I guess that you don't have the same problem with the intel driver. Am I right?
The installation is pretty recent and it seems that the installer choose to use _modesetting_ in spite of the fact that, as in your case, the intel driver is installed.
However, I have no clue how to change the driver ;-(
~$ apt policy xserver-xorg-video-intel
xserver-xorg-video-intel:
Installed: 2:2.99.917+git20161206-1
Candidate: 2:2.99.917+git20161206-1
System: Host: omega Kernel: 4.10.6-towo.1-siduction-amd64 x86_64 (64 bit) Desktop: KDE Plasma 5.8.6
Distro: siduction 17.1.0 Patience - kde - (201703051755)
Machine: Device: desktop System: ASUS product: All Series
Mobo: ASUSTeK model: SABERTOOTH Z87 v: Rev 1.xx BIOS: American Megatrends v: 1803 date: 02/17/2014
CPU: Quad core Intel Core i5-4670K (-MCP-) cache: 6144 KB
clock speeds: max: 3800 MHz 1: 1498 MHz 2: 1226 MHz 3: 1496 MHz 4: 1501 MHz
Graphics: Card: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller
Display Server: X.Org 1.19.3 drivers: modesetting (unloaded: fbdev,vesa)
Resolution: 1920x1080@60.00hz, 1920x1200@59.95hz
GLX Renderer: Mesa DRI Intel Haswell Desktop GLX Version: 3.0 Mesa 13.0.6
Thanks