The monitor is permanently connected via DisplayPort. If I switch on the laptop and the monitor at the same time, my Linux Mint nicely detects the monitor and uses it just fine.If, however, I boot without the monitor being on, it is not detected after I switch it. Re-plugging the cable does not help, switching the monitor on/off does not help. Restarting the display manager, mdm, does not help either, so it seems to be rather deep in the kernel.If I use old VGA, this switching on late works.Any ideas what the reason could be? Is there a command to re-initiate the detection?
Monitor on DisplayPort not detected if switched on after boot
linux mint;multi monitor;display settings