On 20/10/2023 07:46, riveravaldez wrote:
Certainly, but it hasn't. It has only VGA and DVI-D (Dual Link) inputs, and the laptop has only DP and VGA outputs, so, VGA is the first option...
A decade ago I used a HDMI to DVI adapter plugged into the monitor (a case a bit larger than a DVI male connector having a HDMI slot). I would check if DP to DVI or DP to HDMI converters exist and have no compatibility issues (e.g. I have heard of bugs related to support of USB-C to DP chips).
Was external monitor connected and turned on when you were collecting logs? I assume that your monitor may report supported modes. May it happen that the VGA cable lacks wires related to the digital link for DDC communication and allowing to get EDID info?
I would try to get list of modes in a more direct way (adjust card-port path component)
edid-decode /sys/class/drm/card0-eDP-1/edid or parse-edid < /sys/class/drm/card0-HDMI-A-1/edid from read-edid and edid-decode packages. P.S. Do not neglect screws on VGA connectors.
