Comment 29 for bug 1686189

@Kai-Heng, if that can help this is my configuration below:
-Dell Latitude E7450 on a Dell docking station with two screens (1 VGA , the other
-Intel® Core™ i7-5600U CPU @ 2.60GHz × 4
-GeForce 840M/PCIe/SSE2

ggalibert@ggalibert-Latitude-E7450:~$ lsmod | grep i915
i915 1208320 3
i2c_algo_bit 16384 1 i915
drm_kms_helper 155648 2 i915,nvidia_drm
drm 364544 6 i915,drm_kms_helper,nvidia_drm
video 40960 3 i915,dell_wmi,dell_laptop

Last working kernel version is 4.4.0-72.