Rotation working on DL-4300 USB3.0

[Eevey]

Thanks for the information and research, rotation works like a charm here as well, after some fiddling! (Gnome Shell on Antergos/Arch Linux)

I have an Asus MB169B+ that I bought without properly researching whether screen rotation would work on Linux, and was quite shocked to find that it didn't out of the box. I tried a number of variations, based on the experience of the other people in this thread, and found that it didn't really work properly without having all the lines:

Section "Device"
  Identifier  "intel"
  Driver      "modesetting"
  Option      "kmsdev" "/dev/dri/card0"
  Option      "PageFlip" "off"
  Option      "SWCursor" "on"
  Option      "ShadowFB" "true"
EndSection

Section "Device"
  Identifier  "USB3"
  BusID       "USB"
  Driver      "modesetting"
  Option      "kmsdev" "/dev/dri/card1"
  Option      "PageFlip" "off"
  Option      "SWCursor" "on"
  Option      "ShadowFB" "true"
EndSection

On a side-note: the SWCursor option significantly reduces mouse flickering for me, though it's not completely gone.

Also really hope Wayland will be supported soon and screen rotation will just work out of the box there. :-)