/share/consolefonts/
Thanks to ForumUser Alex R. aka “DeadMeat”
Normally hdmi will be turned off if no monitor is connected (or switched off) while bootup. You can change this with a video-option:
This keeps hdmi enabled and allow hotplug,but in my case there is a resolution-issue.
add “drm.debug=0x04” to bootopts in uEnv.txt (maybe 0x07 optionally with log_buf_len=1M)