The Pi uses the EDID of the display to determine the modes that can be supported.
SSH in to the Pi and run "kmsprint -m" and it should tell you the modes that the display reports and the Pi can support.
Check the kernel logs for errors from parsing the EDID (view the log with "dmesg").
You can also get the decoded output using "edid-decode /sys/class/drm/card1-HDMI-A-1/edid". Post that here and it can be analysed.
Alternatively useand post the resulting link so that we get the full system diagnostics.
These random displays are notorious for having dodgy things in the EDID, including invalid checksums.
And based on the hdmi_timings line given to you, it is actually a portrait 515x1920 display, not landscape 1920x515.
SSH in to the Pi and run "kmsprint -m" and it should tell you the modes that the display reports and the Pi can support.
Check the kernel logs for errors from parsing the EDID (view the log with "dmesg").
You can also get the decoded output using "edid-decode /sys/class/drm/card1-HDMI-A-1/edid". Post that here and it can be analysed.
Alternatively use
Code:
raspinfo | pastebinitThese random displays are notorious for having dodgy things in the EDID, including invalid checksums.
And based on the hdmi_timings line given to you, it is actually a portrait 515x1920 display, not landscape 1920x515.
Statistics: Posted by 6by9 — Thu Mar 13, 2025 12:03 pm