DVI-D monitor connected to DVI-I output not detected (regression from kernel 4.14.32 to kernel 4.16.0 using graphic core)

Submitted by Matthias Nagel

Assigned to Default DRI bug account

Link to original bug (#105911)

Description

I have a Radeon R9 380 and three monitors EIZO EV2436W. The graphic card has four monitor output ports: DP, HDMI, DVI-D and DVI-I. Each monitor has a DP and a DVI-D input port. Hence, one monitor is connected via DP, one monitor is connected to the DVI-D port and the third monitor is connected to the DVI-I port.

With kernel 4.14.32 all three monitors work. With kernel 4.16.0 and the new graphic core (aka DAL) architecture the monitor that is connected to the DVI-I port is not detected and stays dark.