Raspberry Pi 3B at 4K UHD in Portrait Mode
I bought a 4K UHD screen as a display for my Magic Mirror project. I was able to make my Raspi 3B output a HDMI signal at 3840 x 2160 (15Hz), but it only works in Landscape Mode. When I switch to portrait mode (by adding
/boot/config.txt) the Raspberry Pi would not boot up anymore (display rotation however worked at 1920x1080).
I have seen other people struggle as well, but some have succeeded by making changes to the X Framebuffer. Unfortunately, that has not worked for me.
So: can anyone share a working configuration for 4K Portrait Mode with a Raspi 3B on Raspbian 9 Stretch?
Thanks for your help!
P.S. So far, my
/boot/config.txtcontains the following video-related commands that I had put together from various sources:
disable_overscan=1 framebuffer_width=3840 framebuffer_height=2160 max_framebuffer_width=3840 max_framebuffer_height=2160 hdmi_group=2 hdmi_mode=87 hdmi_ignore_edid=0xa5000080 hdmi_cvt=3840 2160 15 gpu_mem=256
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