Intel VAAPI howto with Leia v18 nightly based on Ubuntu 18.04 server
It made it into the main builds, it's the latest one in Isengard and the latest one in the other builds.

Btw. I can reproduce the "Modes issue", the problem here is, that after starting up the xserver the Heads don't seem to be ready and they only provide the KMS refreshrate. An ugly workaround is putting an xorg.conf to /etc/X11/ or alternatively to /storage/.config/

Here is a working one, you might need to change HDMI1 to HDMI2 in both locations:

Code:
# put me to /etc/X11/xorg.conf or to /storage/.config/xorg.conf
# don't forget to adjust HDMI1 to your output in Screen _and_ in Monitor section
Section "Device"
  Identifier  "Device0"
  Driver      "intel"
  VendorName  "INTEL Corporation"
EndSection

Section "Screen"
  Identifier  "Screen0"
  Device      "Device0"
  # Change me to HDMI2 / DP2 whatever if needed
  Monitor     "HDMI1"
  DefaultDepth  24
  SubSection "Display"
    Depth       24
    Modes     "[email protected]" "[email protected]" "[email protected]" "[email protected]" "[email protected]"
  EndSubSection
EndSection

Section "Monitor"
  # Change me to HDMI2 / DP2 whatever if needed
  Identifier  "HDMI1"
  HorizSync   14.0 - 70.0
  VertRefresh 24.0 - 62.0
  Option "PreferredMode" "[email protected]"
  Modeline    "[email protected]"     74.176 1920 2558 2602 2750 1080 1084 1089 1125 +hsync +vsync
  Modeline    "[email protected]"     74.250 1920 2558 2602 2750 1080 1084 1089 1125 +hsync +vsync
  Modeline    "[email protected]"    148.500 1920 2448 2492 2640 1080 1084 1094 1125 +hsync +vsync
  Modeline    "[email protected]" 148.352 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
  Modeline    "[email protected]"    148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
EndSection

Section "Extensions"
  Option      "Composite"           "Disable"
EndSection
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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Messages In This Thread
RE: New Era: VAAPI with EGL interoperation - by fritsch - 2015-10-30, 08:35
Live TV broken again? - by schamane - 2016-02-29, 19:56
Random crashes - by hal2100 - 2016-03-08, 22:03