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Advanced users • Re: Display Priority on Raspberry Pi 5 Pi OS

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Pi5 is a little awkward as DSI and DPI are on a separate DRM device from the HDMIs, whereas previously everything has been on the one device.

If you're referencing the fact that a separate framebuffer is created per DRM device, then you can use the overrides to force DRM to use specific /dev/fbN nodes for devices. "dtparam=drm_fb0_rp1_dsi0" for example should mean that DSI0 always claims /dev/fb0 and therefore has the console on it. Be aware that if that device doesn't exist then you'll get no console visible on any display as none of them will be /dev/fb0. You may be able to fiddle it with conditional filters such as

Code:

dtparam=drm_fb0_rp1_dsi0[EDID=CRM-27QHD240]dtparam=drm_fb0_vc4[all]
ie default to DSI0 being fb0, but if the EDID of your monitor is detected then change it to vc4 (the HDMI outputs).

Statistics: Posted by 6by9 — Mon Jul 08, 2024 11:05 am



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