Solving Hotplugging Issues with DisplayPort Monitors
Symptom
On IGEL Linux, in a dual view configuration, the following problem occurs: If a monitor connected via DisplayPort is only switched on after booting the device, it will remain black.
Problem
The DisplayPort standard allows for a powered-off monitor to be undetectable by the graphics card.
Solution
The following checks whether a monitor contained in the configuration is missing (i.e. powered off) and makes it usable as soon as it appears (i.e. is powered on):
- If you are using IGEL Linux 5, make sure you are running version 5.10.410 or newer.
If you are using IGEL Linux 10 you do not need to upgrade. - In Setup, go to System > Registry > Parameter >
session.user_display%.options.enhanced_hotplug - Make sure the parameter is set to
true(default).
There is another setting you can use if you do not want IGEL Linux to change the display settings every time a DisplayPort monitor is switched on/off:
- Go to System > Registry > Parameter > s
essions.user_display%.options.disable_hotplug - Set it to DP_Disconnect_Only.